default value for heads and massFlowRates in Movers.FlowControlled_{dp, m_flow}

[mwetter]

The model Fluid/Movers/FlowControlled_m_flow.mo implements

parameter Modelica.SIunits.MassFlowRate[:] massFlowRates = m_flow_nominal*{0}

and Fluid/Movers/FlowControlled_dp.mo implements

parameter Modelica.SIunits.PressureDifference[:] heads(
     each min=0,
     each displayUnit="Pa") = dp_nominal*{1}

If a user instantiates a model FlowControlled_m_flow without overwriting the default, the pump/fan will never run. Also, if the pump/fan is used with peformance data that define multiple speeds, then the number of speeds is different from the number of stages, which is inconsistent.

I therefore suggest to set as the default, based on affinity laws,

  parameter Modelica.SIunits.MassFlowRate[:] massFlowRates=
    m_flow_nominal*{speeds[i]/speeds[end] for i in 1:size(per.speeds, 1)}

and

  parameter Modelica.SIunits.PressureDifference[:] heads(
    each min=0,
    each displayUnit="Pa")=
    dp_nominal*{(speeds[i]/speeds[end])^2 for i in 1:size(per.speeds, 1)}