modelTestFlow1Df
Test case for Flow1D
Information
The model is designed to test the component Flow1D (fluid side of a heat exchanger, model uses finite volumes).
This model represent the two fluid sides of a heat exchanger in counterflow configuration. The two sides are divided by a metal wall. The operating fluid is liquid water. The mass flow rate during the experiment and initial conditions are the same for the two sides.
During the simulation, the inlet specific enthalpy for hexA ("hot side") is changed:
- t=50 s, Step variation of the specific enthalpy of the fluid entering hexA .
Simulation Interval = [0...900] sec
Integration Algorithm = DASSL
Algorithm Tolerance = 1e-6
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Integer | Nnodes | 20 | |
| Modelica.SIunits.Length | Lhex | 200 | |
| 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 | 0.31 | |
| Modelica.SIunits.Pressure | phex | 3e5 | |
| Modelica.SIunits.SpecificEnthalpy | hinhex | 1e5 | |
| Modelica.SIunits.SpecificEnthalpy | houthex | 1e5 |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Water.Flow1D | hexA | ||
| Thermal.ConvHT | ConvHTB | ||
| Thermal.ConvHT | ConvHTA | ||
| ThermoPower.Water.SinkPressure | SideA_FluidSink | ||
| ThermoPower.Water.SinkPressure | SideB_FluidSink | ||
| ThermoPower.Water.SourceMassFlow | SideA_MassFlowRate | ||
| ThermoPower.Water.ValveLin | ValveLin1 | ||
| ThermoPower.Water.ValveLin | ValveLin2 | ||
| Water.Flow1D | hexB | ||
| ThermoPower.Thermal.MetalTube | MetalWall | ||
| ThermoPower.Water.SensT | SensT_A_in | ||
| Modelica.Blocks.Sources.Step | SideA_InSpecEnth | ||
| Modelica.Blocks.Sources.Constant | Constant1 | ||
| Modelica.Blocks.Sources.Constant | Constant2 | ||
| ThermoPower.Water.SensT | SensT_B_in | ||
| ThermoPower.Water.SourceMassFlow | SourceW1 | ||
| ThermoPower.Water.SensT | SensT_A_out | ||
| ThermoPower.Water.SensT | SensT_B_out | ||
| Thermal.CounterCurrent | CounterCurrent1 | ||
| System | system |
Contents
| Name | Description |
|---|---|
 Medium |
Revisions
- 1 Oct 2003 by Francesco Schiavo:
First release.