v10.2.11

What's new in this release

• orthogonal layout for the flowsheet
• external unit operations added through FlowsheetBase take their preferred block size
• Pump SetPropertyValue writes displacement, volumetric efficiency and relief pressure
• Pump property units and missing XML summaries
• Pump Power and EnergyStream modes put the whole shaft power into the outlet enthalpy
• PumpBuilder.WithOutletPressure keeps PositiveDisplacement mode
• Information Carrier copies its value; the solver iterates Energy Recycle loops
• ConnectProductEnergyStream connects the unit's outlet port, not the energy stream's inlet
• Riazi C/H ratio uses SG^-6.798
• bioprocess outlets keep their temperature when they hold a single compound
• ADM1 digester applies dry mole fractions to the dry biogas flow
• polymerization moments count termination as the radical balance does (Rt = 2 kt mu0^2)
• filter Simulation mode inverts the Design equation with the right sign
• pretreatment acetic acid comes from the hemicellulose acetyl groups; reactions without a product compound do not run
• CFB pyrolysis requires the product compounds and reports the duty from the riser energy balance
• FluentAPI gives each registered compound a unique ID (pseudo-components shared ID 0 and one cached set of properties)
• water electrolyzer takes the vaporization of the saturated water leaving with the hydrogen out of the waste heat
• hydroelectric turbine draws its power from the head, not the water enthalpy; standard gravity; head report units
• PEM fuel cell reads the cathode pressure from the cathode inlet and passes inerts from both inlets
• flowsheet unit operation sets the defined flow of the child inlet it writes
• CFB pyrolysis runs the reduced CRECK-2014 scheme with a solids slip factor
• Reaktoro Gibbs reactor defaults to supcrtbl; property package maps water to H2O(aq)
• bioreactor Continuous mode solves the steady-state CSTR
• CAPE-OPEN hosted units: outlet enthalpy, energy port and array parameters
• MPC controller runs Dynamic Matrix Control
• ADM1 biogas normal volume counts the headspace pressure
• hydronium formation properties in the electrolyte database
• activity coefficient packages default to experimental liquid Cp enthalpies
• MPC controller saves its variables and step-response models
• PID controller integrates over the control calculation interval
• recycle relative mass flow tolerance
• orifice plate beta follows the diameters; slip two-phase model
• tank lists the residence time as read-only; component separator checks the second outlet flow
• FluentAPI ports for external units; builders write the inputs the units read
• FluentAPI builders for logical blocks, controllers and separators
• writable inputs follow the calculation mode
• wind turbine converts its user-defined weather inputs to SI; electrolyzer efficiency documented as a fraction
• small property and model defects
• full solves honor each spec's own calculation mode
• information carrier modes, save/load and properties; spec expression as text
• relief valve steady-state API 520 rating and sizing
• PEM fuel cell without Python; DWSIM reuses a host Python runtime
• spreadsheet unit operation calculates without Excel
• shortcut column report shows the reboiler pressure and labels V as vapor; expander registers Rated Speed
• crystallizer vapor outlet for the evaporated solvent
• PFR reaction extents and rates in mol/s; reaction heat scaled by the base compound coefficient
• CSTR extents, reaction heat and vapor-phase reactions
• PID series form, derivative setpoint weight and feedforward lead time
• energy streams connect to the energy connector of external unit operations
• biogas upgrader target purity, N2 removal and ISO 6976 Wobbe index
• severity model for pretreatment, Sigma theory for the centrifuge, chromatography chemistry defaults
• PID derivative on PV sign, finite output at Kp = 0, feedforward state reset
• BioReactor and AnaerobicDigester write the heat removed to the energy connector stream
• mojibake in bioprocess unit operations, pump, vessel and rigorous column
• PID feedforward acts on the disturbance deviation from its first reading
• chromatography recovery grids show the value Calculate uses; chemistry defaults tracked
• XML serializer writes doubles in round-trip format
• a saved energy link to an inactive energy connector is skipped with a warning on load
• MPC measured disturbances as feedforward in the prediction
• automation assembly resolver searches the avalonia folder only on .NET 5+
• CloneJSON returns the XML-serialization copy
• compound elements read the charge of ionic formulas
• compound elements of hydrates and double salts
• compound elements of formulas with parenthesized groups
• compound elements recomputed from the formula on load; Gibbs element matrix follows
• electrolyte database gains bischofite, MgCl2.4H2O, epsomite, hexahydrite, kieserite and carnallite
• column top and bottom pressure writes update the whole stage profile
• mark dynamics-only properties in the steady-state property pickers
• electrolyte liquid density counts molecular solutes and ion volumes
• Avalonia property pickers show translated names; RemoveDynamicProperty removes the unit type
• electrolyte database gains glauberite, polyhalite, bloedite and kainite
• PC-SAFT temperature-dependent kij and editor for derived packages
• PC-SAFT association chemical potential with two or more associating compounds
• PC-SAFT cross-association between donor and acceptor sites only
• PC-SAFT density root choice among mechanically stable roots
• PC-SAFT association term for a single associating compound on its own
• pcsaft.dat drops a methyl-n-propylether row carrying the methyl formate CAS
• PC-SAFT diameter caches safe for the parallel temperature evaluations
• serialize the CAPE-OPEN socket and put the stream back after each call
• PR78/SRK Advanced evaluate kij(T, P) at the temperature and pressure of the current call
• Seawater library publishes its coefficient tables and iteration controls only once filled
• CAPE-OPEN 1.1 enthalpy and entropy follow the T, P and composition of the call
• CAPE-OPEN ISOL properties are computed on a copy and returned
• PR78/SRK Advanced inherited entries evaluate kij at the T and P of their own call
• shared EOS helpers read kij at the T and P of their own call
• PR78/SRK Advanced analytical T-derivatives include d(kij)/dT
• open web panels in the system browser on Linux without WebKitGTK 4.0 (#92)
• PRSV2-VL and PRSV2-M read each binary pair in both directions (#93)
• ship the assistant launcher's missing dependencies in extenders/
• reference DWSIM.Automation and DWSIM.Automation.FluentAPI from the Avalonia app
• PRSV2 interaction parameters survive cloning, saving and reloading
• PC-SAFT hot paths typed, no late-bound calls
• PC-SAFT keeps the association strength and energy of each compound through save and load
• PC-SAFT tells an associating compound by its association matrices
• Avalonia PC-SAFT editor takes the association volume and energy and kij_T
• NestedLoops PT flash with an effectively non-volatile compound reaches equilibrium
• a new absorption column starts on the sum-rates solver; Avalonia editor shows the solver that runs (#94)
• single-compound PH and PS flashes find a liquid below 0.3 Tsat
• compound flows set by mass and by moles on one stream keep each other
• Chao-Seader and Grayson-Streed liquid activity coefficients use the solubility parameter in the model's units
• steam tables pressure units in Cp_ISOL, bubble and dew pressure and the saturation checks
• PR78 CalcZ and CalcZ2 keep only valid roots above B, as PR does
• Lee-Kesler-Plocker interaction table rows and reverse-order lookup
• stream PT flash raises when its phases do not add up to the feed
• electrolyte freezing point depression sign
• qualify the Reaktoro type in Automation with global::
• Lee-Kesler-Plocker hydrogen solubility
• Lee-Kesler-Plocker estimates kij for light gas and heavy hydrocarbon pairs missing from the table
• external unit operation graphics find their owner when its description changed
• polymerization reactor keeps the polymer's specific heat capacity and closes the mass balance without rescaling
• polymer cuts and copolymers get their own compound ID; the compound editor keeps a polymer's specific heat capacity when its molar weight changes
• lock object positions and the flowsheet layout; Edit Appearance window built from shared descriptors
• separator writes the heat balance to its energy stream when T or P is overridden
• Nested Loops ignores NaN Rachford-Rice terms of compounds absent from the feed
• Avalonia pipe editor edits the hydraulic and thermal profiles
• pipe Fixed Delta-P fitting, PVC+PRFV material and standard pipe sizes
• Avalonia editors show results as Property | Value | Unit tables

