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within Modelica;
package Units "Library of type and unit definitions"
extends Modelica.Icons.Package;
package UsersGuide "User's Guide of Units Library"
extends Modelica.Icons.Information;
class HowToUseUnits "How to use Units"
extends Modelica.Icons.Information;
annotation (DocumentationClass=true, Documentation(info="<html>
<p>
When implementing a Modelica model, every variable needs to
be declared. Physical variables should be declared with a unit.
The basic approach in Modelica is that the unit attribute of
a variable is the <strong>unit</strong> in which the <strong>equations</strong> are <strong>written</strong>,
for example:
</p>
<blockquote><pre>
<strong>model</strong> MassOnGround
<strong>parameter</strong> Real m(quantity=\"Mass\", unit=\"kg\") \"Mass\";
<strong>parameter</strong> Real f(quantity=\"Force\", unit=\"N\") \"Driving force\";
Real s(unit=\"m\") \"Position of mass\";
Real v(unit=\"m/s\") \"Velocity of mass\";
<strong>equation</strong>
<strong>der</strong>(s) = v;
m*<strong>der</strong>(v) = f;
<strong>end</strong> MassOnGround;
</pre></blockquote>
<p>
This means that the equations in the equation section are only correct
for the specified units. A different issue is the user interface, i.e.,
in which unit the variable is presented to the user in graphical
user interfaces, both for input (e.g., parameter menu), as well as
for output (e.g., in the plot window). Preferably, the Modelica tool
should provide a list of units from which the user can select, e.g.,
\"m\", \"cm\", \"km\", \"inch\" for quantity \"Length\". When storing the value in
the model as a Modelica modifier, it has to be converted to the unit defined
in the declaration. Additionally, the unit used in the graphical
user interface has to be stored. In order to have a standardized way
of doing this, Modelica provides the following three attributes
for a variable of type Real:
</p>
<ul>
<li><strong>quantity</strong> to define the physical quantity (e.g., \"Length\", or \"Energy\").</li>
<li><strong>unit</strong> to define the unit that has to be used
in order that the equations are correct (e.g., \"N.m\").</li>
<li><strong>displayUnit</strong> to define the unit used in the graphical
user interface as default display unit for input and/or output.</li>
</ul>
<p>
Note, a unit, such as \"N.m\", is not sufficient to define uniquely the
physical quantity, since, e.g., \"N.m\" might be either \"torque\" or
\"energy\". The \"quantity\" attribute might therefore be used by a tool
to select the corresponding menu from which the user can select
a unit for the corresponding variable.
</p>
<p>
For example, after providing a value for \"m\" and \"f\" in a parameter
menu of an instance of MassOnGround, a tool might generate the following code:
</p>
<blockquote><pre>
MassOnGround myObject(m(displayUnit=\"g\")=2, f=3);
</pre></blockquote>
<p>
The meaning is that in the equations a value of \"2\" is used
and that in the graphical user interface a value of \"2000\" should be used,
together with the unit \"g\" from the unit set \"Mass\" (= the quantity name).
Note, according to the Modelica specification
a tool might ignore the \"displayUnit\" attribute.
</p>
<p>
In order to help the Modelica model developer, the <code>Modelica.Units</code>
library provides about 450 predefined type names,
together with values for the attributes <strong>quantity</strong>, <strong>unit</strong> and sometimes
<strong>displayUnit</strong> and <strong>min</strong>. The unit is always selected as SI-unit according to the
ISO standard. The type and the quantity names are the
quantity names used in the ISO standard. \"quantity\" and \"unit\" are defined
as \"<strong>final</strong>\" in order that they cannot be modified. Attributes \"displayUnit\"
and \"min\" can, however, be changed in a model via a modification. The example above,
might therefore be alternatively also defined as:
</p>
<blockquote><pre>
<strong>model</strong> MassOnGround
<strong>parameter</strong> Modelica.Units.SI.Mass m \"Mass\";
<strong>parameter</strong> Modelica.Units.SI.Force f \"Driving force\";
...
<strong>end</strong> MassOnGround;
</pre></blockquote>
<p>
or in a short hand notation as
</p>
<blockquote><pre>
<strong>model</strong> MassOnGround
<strong>import</strong> Modelica.Units.SI;
<strong>parameter</strong> SI.Mass m \"Mass\";
<strong>parameter</strong> SI.Force f \"Driving force\";
...
<strong>end</strong> MassOnGround;
</pre></blockquote>
<p>
For some often
used Non SI-units (like hour), some additional type definitions are
present as <code>Modelica.Units.NonSI</code>. If this is not sufficient,
the user has to define its own types or use the attributes directly
in the declaration as in the example at the beginning.
</p>
<p>
<strong>Complex units</strong> are also included in <code>Modelica.Units</code>.
A complex unit is declared as:
</p>
<blockquote><pre>
<strong>model</strong> QuasiStaticMachine
<strong>parameter</strong> Modelica.Units.SI.ComplexPower SNominal = Complex(10000,4400)
\"Nominal complex power\";
...
