modelConvectionResistanceCircularPipe
Validation of the correlation used to evaluate the convection resistance in circular pipes
Extends from Modelica.Icons.Example.
Information
This example validates the implementation of IBPSA.Fluid.Geothermal.Borefields.BaseClasses.Boreholes.BaseClasses.Functions.convectionResistanceCircularPipe for the evaluation of the convection thermal resistance in circular pipes.
In this validation case, the fluid mass flow rate increases with time so that Re = t.
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.SIunits.Height | hSeg | 1.0 | Height of the element |
| Modelica.SIunits.Radius | rTub | 0.02 | Tube radius |
| Modelica.SIunits.Length | eTub | 0.002 | Tube thickness |
| Modelica.SIunits.ThermalConductivity | kMed | 0.6 | Thermal conductivity of the fluid |
| Modelica.SIunits.DynamicViscosity | muMed | 1.002e-3 | Dynamic viscosity of the fluid |
| Modelica.SIunits.SpecificHeatCapacity | cpMed | 4182 | Specific heat capacity of the fluid |
| Modelica.SIunits.MassFlowRate | m_flow_nominal | 1 | Nominal mass flow rate |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real | Re | Reynolds number | |
| Real | Nu | Reynolds number | |
| Modelica.SIunits.MassFlowRate | m_flow | Mass flow rate | |
| Modelica.SIunits.ThermalResistance | RConv | Convection resistance |
Revisions
-
June 21, 2018, by Massimo Cimmino:
First implementation.