functionkc_laminar
Mean heat transfer coefficient of straight pipe | uniform wall temperature or uniform heat flux | hydrodynamically developed or undeveloped laminar flow regime
Extends from Modelica.Icons.Function (Icon for functions).
Information
Calculation of mean convective heat transfer coefficient kc of a straight pipe at an uniform wall temperature or uniform heat flux and for a hydrodynamically developed or undeveloped laminar fluid flow. Note that additionally a failure status is observed in this function to check if the intended boundary conditions are fulfilled. See more information .
Inputs
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_con | IN_con | Input record for function kc_laminar | |
| Modelica.Fluid.Dissipation.HeatTransfer.StraightPipe.kc_laminar_IN_var | IN_var | Input record for function kc_laminar |
Outputs
| Type | Name | Default | Description |
|---|---|---|---|
| SI.CoefficientOfHeatTransfer | kc | Convective heat transfer coefficient | |
| SI.PrandtlNumber | Pr | Prandtl number | |
| SI.ReynoldsNumber | Re | Reynolds number | |
| SI.NusseltNumber | Nu | Nusselt number | |
| Real | failureStatus | 0== boundary conditions fulfilled | 1== failure >> check if still meaningful results |
Revisions
2016-04-11 Stefan Wischhusen: Removed singularity for Re at zero mass flow rate.