<strong>end</strong> QuasiStaticMachine;
</pre></blockquote>
</html>"));
end HowToUseUnits;
class Conventions "Conventions"
extends Modelica.Icons.Information;
annotation (DocumentationClass=true, Documentation(info="<html>
<p>The following conventions are used in package <code>Modelica.Units.SI</code>:</p>
<ul>
<li>Modelica quantity names are defined according to the recommendations
of ISO 31. Some of these name are rather long, such as
\"ThermodynamicTemperature\". Shorter alias names are defined, e.g.,
\"type Temperature = ThermodynamicTemperature;\".</li>
<li>Modelica units are defined according to the SI base units without
multiples (only exception \"kg\").</li>
<li>For some quantities, more convenient units for an engineer are
defined as \"displayUnit\", i.e., the default unit for display
purposes (e.g., displayUnit=\"deg\" for quantity=\"Angle\").</li>
<li>The type name is identical to the quantity name, following
the convention of type names.</li>
<li>All quantity and unit attributes are defined as final in order
that they cannot be redefined to another value.</li>
<li>Similar quantities, such as \"Length, Breadth, Height, Thickness,
Radius\" are defined as the same quantity (here: \"Length\").</li>
<li>The ordering of the type declarations in this package follows ISO 31:
<blockquote><pre>
Chapter 1: <strong>Space and Time</strong>
Chapter 2: <strong>Periodic and Related Phenomena</strong>
Chapter 3: <strong>Mechanics</strong>
Chapter 4: <strong>Heat</strong>
Chapter 5: <strong>Electricity and Magnetism</strong>
Chapter 6: <strong>Light and Related Electromagnetic Radiations</strong>
Chapter 7: <strong>Acoustics</strong>
Chapter 8: <strong>Physical Chemistry</strong>
Chapter 9: <strong>Atomic and Nuclear Physics</strong>
Chapter 10: <strong>Nuclear Reactions and Ionizing Radiations</strong>
Chapter 11: (not defined in ISO 31-1992)
Chapter 12: <strong>Characteristic Numbers</strong>
Chapter 13: <strong>Solid State Physics</strong>
</pre></blockquote>
</li>
<li>Conversion functions between SI and other units are available in the subpackage
<code>Conversions</code>.</li>
</ul>
</html>"));
end Conventions;
class Literature "Literature"
extends Modelica.Icons.References;
annotation (Documentation(info="<html>
<p> This package is based on the following references
</p>
<dl>
<dt>ISO 31-1992:</dt>
<dd> <strong>General principles concerning
quantities, units and symbols</strong>.<br> </dd>
<dt>ISO 1000-1992:</dt>
<dd> <strong>SI units and recommendations for the use
of their multiples and of certain other units</strong>.<br> </dd>
<dt>Cardarelli F.:</dt>
<dd> <strong>Scientific Unit Conversion - A Practical
Guide to Metrication</strong>. Springer 1997.</dd>
</dl>
</html>"));
end Literature;
class Contact "Contact"
extends Modelica.Icons.Contact;
annotation (Documentation(info="<html>
<h4>Main author</h4>
<p>
<a href=\"http://www.robotic.dlr.de/Martin.Otter/\"><strong>Martin Otter</strong></a><br>
Deutsches Zentrum für Luft- und Raumfahrt (DLR)<br>
Institut für Systemdynamik und Regelungstechnik (SR)<br>
Münchener Straße 20<br>
D-82234 Weßling<br>
Germany<br>
email: <a href=\"mailto:Martin.Otter@dlr.de\">Martin.Otter@dlr.de</a>
</p>
<h4>Acknowledgements</h4>
<p>
Astrid Jaschinski, Hubertus Tummescheit and Christian Schweiger
contributed to the implementation of this package.
</p>
</html>"));
end Contact;
annotation (DocumentationClass=true, Documentation(info="<html>
<p>
Library <strong>Units</strong> is a <strong>free</strong> Modelica package providing
predefined types, such as <em>Mass</em>,
<em>Length</em>, <em>Time</em>.</p>
</html>"));
end UsersGuide;
package SI "Library of SI unit definitions"
extends Modelica.Icons.Package;
// Space and Time (chapter 1 of ISO 31-1992)
type Angle = Real (
final quantity="Angle",
final unit="rad",
displayUnit="deg");
type SolidAngle = Real (final quantity="SolidAngle", final unit="sr");
type Length = Real (final quantity="Length", final unit="m");
type PathLength = Length;
type Position = Length;
type Distance = Length (min=0);
type Breadth = Length(min=0);
type Height = Length(min=0);
type Thickness = Length(min=0);
type Radius = Length(min=0);
type Diameter = Length(min=0);
type Area = Real (final quantity="Area", final unit="m2");
type Volume = Real (final quantity="Volume", final unit="m3");
type Time = Real (final quantity="Time", final unit="s");
type Duration = Time;
type AngularVelocity = Real (
final quantity="AngularVelocity",
final unit="rad/s");
type AngularAcceleration = Real (final quantity="AngularAcceleration", final unit="rad/s2");
type AngularJerk = Real (final quantity="AngularJerk", final unit="rad/s3");
type Velocity = Real (final quantity="Velocity", final unit="m/s");
type Acceleration = Real (final quantity="Acceleration", final unit="m/s2");
type Jerk = Real (final quantity="Jerk", final unit="m/s3");
// Periodic and related phenomens (chapter 2 of ISO 31-1992)
type Period = Real (final quantity="Time", final unit="s");
type Frequency = Real (final quantity="Frequency", final unit="Hz");
type AngularFrequency = Real (final quantity="AngularFrequency", final unit=
"rad/s");
type Wavelength = Real (final quantity="Wavelength", final unit="m");
type WaveNumber = Real (final quantity="WaveNumber", final unit="m-1");
type CircularWaveNumber = Real (final quantity="CircularWaveNumber", final unit=
"rad/m");
type AmplitudeLevelDifference = Real (final quantity=
"AmplitudeLevelDifference", final unit="dB");
type PowerLevelDifference = Real (final quantity="PowerLevelDifference",
final unit="dB");
type DampingCoefficient = Real (final quantity="DampingCoefficient", final unit=
"s-1");
type LogarithmicDecrement = Real (final quantity="LogarithmicDecrement",
final unit="1/S");
type AttenuationCoefficient = Real (final quantity="AttenuationCoefficient",
final unit="m-1");
