modelTestFlow1Dd
Test case for Flow1D
Information
The model is designed to test the component Flow1D (fluid side of a heat exchanger, finite volumes).
This model is designed to the test compressibility effects. The operating fluid is superheated vapour; the heat flow entering the heat exchanger is set to zero.
During simulation mass flow rate changes:
- t=2 s, Step variation of the inlet mass flow rate. The pressure increases with a first order dynamics, the tube actually behaving like a pressurized tank.
Simulation Interval = [0...2] sec
Integration Algorithm = DASSL
Algorithm Tolerance = 1e-6
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | Nnodes | 20 | |
| Modelica.SIunits.Length | Lhex | 10 | |
| Modelica.SIunits.Diameter | Dihex | 0.02 | |
| Modelica.SIunits.Radius | rhex | Dihex/2 | |
| Modelica.SIunits.Length | omegahex | Modelica.Constants.pi*Dihex | |
| Modelica.SIunits.Area | Ahex | Modelica.Constants.pi*rhex^2 | |
| Real | Cfhex | 0.005 | |
| Modelica.SIunits.MassFlowRate | whex | 1e-2 | |
| Modelica.SIunits.Pressure | phex | 0.2e5 | |
| Modelica.SIunits.SpecificEnthalpy | hs | 3e6 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| SI.Time | tau | ||
| Water.Flow1D | hex | ||
| ThermoPower.Water.SourceMassFlow | MassFlowRateSource | ||
| ThermoPower.Water.SinkPressure | FluidSink | ||
| ThermoPower.Water.ValveLin | ValveLin1 | ||
| Modelica.Blocks.Sources.Step | MassFlowRateStep | ||
| Modelica.Blocks.Sources.Constant | Constant1 | ||
| ThermoPower.Thermal.HeatSource1D | HeatSource1D1 | ||
| Modelica.Blocks.Sources.Constant | ExtPower | ||
| Water.SensP | SensP | ||
| System | system |
Contents
| Name | Description |
|---|---|
 Medium |
Revisions
- 1 Oct 2003 by Francesco Schiavo:
First release.