WOLFRAM SYSTEM MODELER
SimpleFrictionSimple friction model |
Wolfram Language
In[1]:=
SystemModel["Modelica.Thermal.FluidHeatFlow.BaseClasses.SimpleFriction"]
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Information
This information is part of the Modelica Standard Library maintained by the Modelica Association.
Definition of relationship between pressure drop and volume flow rate:
- -V_flowLaminar < VolumeFlow < +V_flowLaminar: laminar, i.e., linear dependency of pressure drop on volume flow.
- -V_flowLaminar > VolumeFlow or VolumeFlow < +V_flowLaminar: turbulent, i.e., quadratic dependency of pressure drop on volume flow.
Linear and quadratic dependency are coupled smoothly at V_flowLaminar / dpLaminar. Quadratic dependency is defined by nominal volume flow and pressure drop (V_flowNominal / dpNominal). See also sketch at diagram layer.
Parameters (5)
| V_flowLaminar |
Value: Type: VolumeFlowRate (m³/s) Description: Laminar volume flow |
|---|---|
| dpLaminar |
Value: Type: Pressure (Pa) Description: Laminar pressure drop |
| V_flowNominal |
Value: Type: VolumeFlowRate (m³/s) Description: Nominal volume flow |
| dpNominal |
Value: Type: Pressure (Pa) Description: Nominal pressure drop |
| frictionLoss |
Value: 0 Type: Real Description: Part of friction losses fed to medium |
Extended by (1)
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Modelica.Thermal.FluidHeatFlow.Components Pipe with optional heat exchange |