type PhaseCoefficient = Real (final quantity="PhaseCoefficient", final unit=
"m-1");
type PropagationCoefficient = Real (final quantity="PropagationCoefficient",
final unit="m-1");
// added to ISO-chapter
type Damping = DampingCoefficient;
// Mechanics (chapter 3 of ISO 31-1992)
type Mass = Real (
quantity="Mass",
final unit="kg",
min=0);
type Density = Real (
final quantity="Density",
final unit="kg/m3",
displayUnit="g/cm3",
min=0.0);
type RelativeDensity = Real (
final quantity="RelativeDensity",
final unit="1",
min=0.0);
type SpecificVolume = Real (
final quantity="SpecificVolume",
final unit="m3/kg",
min=0.0);
type LinearDensity = Real (
final quantity="LinearDensity",
final unit="kg/m",
min=0);
type SurfaceDensity = Real (
final quantity="SurfaceDensity",
final unit="kg/m2",
min=0);
type Momentum = Real (final quantity="Momentum", final unit="kg.m/s");
type Impulse = Real (final quantity="Impulse", final unit="N.s");
type AngularMomentum = Real (final quantity="AngularMomentum", final unit=
"kg.m2/s");
type AngularImpulse = Real (final quantity="AngularImpulse", final unit=
"N.m.s");
type MomentOfInertia = Real (final quantity="MomentOfInertia", final unit=
"kg.m2");
type Inertia = MomentOfInertia;
type Force = Real (final quantity="Force", final unit="N");
type TranslationalSpringConstant=Real(final quantity="TranslationalSpringConstant", final unit="N/m");
type TranslationalDampingConstant=Real(final quantity="TranslationalDampingConstant", final unit="N.s/m");
type Weight = Force;
type Torque = Real (final quantity="Torque", final unit="N.m");
type ElectricalTorqueConstant = Real(final quantity="ElectricalTorqueConstant", final unit= "N.m/A");
type MomentOfForce = Torque;
type ImpulseFlowRate = Real (final quantity="ImpulseFlowRate", final unit="N");
type AngularImpulseFlowRate = Real (final quantity="AngularImpulseFlowRate", final unit= "N.m");
type RotationalSpringConstant=Real(final quantity="RotationalSpringConstant", final unit="N.m/rad");
type RotationalDampingConstant=Real(final quantity="RotationalDampingConstant", final unit="N.m.s/rad");
type Pressure = Real (
final quantity="Pressure",
final unit="Pa",
displayUnit="bar");
type AbsolutePressure = Pressure (min=0.0, nominal = 1e5);
type PressureDifference = Pressure;
type PressureSlope = Real (
final quantity="PressureSlope",
final unit="Pa/s",
displayUnit="bar/s");
type BulkModulus = AbsolutePressure;
type Stress = Real (final unit="Pa");
type NormalStress = Stress;
type ShearStress = Stress;
type Strain = Real (final quantity="Strain", final unit="1");
type LinearStrain = Strain;
type ShearStrain = Strain;
type VolumeStrain = Real (final quantity="VolumeStrain", final unit="1");
type PoissonNumber = Real (final quantity="PoissonNumber", final unit="1");
type ModulusOfElasticity = Stress;
type ShearModulus = Stress;
type SecondMomentOfArea = Real (final quantity="SecondMomentOfArea", final unit=
"m4");
type SecondPolarMomentOfArea = SecondMomentOfArea;
type SectionModulus = Real (final quantity="SectionModulus", final unit="m3");
type CoefficientOfFriction = Real (final quantity="CoefficientOfFriction",
final unit="1");
type DynamicViscosity = Real (
final quantity="DynamicViscosity",
final unit="Pa.s",
min=0);
type KinematicViscosity = Real (
final quantity="KinematicViscosity",
final unit="m2/s",
min=0);
type SurfaceTension = Real (final quantity="SurfaceTension", final unit="N/m");
type Work = Real (final quantity="Work", final unit="J");
type Energy = Real (final quantity="Energy", final unit="J");
type EnergyDensity = Real (final quantity="EnergyDensity", final unit="J/m3");
type PotentialEnergy = Energy;
type KineticEnergy = Energy;
type Power = Real (final quantity="Power", final unit="W");
type EnergyFlowRate = Power;
type EnthalpyFlowRate = Real (final quantity="EnthalpyFlowRate", final unit=
"W");
type Efficiency = Real (
final quantity="Efficiency",
final unit="1",
min=0);
type MassFlowRate = Real (quantity="MassFlowRate", final unit="kg/s");
type VolumeFlowRate = Real (final quantity="VolumeFlowRate", final unit=
"m3/s");
// added to ISO-chapter 3
type MomentumFlux = Real (final quantity="MomentumFlux", final unit="N");
type AngularMomentumFlux = Real (final quantity="AngularMomentumFlux", final unit=
"N.m");
// Heat (chapter 4 of ISO 31-1992)
type ThermodynamicTemperature = Real (
final quantity="ThermodynamicTemperature",
final unit="K",
min = 0.0,
start = 288.15,
nominal = 300,
displayUnit="degC")
"Absolute temperature (use type TemperatureDifference for relative temperatures)" annotation(absoluteValue=true);
type Temperature = ThermodynamicTemperature;
type TemperatureDifference = Real (
final quantity="ThermodynamicTemperature",
final unit="K") annotation(absoluteValue=false);
type TemperatureSlope = Real (final quantity="TemperatureSlope",
final unit="K/s");
type LinearTemperatureCoefficient = Real(final quantity = "LinearTemperatureCoefficient", final unit="1/K");
type QuadraticTemperatureCoefficient = Real(final quantity = "QuadraticTemperatureCoefficient", final unit="1/K2");
type LinearExpansionCoefficient = Real (final quantity=
"LinearExpansionCoefficient", final unit="1/K");
type CubicExpansionCoefficient = Real (final quantity=
"CubicExpansionCoefficient", final unit="1/K");
type RelativePressureCoefficient = Real (final quantity=
"RelativePressureCoefficient", final unit="1/K");
type PressureCoefficient = Real (final quantity="PressureCoefficient", final unit=
"Pa/K");
type Compressibility = Real (final quantity="Compressibility", final unit=
"1/Pa");
type IsothermalCompressibility = Compressibility;
type IsentropicCompressibility = Compressibility;
type Heat = Real (final quantity="Energy", final unit="J");
type HeatFlowRate = Real (final quantity="Power", final unit="W");
type HeatFlux = Real (final quantity="HeatFlux", final unit="W/m2");
