.Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_DP

Information

Calculation of a generic pressure loss in dependence of nominal fluid variables (e.g., nominal density) via interpolation from an operation point. This generic function considers the pressure loss law via a nominal pressure loss (dp_nom), a pressure loss coefficient (zeta_TOT) and a pressure loss law exponent (exp) as well as the influence of density on pressure loss.

Generally this function is numerically best used for the incompressible case , where the mass flow rate (m_flow) is known (as state variable) in the used model and the corresponding pressure loss (DP) has to be calculated. On the other hand the function dp_nominalPressureLossLawDensity_MFLOW is numerically best used for the compressible case if the pressure loss (dp) is known (out of pressures as state variable) and the mass flow rate (M_FLOW) has to be calculated. See more information.

Interface

function dp_nominalPressureLossLawDensity_DP
  extends Modelica.Icons.Function;
  import FD = Modelica.Fluid.Dissipation.PressureLoss.General;
  input Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_con IN_con "Input record for function dp_nominalPressureLossLawDensity_DP" annotation(
    Dialog(group = "Constant inputs"));
  input Modelica.Fluid.Dissipation.PressureLoss.General.dp_nominalPressureLossLawDensity_IN_var IN_var "Input record for function dp_nominalPressureLossLawDensity_DP" annotation(
    Dialog(group = "Variable inputs"));
  input SI.MassFlowRate m_flow "Mass flow rate" annotation(
    Dialog(group = "Input"));
  output SI.Pressure DP "Output for function dp_nominalPressureLossLawDensity_yesAJac_DP";
end dp_nominalPressureLossLawDensity_DP;