System requirements

Desktop application (self-contained, no .NET runtime installation required):

• Windows 10 or later (x64 or ARM64)
• Linux, a recent 64-bit distribution such as Ubuntu 22.04 or later (x64 or ARM64)
• macOS 12 or later (Intel or Apple Silicon)
• 4 GB RAM recommended, about 1 GB of free disk space
• No dedicated GPU required

Headless MCP server (.deb): Debian or Ubuntu (x64 or ARM64), no graphical environment required.

Downloads

File	Platform
DWSIM-10.2.11-arm64.dmg	macOS (Apple Silicon) - disk image
DWSIM-10.2.11-win-arm64-setup.exe	Windows ARM64 - installer
DWSIM-10.2.11-win-x64-setup.exe	Windows x64 - installer
DWSIM-10.2.11-x64.dmg	macOS (Intel) - disk image
dwsim-10.2.11-linux-arm64.tar.gz	Linux ARM64 - portable (tar.gz)
dwsim-10.2.11-linux-x64.tar.gz	Linux x64 - portable (tar.gz)
dwsim-10.2.11-osx-arm64.tar.gz	macOS (Apple Silicon) - portable (tar.gz)
dwsim-10.2.11-osx-x64.tar.gz	macOS (Intel) - portable (tar.gz)
dwsim-10.2.11-win-arm64.zip	Windows ARM64 - portable (zip)
dwsim-10.2.11-win-x64.zip	Windows x64 - portable (zip)
dwsim-mcp_10.2.11_amd64.deb	MCP server (headless) - Linux x64, Debian/Ubuntu
dwsim-mcp_10.2.11_arm64.deb	MCP server (headless) - Linux ARM64, Debian/Ubuntu
dwsim_10.2.11_amd64.deb	Linux x64 - Debian/Ubuntu package
dwsim_10.2.11_arm64.deb	Linux ARM64 - Debian/Ubuntu package

Full Changelog: v10.2.10...v10.2.11