type DensityOfHeatFlowRate = Real (final quantity="DensityOfHeatFlowRate",
final unit="W/m2");
type ThermalConductivity = Real (final quantity="ThermalConductivity", final unit=
"W/(m.K)");
type CoefficientOfHeatTransfer = Real (final quantity=
"CoefficientOfHeatTransfer", final unit="W/(m2.K)");
type SurfaceCoefficientOfHeatTransfer = CoefficientOfHeatTransfer;
type ThermalInsulance = Real (final quantity="ThermalInsulance", final unit=
"m2.K/W");
type ThermalResistance = Real (final quantity="ThermalResistance", final unit=
"K/W");
type ThermalConductance = Real (final quantity="ThermalConductance", final unit=
"W/K");
type ThermalDiffusivity = Real (final quantity="ThermalDiffusivity", final unit=
"m2/s");
type HeatCapacity = Real (final quantity="HeatCapacity", final unit="J/K");
type SpecificHeatCapacity = Real (final quantity="SpecificHeatCapacity",
final unit="J/(kg.K)");
type SpecificHeatCapacityAtConstantPressure = SpecificHeatCapacity;
type SpecificHeatCapacityAtConstantVolume = SpecificHeatCapacity;
type SpecificHeatCapacityAtSaturation = SpecificHeatCapacity;
type RatioOfSpecificHeatCapacities = Real (final quantity=
"RatioOfSpecificHeatCapacities", final unit="1");
type IsentropicExponent = Real (final quantity="IsentropicExponent", final unit=
"1");
type Entropy = Real (final quantity="Entropy", final unit="J/K");
type EntropyFlowRate = Real (final quantity="EntropyFlowRate", final unit="J/(K.s)");
type SpecificEntropy = Real (final quantity="SpecificEntropy",
final unit="J/(kg.K)");
type InternalEnergy = Heat;
type Enthalpy = Heat;
type HelmholtzFreeEnergy = Heat;
type GibbsFreeEnergy = Heat;
type SpecificEnergy = Real (final quantity="SpecificEnergy",
final unit="J/kg");
type SpecificInternalEnergy = SpecificEnergy;
type SpecificEnthalpy = SpecificEnergy;
type SpecificHelmholtzFreeEnergy = SpecificEnergy;
type SpecificGibbsFreeEnergy = SpecificEnergy;
type MassieuFunction = Real (final quantity="MassieuFunction", final unit=
"J/K");
type PlanckFunction = Real (final quantity="PlanckFunction", final unit="J/K");
// added to ISO-chapter 4
type DerDensityByEnthalpy = Real (final unit="kg.s2/m5");
type DerDensityByPressure = Real (final unit="s2/m2");
type DerDensityByTemperature = Real (final unit="kg/(m3.K)");
type DerEnthalpyByPressure = Real (final unit="J.m.s2/kg2");
type DerEnergyByDensity = Real (final unit="J.m3/kg");
type DerEnergyByPressure = Real (final unit="J.m.s2/kg");
type DerPressureByDensity = Real (final unit="Pa.m3/kg");
type DerPressureByTemperature = Real (final unit="Pa/K");
// Electricity and Magnetism (chapter 5 of ISO 31-1992)
type ElectricCurrent = Real (final quantity="ElectricCurrent", final unit="A");
type Current = ElectricCurrent;
type CurrentSlope = Real(final quantity="CurrentSlope", final unit="A/s");
type ElectricCharge = Real (final quantity="ElectricCharge", final unit="C");
type Charge = ElectricCharge;
type VolumeDensityOfCharge = Real (
final quantity="VolumeDensityOfCharge",
final unit="C/m3",
min=0);
type SurfaceDensityOfCharge = Real (
final quantity="SurfaceDensityOfCharge",
final unit="C/m2",
min=0);
type ElectricFieldStrength = Real (final quantity="ElectricFieldStrength",
final unit="V/m");
type ElectricPotential = Real (final quantity="ElectricPotential", final unit=
"V");
type Voltage = ElectricPotential;
type PotentialDifference = ElectricPotential;
type ElectromotiveForce = ElectricPotential;
type VoltageSecond = Real (final quantity="VoltageSecond", final unit="V.s")
"Voltage second";
type VoltageSlope = Real(final quantity="VoltageSlope", final unit="V/s");
type ElectricFluxDensity = Real (final quantity="ElectricFluxDensity", final unit=
"C/m2");
type ElectricFlux = Real (final quantity="ElectricFlux", final unit="C");
type Capacitance = Real (
final quantity="Capacitance",
final unit="F",
min=0);
type CapacitancePerUnitLength = Real (
final quantity="CapacitancePerUnitLength",
final unit="F/m") "Capacitance per unit length of wire/cable/line";
type CapacitancePerArea =
Real (final quantity="CapacitancePerArea", final unit="F/m2")
"Capacitance per area";
type Permittivity = Real (
final quantity="Permittivity",
final unit="F/m",
min=0);
type PermittivityOfVacuum = Permittivity;
type RelativePermittivity = Real (final quantity="RelativePermittivity",
final unit="1");
type ElectricSusceptibility = Real (final quantity="ElectricSusceptibility",
final unit="1");
type ElectricPolarization = Real (final quantity="ElectricPolarization",
final unit="C/m2");
type Electrization = Real (final quantity="Electrization", final unit="V/m");
type ElectricDipoleMoment = Real (final quantity="ElectricDipoleMoment",
final unit="C.m");
type CurrentDensity = Real (final quantity="CurrentDensity", final unit=
"A/m2");
type LinearCurrentDensity = Real (final quantity="LinearCurrentDensity",
final unit="A/m");
type MagneticFieldStrength = Real (final quantity="MagneticFieldStrength",
final unit="A/m");
type MagneticPotential = Real (final quantity="MagneticPotential", final unit="A");
type MagneticPotentialDifference = Real (final quantity=
"MagneticPotential", final unit="A");
type MagnetomotiveForce = Real (final quantity="MagnetomotiveForce", final unit=
"A");
type CurrentLinkage = Real (final quantity="CurrentLinkage", final unit="A");
type MagneticFluxDensity = Real (final quantity="MagneticFluxDensity", final unit=
"T");
type MagneticFlux = Real (final quantity="MagneticFlux", final unit="Wb");
type MagneticVectorPotential = Real (final quantity="MagneticVectorPotential",
final unit="Wb/m");
type Inductance = Real (
final quantity="Inductance",
final unit="H");
type SelfInductance = Inductance(min=0);
type MutualInductance = Inductance;
type InductancePerUnitLength = Real (
final quantity="InductancePerUnitLength",
final unit="H/m") "Inductance per unit length of wire/cable/line";
