.SolarTherm.Models.Fluid.Flows.DarcyFrictionFactor

Information

Computes the Darcy friction factor from mass flow rate

Interface

function DarcyFrictionFactor
  import SI = Modelica.SIunits;
  import Modelica.Math;
  import Modelica.Constants.pi;
  input SI.MassFlowRate m_flow;
  input SI.Area area;
  input SI.Density rho;
  input SI.DynamicViscosity mu;
  input SI.Diameter diameter;
  input SI.Length roughness;
  input SI.Length length;
  input SI.ReynoldsNumber Re_turbulent = 4000 "Turbulent flow if Re >= Re_turbulent (dummy if use_Re_turbulent = false)";
  output SI.Pressure dp "Pressure loss (dp = port_a.p - port_b.p)";
end DarcyFrictionFactor;