Calculates the dimension factor φ for Tapered reduction/expansion. The tapered angle θ should be specified.

Tapered Reduction:

Tapered Expansion:


function Tapered
  extends Modelica.Icons.Function;
  input SI.ReynoldsNumber N_Re "Reynolds number";
  input SI.Height p_eps "Pipe roughness height";
  input SI.Diameter D_i, D_o "Pipe diameters";
  input Modelica.Units.NonSI.Angle_deg theta "Angle of taper";
  output Real phi "Dimension factor";
end Tapered;

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