type CouplingCoefficient = Real (final quantity="CouplingCoefficient", final unit=
"1");
type LeakageCoefficient = Real (final quantity="LeakageCoefficient", final unit=
"1");
type Permeability = Real (final quantity="Permeability", final unit="V.s/(A.m)");
type PermeabilityOfVacuum = Permeability;
type RelativePermeability = Real (final quantity="RelativePermeability",
final unit="1");
type MagneticSusceptibility = Real (final quantity="MagneticSusceptibility",
final unit="1");
type ElectromagneticMoment = Real (final quantity="ElectromagneticMoment",
final unit="A.m2");
type MagneticDipoleMoment = Real (final quantity="MagneticDipoleMoment",
final unit="Wb.m");
type Magnetization = Real (final quantity="Magnetization", final unit="A/m");
type MagneticPolarization = Real (final quantity="MagneticPolarization",
final unit="T");
type ElectromagneticEnergyDensity = Real (final quantity="EnergyDensity",
final unit="J/m3");
type PoyntingVector = Real (final quantity="PoyntingVector", final unit=
"W/m2");
type Resistance = Real (
final quantity="Resistance",
final unit="Ohm");
type ResistancePerUnitLength = Real (
final quantity="ResistancePerUnitLength",
final unit="Ohm/m") "Resistance per unit length of wire/cable/line";
type Resistivity = Real (final quantity="Resistivity", final unit="Ohm.m");
type Conductivity = Real (final quantity="Conductivity", final unit="S/m");
type Reluctance = Real (final quantity="Reluctance", final unit="H-1");
type Permeance = Real (final quantity="Permeance", final unit="H");
type PhaseDifference = Real (
final quantity="Angle",
final unit="rad",
displayUnit="deg");
type Impedance = Resistance;
type ImpedancePerUnitLength = ResistancePerUnitLength "Impedance per unit length of wire/cable/line";
type ModulusOfImpedance = Resistance;
type Reactance = Resistance;
type ReactancePerUnitLength = ResistancePerUnitLength "Reactance per unit length of wire/cable/line";
type QualityFactor = Real (final quantity="QualityFactor", final unit="1");
type LossAngle = Real (
final quantity="Angle",
final unit="rad",
displayUnit="deg");
type Conductance = Real (
final quantity="Conductance",
final unit="S");
type ConductancePerUnitLength = Real (
final quantity="ConductancePerUnitLength",
final unit="S/m") "Conductance per unit length of wire/cable/line";
type Admittance = Conductance;
type AdmittancePerUnitLength = ConductancePerUnitLength "Admittance per unit length of wire/cable/line";
type ModulusOfAdmittance = Conductance;
type Susceptance = Conductance;
type SusceptancePerUnitLength = ConductancePerUnitLength "Susceptance per unit length of wire/cable/line";
type InstantaneousPower = Real (final quantity="Power", final unit="W");
type ActivePower = Real (final quantity="Power", final unit="W");
type ApparentPower = Real (final quantity="Power", final unit="V.A");
type ReactivePower = Real (final quantity="Power", final unit="var");
type PowerFactor = Real (final quantity="PowerFactor", final unit="1");
type LinearTemperatureCoefficientResistance = Real (
final quantity="LinearTemperatureCoefficientResistance",
final unit="Ohm/K") "First order temperature coefficient";
type QuadraticTemperatureCoefficientResistance = Real (
final quantity="QuadraticTemperatureCoefficientResistance",
final unit="Ohm/K2") "Second order temperature coefficient";
// added to ISO-chapter 5
type Transconductance = Real (final quantity="Transconductance", final unit=
"A/V2");
type InversePotential = Real (final quantity="InversePotential", final unit=
"1/V");
type ElectricalForceConstant = Real (
final quantity="ElectricalForceConstant",
final unit = "N/A");
// Light and Related Electromagnetic Radiations (chapter 6 of ISO 31-1992)
type RadiantEnergy = Real (final quantity="Energy", final unit="J");
type RadiantEnergyDensity = Real (final quantity="EnergyDensity", final unit=
"J/m3");
type SpectralRadiantEnergyDensity = Real (final quantity=
"SpectralRadiantEnergyDensity", final unit="J/m4");
type RadiantPower = Real (final quantity="Power", final unit="W");
type RadiantEnergyFluenceRate = Real (final quantity=
"RadiantEnergyFluenceRate", final unit="W/m2");
type RadiantIntensity = Real (final quantity="RadiantIntensity", final unit=
"W/sr");
type Radiance = Real (final quantity="Radiance", final unit="W/(sr.m2)");
type RadiantExitance = Real (final quantity="RadiantExitance", final unit=
"W/m2");
type Irradiance = Real (final quantity="Irradiance", final unit="W/m2");
type Emissivity = Real (final quantity="Emissivity", final unit="1");
type SpectralEmissivity = Real (final quantity="SpectralEmissivity", final unit=
"1");
type DirectionalSpectralEmissivity = Real (final quantity=
"DirectionalSpectralEmissivity", final unit="1");
type LuminousIntensity = Real (final quantity="LuminousIntensity", final unit=
"cd");
type LuminousFlux = Real (final quantity="LuminousFlux", final unit="lm");
type QuantityOfLight = Real (final quantity="QuantityOfLight", final unit=
"lm.s");
type Luminance = Real (final quantity="Luminance", final unit="cd/m2");
type LuminousExitance = Real (final quantity="LuminousExitance", final unit=
"lm/m2");
type Illuminance = Real (final quantity="Illuminance", final unit="lx");
type LightExposure = Real (final quantity="LightExposure", final unit="lx.s");
type LuminousEfficacy = Real (final quantity="LuminousEfficacy", final unit=
"lm/W");
type SpectralLuminousEfficacy = Real (final quantity=
"SpectralLuminousEfficacy", final unit="lm/W");
type LuminousEfficiency = Real (final quantity="LuminousEfficiency", final unit=
"1");
type SpectralLuminousEfficiency = Real (final quantity=
"SpectralLuminousEfficiency", final unit="1");
type CIESpectralTristimulusValues = Real (final quantity=
"CIESpectralTristimulusValues", final unit="1");
type ChromaticityCoordinates = Real (final quantity="CromaticityCoordinates",
final unit="1");
