.Modelica.Fluid.Dissipation.PressureLoss.StraightPipe.dp_overall_DP

Information

Calculation of pressure loss in a straight pipe for overall flow regime of an incompressible and single-phase fluid flow only considering surface roughness.

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_overall_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_overall_DP
  extends Modelica.Icons.Function;
  import FD = Modelica.Fluid.Dissipation.PressureLoss.StraightPipe;
  import SMOOTH = Modelica.Fluid.Dissipation.Utilities.Functions.General.Stepsmoother;
  input Modelica.Fluid.Dissipation.PressureLoss.StraightPipe.dp_overall_IN_con IN_con "Input record for function dp_overall_DP" annotation(
    Dialog(group = "Constant inputs"));
  input Modelica.Fluid.Dissipation.PressureLoss.StraightPipe.dp_overall_IN_var IN_var "Input record for function dp_overall_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_overall_DP";
end dp_overall_DP;