WOLFRAM SYSTEM MODELER
CubicInterpolation_ReCubic Hermite spline interpolation of the Reynolds number in transition regime of the Moody diagram (inverse formulation) |
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Wolfram Language
In[1]:=
SystemModel["Modelica.Fluid.Dissipation.Utilities.Functions.General.CubicInterpolation_Re"]
Out[1]:=
Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Syntax
Re = CubicInterpolation_Re(0, Re1, Re2, Delta, lambda2);
Description
Function CubicInterpolation_Re(..) approximates the Reynolds number
Re in the transition regime between laminar and turbulent flow
of the Moody diagram by an inverse formulation of a cubic Hermite spline interpolation. See
Modelica.Fluid.UsersGuide.ComponentDefinition.WallFriction (especially Region 2)
for a detailed explanation.
Syntax
Re = CubicInterpolation_Re(Re_turbulent, Re1, Re2, Delta, lambda2)
Inputs (5)
| Re_turbulent |
Type: Real Description: Unused input |
|---|---|
| Re1 |
Type: ReynoldsNumber Description: Boundary Reynolds number for laminar regime |
| Re2 |
Type: ReynoldsNumber Description: Boundary Reynolds number for turbulent regime |
| Delta |
Type: Real Description: Relative roughness |
| lambda2 |
Type: Real Description: Modified friction coefficient (= independent variable) |
Outputs (1)
| Re |
Type: ReynoldsNumber Description: Interpolated Reynolds number in transition region |
|---|
Revisions
2018-11-20 Stefan Wischhusen: Renamed function from CubicInterpolation_DP to CubicInterpolation_Re.