type SpectralAbsorptionFactor = Real (final quantity=
"SpectralAbsorptionFactor", final unit="1");
type SpectralReflectionFactor = Real (final quantity=
"SpectralReflectionFactor", final unit="1");
type SpectralTransmissionFactor = Real (final quantity=
"SpectralTransmissionFactor", final unit="1");
type SpectralRadianceFactor = Real (final quantity="SpectralRadianceFactor",
final unit="1");
type LinearAttenuationCoefficient = Real (final quantity=
"AttenuationCoefficient", final unit="m-1");
type LinearAbsorptionCoefficient = Real (final quantity=
"LinearAbsorptionCoefficient", final unit="m-1");
type MolarAbsorptionCoefficient = Real (final quantity=
"MolarAbsorptionCoefficient", final unit="m2/mol");
type RefractiveIndex = Real (final quantity="RefractiveIndex", final unit="1");
// Acoustics (chapter 7 of ISO 31-1992)
type StaticPressure = AbsolutePressure;
type SoundPressure = StaticPressure;
type SoundParticleDisplacement = Real (final quantity="Length", final unit=
"m");
type SoundParticleVelocity = Real (final quantity="Velocity", final unit=
"m/s");
type SoundParticleAcceleration = Real (final quantity="Acceleration", final unit=
"m/s2");
type VelocityOfSound = Real (final quantity="Velocity", final unit="m/s");
type SoundEnergyDensity = Real (final quantity="EnergyDensity", final unit=
"J/m3");
type SoundPower = Real (final quantity="Power", final unit="W");
type SoundIntensity = Real (final quantity="SoundIntensity", final unit=
"W/m2");
type AcousticImpedance = Real (final quantity="AcousticImpedance", final unit=
"Pa.s/m3");
type SpecificAcousticImpedance = Real (final quantity=
"SpecificAcousticImpedance", final unit="Pa.s/m");
type MechanicalImpedance = Real (final quantity="MechanicalImpedance", final unit=
"N.s/m");
type SoundPressureLevel = Real (final quantity="SoundPressureLevel", final unit=
"dB");
type SoundPowerLevel = Real (final quantity="SoundPowerLevel", final unit=
"dB");
type DissipationCoefficient = Real (final quantity="DissipationCoefficient",
final unit="1");
type ReflectionCoefficient = Real (final quantity="ReflectionCoefficient",
final unit="1");
type TransmissionCoefficient = Real (final quantity="TransmissionCoefficient",
final unit="1");
type AcousticAbsorptionCoefficient = Real (final quantity=
"AcousticAbsorptionCoefficient", final unit="1");
type SoundReductionIndex = Real (final quantity="SoundReductionIndex", final unit="dB");
type EquivalentAbsorptionArea = Real (final quantity="Area", final unit="m2");
type ReverberationTime = Real (final quantity="Time", final unit="s");
type LoudnessLevel = Real (final quantity="LoudnessLevel", final unit="phon");
type Loudness = Real (final quantity="Loudness", final unit="sone");
// Physical chemistry and molecular physics (chapter 8 of ISO 31-1992)
type RelativeAtomicMass = Real (final quantity="RelativeAtomicMass", final unit="1");
type RelativeMolecularMass = Real (final quantity="RelativeMolecularMass",
final unit="1");
type NumberOfMolecules = Real (final quantity="NumberOfMolecules", final unit="1");
type AmountOfSubstance = Real (
final quantity="AmountOfSubstance",
final unit="mol",
min=0);
type Molality = Real (final quantity="Molality", final unit="mol/kg");
type MolalConcentration = Molality;
type MolarMass = Real (final quantity="MolarMass", final unit="kg/mol", min=0);
type MolarVolume = Real (final quantity="MolarVolume", final unit="m3/mol", min=0);
type MolarDensity = Real (final quantity="MolarDensity", unit="mol/m3");
type Molarity = MolarDensity;
type MolarConcentration = MolarDensity;
type MolarEnergy = Real (final quantity="MolarEnergy", final unit="J/mol", nominal=2e4);
type MolarInternalEnergy = MolarEnergy;
type MolarHeatCapacity = Real (final quantity="MolarHeatCapacity", final unit="J/(mol.K)");
type MolarEntropy = Real (final quantity="MolarEntropy", final unit="J/(mol.K)");
type MolarEnthalpy = MolarEnergy;
type MolarFlowRate = Real (final quantity="MolarFlowRate", final unit="mol/s");
type NumberDensityOfMolecules = Real (final quantity=
"NumberDensityOfMolecules", final unit="m-3");
type MolecularConcentration = Real (final quantity="MolecularConcentration",
final unit="m-3");
type MassConcentration = Real (final quantity="MassConcentration", final unit=
"kg/m3");
type MassFraction = Real (final quantity="MassFraction", final unit="1",
min=0, max=1);
type Concentration = Real (final quantity="Concentration", final unit=
"mol/m3");
type VolumeFraction = Real (final quantity="VolumeFraction", final unit="1");
type MoleFraction = Real (final quantity="MoleFraction", final unit="1",
min = 0, max = 1);
type ChemicalPotential = Real (final quantity="ChemicalPotential", final unit=
"J/mol");
type AbsoluteActivity = Real (final quantity="AbsoluteActivity", final unit=
"1");
type PartialPressure = AbsolutePressure;
type Fugacity = Real (final quantity="Fugacity", final unit="Pa");
type StandardAbsoluteActivity = Real (final quantity=
"StandardAbsoluteActivity", final unit="1");
type ActivityCoefficient = Real (final quantity="ActivityCoefficient", final unit=
"1");
type ActivityOfSolute = Real (final quantity="ActivityOfSolute", final unit=
"1");
type ActivityCoefficientOfSolute = Real (final quantity=
"ActivityCoefficientOfSolute", final unit="1");
type StandardAbsoluteActivityOfSolute = Real (final quantity=
"StandardAbsoluteActivityOfSolute", final unit="1");
type ActivityOfSolvent = Real (final quantity="ActivityOfSolvent", final unit=
"1");
type OsmoticCoefficientOfSolvent = Real (final quantity=
"OsmoticCoefficientOfSolvent", final unit="1");
type StandardAbsoluteActivityOfSolvent = Real (final quantity=
"StandardAbsoluteActivityOfSolvent", final unit="1");
type OsmoticPressure = Real (
final quantity="Pressure",
final unit="Pa",
displayUnit="bar",
min=0);
type StoichiometricNumber = Real (final quantity="StoichiometricNumber",
final unit="1");
type Affinity = Real (final quantity="Affinity", final unit="J/mol");
type MassOfMolecule = Real (final quantity="Mass", final unit="kg");
type ElectricDipoleMomentOfMolecule = Real (final quantity=
"ElectricDipoleMomentOfMolecule", final unit="C.m");
type ElectricPolarizabilityOfAMolecule = Real (final quantity=
"ElectricPolarizabilityOfAMolecule", final unit="C.m2/V");
type MicrocanonicalPartitionFunction = Real (final quantity=
"MicrocanonicalPartitionFunction", final unit="1");
type CanonicalPartitionFunction = Real (final quantity=
"CanonicalPartitionFunction", final unit="1");
type GrandCanonicalPartitionFunction = Real (final quantity=
"GrandCanonicalPartitionFunction", final unit="1");
type MolecularPartitionFunction = Real (final quantity=
"MolecularPartitionFunction", final unit="1");
type StatisticalWeight = Real (final quantity="StatisticalWeight", final unit=
"1");
type MeanFreePath = Length;
type DiffusionCoefficient = Real (final quantity="DiffusionCoefficient",
final unit="m2/s");
type ThermalDiffusionRatio = Real (final quantity="ThermalDiffusionRatio",
final unit="1");
type ThermalDiffusionFactor = Real (final quantity="ThermalDiffusionFactor",
final unit="1");
type ThermalDiffusionCoefficient = Real (final quantity=
"ThermalDiffusionCoefficient", final unit="m2/s");
type ElementaryCharge = Real (final quantity="ElementaryCharge", final unit=
"C");
type ChargeNumberOfIon = Real (final quantity="ChargeNumberOfIon", final unit=
"1");
type FaradayConstant = Real (final quantity="FaradayConstant", final unit=
"C/mol");
type IonicStrength = Molality;
type DegreeOfDissociation = Real (final quantity="DegreeOfDissociation",
final unit="1");
type ElectrolyticConductivity = Real (final quantity=
"ElectrolyticConductivity", final unit="S/m");
type MolarConductivity = Real (final quantity="MolarConductivity", final unit=
"S.m2/mol");
type TransportNumberOfIonic = Real (final quantity="TransportNumberOfIonic",
final unit="1");
// Atomic and Nuclear Physics (chapter 9 of ISO 31-1992)
type ProtonNumber = Real (final quantity="ProtonNumber", final unit="1");
type NeutronNumber = Real (final quantity="NeutronNumber", final unit="1");
type NucleonNumber = Real (final quantity="NucleonNumber", final unit="1");
type AtomicMassConstant = Real (final quantity="Mass", final unit="kg");
type MassOfElectron = Real (final quantity="Mass", final unit="kg");
type MassOfProton = Real (final quantity="Mass", final unit="kg");
type MassOfNeutron = Real (final quantity="Mass", final unit="kg");
type HartreeEnergy = Real (final quantity="Energy", final unit="J");
type MagneticMomentOfParticle = Real (final quantity=
"MagneticMomentOfParticle", final unit="A.m2");
type BohrMagneton = MagneticMomentOfParticle;
type NuclearMagneton = MagneticMomentOfParticle;
type GyromagneticCoefficient = Real (final quantity="GyromagneticCoefficient",
final unit="A.m2/(J.s)");
type GFactorOfAtom = Real (final quantity="GFactorOfAtom", final unit="1");
type GFactorOfNucleus = Real (final quantity="GFactorOfNucleus", final unit=
"1");
type LarmorAngularFrequency = Real (final quantity="AngularFrequency", final unit=
"s-1");
type NuclearPrecessionAngularFrequency = Real (final quantity=
"AngularFrequency", final unit="s-1");
type CyclotronAngularFrequency = Real (final quantity="AngularFrequency",
final unit="s-1");
type NuclearQuadrupoleMoment = Real (final quantity="NuclearQuadrupoleMoment",
final unit="m2");
type NuclearRadius = Real (final quantity="Length", final unit="m");
type ElectronRadius = Real (final quantity="Length", final unit="m");
type ComptonWavelength = Real (final quantity="Length", final unit="m");
type MassExcess = Real (final quantity="Mass", final unit="kg");
type MassDefect = Real (final quantity="Mass", final unit="kg");
type RelativeMassExcess = Real (final quantity="RelativeMassExcess", final unit=
"1");
type RelativeMassDefect = Real (final quantity="RelativeMassDefect", final unit=
"1");
type PackingFraction = Real (final quantity="PackingFraction", final unit="1");
type BindingFraction = Real (final quantity="BindingFraction", final unit="1");
type MeanLife = Real (final quantity="Time", final unit="s");
type LevelWidth = Real (final quantity="LevelWidth", final unit="J");
type Activity = Real (final quantity="Activity", final unit="Bq");
type SpecificActivity = Real (final quantity="SpecificActivity", final unit=
"Bq/kg");
type DecayConstant = Real (final quantity="DecayConstant", final unit="s-1");
type HalfLife = Real (final quantity="Time", final unit="s");
type AlphaDisintegrationEnergy = Real (final quantity="Energy", final unit=
"J");
type MaximumBetaParticleEnergy = Real (final quantity="Energy", final unit=
"J");
type BetaDisintegrationEnergy = Real (final quantity="Energy", final unit="J");
// Nuclear Reactions and Ionizing Radiations (chapter 10 of ISO 31-1992)
type ReactionEnergy = Real (final quantity="Energy", final unit="J");
type ResonanceEnergy = Real (final quantity="Energy", final unit="J");
type CrossSection = Real (final quantity="Area", final unit="m2");
type TotalCrossSection = Real (final quantity="Area", final unit="m2");
type AngularCrossSection = Real (final quantity="AngularCrossSection", final unit=
"m2/sr");
type SpectralCrossSection = Real (final quantity="SpectralCrossSection",
final unit="m2/J");
type SpectralAngularCrossSection = Real (final quantity=
"SpectralAngularCrossSection", final unit="m2/(sr.J)");
type MacroscopicCrossSection = Real (final quantity="MacroscopicCrossSection",
final unit="m-1");
type TotalMacroscopicCrossSection = Real (final quantity=
"TotalMacroscopicCrossSection", final unit="m-1");
type ParticleFluence = Real (final quantity="ParticleFluence", final unit=
"m-2");
type ParticleFluenceRate = Real (final quantity="ParticleFluenceRate", final unit=
"s-1.m2");
type EnergyFluence = Real (final quantity="EnergyFluence", final unit="J/m2");
type EnergyFluenceRate = Real (final quantity="EnergyFluenceRate", final unit=
"W/m2");
type CurrentDensityOfParticles = Real (final quantity=
"CurrentDensityOfParticles", final unit="m-2.s-1");
type MassAttenuationCoefficient = Real (final quantity=
"MassAttenuationCoefficient", final unit="m2/kg");
type MolarAttenuationCoefficient = Real (final quantity=
"MolarAttenuationCoefficient", final unit="m2/mol");
type AtomicAttenuationCoefficient = Real (final quantity=
"AtomicAttenuationCoefficient", final unit="m2");
type HalfThickness = Real (final quantity="Length", final unit="m");
type TotalLinearStoppingPower = Real (final quantity=
"TotalLinearStoppingPower", final unit="J/m");
type TotalAtomicStoppingPower = Real (final quantity=
"TotalAtomicStoppingPower", final unit="J.m2");
type TotalMassStoppingPower = Real (final quantity="TotalMassStoppingPower",
final unit="J.m2/kg");
type MeanLinearRange = Real (final quantity="Length", final unit="m");
type MeanMassRange = Real (final quantity="MeanMassRange", final unit="kg/m2");
type LinearIonization = Real (final quantity="LinearIonization", final unit=
"m-1");
type TotalIonization = Real (final quantity="TotalIonization", final unit="1");
type Mobility = Real (final quantity="Mobility", final unit="m2/(V.s)");
type IonNumberDensity = Real (final quantity="IonNumberDensity", final unit=
"m-3");
type RecombinationCoefficient = Real (final quantity=
"RecombinationCoefficient", final unit="m3/s");
type NeutronNumberDensity = Real (final quantity="NeutronNumberDensity",
final unit="m-3");
type NeutronSpeed = Real (final quantity="Velocity", final unit="m/s");
type NeutronFluenceRate = Real (final quantity="NeutronFluenceRate", final unit=
"s-1.m-2");
type TotalNeutronSourceDensity = Real (final quantity=
"TotalNeutronSourceDensity", final unit="s-1.m-3");
type SlowingDownDensity = Real (final quantity="SlowingDownDensity", final unit=
"s-1.m-3");
type ResonanceEscapeProbability = Real (final quantity=
"ResonanceEscapeProbability", final unit="1");
type Lethargy = Real (final quantity="Lethargy", final unit="1");
type SlowingDownArea = Real (final quantity="Area", final unit="m2");
type DiffusionArea = Real (final quantity="Area", final unit="m2");
type MigrationArea = Real (final quantity="Area", final unit="m2");
type SlowingDownLength = Real (final quantity="SLength", final unit="m");
type DiffusionLength = Length;
type MigrationLength = Length;
type NeutronYieldPerFission = Real (final quantity="NeutronYieldPerFission",
final unit="1");
type NeutronYieldPerAbsorption = Real (final quantity=
"NeutronYieldPerAbsorption", final unit="1");
type FastFissionFactor = Real (final quantity="FastFissionFactor", final unit=
"1");
type ThermalUtilizationFactor = Real (final quantity=
"ThermalUtilizationFactor", final unit="1");
type NonLeakageProbability = Real (final quantity="NonLeakageProbability",
final unit="1");
type Reactivity = Real (final quantity="Reactivity", final unit="1");
type ReactorTimeConstant = Real (final quantity="Time", final unit="s");
type EnergyImparted = Real (final quantity="Energy", final unit="J");
type MeanEnergyImparted = Real (final quantity="Energy", final unit="J");
type SpecificEnergyImparted = Real (final quantity="SpecificEnergy", final unit=
"Gy");
type AbsorbedDose = Real (final quantity="AbsorbedDose", final unit="Gy");
type DoseEquivalent = Real (final quantity="DoseEquivalent", final unit="Sv");
type AbsorbedDoseRate = Real (final quantity="AbsorbedDoseRate", final unit=
"Gy/s");
type LinearEnergyTransfer = Real (final quantity="LinearEnergyTransfer",
final unit="J/m");
type Kerma = Real (final quantity="Kerma", final unit="Gy");
type KermaRate = Real (final quantity="KermaRate", final unit="Gy/s");
type MassEnergyTransferCoefficient = Real (final quantity=
"MassEnergyTransferCoefficient", final unit="m2/kg");
type Exposure = Real (final quantity="Exposure", final unit="C/kg");
type ExposureRate = Real (final quantity="ExposureRate", final unit=
"C/(kg.s)");
// chapter 11 is not defined in ISO 31-1992
// Characteristic Numbers (chapter 12 of ISO 31-1992)
type ReynoldsNumber = Real (final quantity="ReynoldsNumber", final unit="1");
type EulerNumber = Real (final quantity="EulerNumber", final unit="1");
type FroudeNumber = Real (final quantity="FroudeNumber", final unit="1");
type GrashofNumber = Real (final quantity="GrashofNumber", final unit="1");
type WeberNumber = Real (final quantity="WeberNumber", final unit="1");
type MachNumber = Real (final quantity="MachNumber", final unit="1");
type KnudsenNumber = Real (final quantity="KnudsenNumber", final unit="1");
type StrouhalNumber = Real (final quantity="StrouhalNumber", final unit="1");
type FourierNumber = Real (final quantity="FourierNumber", final unit="1");
type PecletNumber = Real (final quantity="PecletNumber", final unit="1");
type RayleighNumber = Real (final quantity="RayleighNumber", final unit="1");
type NusseltNumber = Real (final quantity="NusseltNumber", final unit="1");
type BiotNumber = NusseltNumber;
// The Biot number (Bi) is used when
// the Nusselt number is reserved
// for convective transport of heat.
type StantonNumber = Real (final quantity="StantonNumber", final unit="1");
type FourierNumberOfMassTransfer = Real (final quantity=
"FourierNumberOfMassTransfer", final unit="1");
type PecletNumberOfMassTransfer = Real (final quantity=
"PecletNumberOfMassTransfer", final unit="1");
type GrashofNumberOfMassTransfer = Real (final quantity=
"GrashofNumberOfMassTransfer", final unit="1");
type NusseltNumberOfMassTransfer = Real (final quantity=
"NusseltNumberOfMassTransfer", final unit="1");
type StantonNumberOfMassTransfer = Real (final quantity=
"StantonNumberOfMassTransfer", final unit="1");