modelTestWaterFlow1DFV_DB

Test case for Water.Flow1DFV with Dittus-Boelter heat transfer
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Extends from Modelica.Icons.Example (Icon for runnable examples).

Information

The model is designed to test the component Water.Flow1DFV (fluid side of a heat exchanger, model uses finite volumes), with Dittus-Boelter heat transfer coefficient computation.

This model represent the fluid side of a heat exchanger with convective exchange with an external source of uniform given temperature.

At time t = 10 s, the external temperature is raised.

Simulation Interval = [0...40] sec

Integration Algorithm = DASSL

Algorithm Tolerance = 1e-6

Parameters

TypeNameDefaultDescription
IntegerNnodes10number of Nodes
Modelica.SIunits.LengthLhex10total length
Modelica.SIunits.DiameterDihex0.02internal diameter
Modelica.SIunits.RadiusrhexDihex/2internal radius
Modelica.SIunits.LengthomegahexModelica.Constants.pi*Dihexinternal perimeter
Modelica.SIunits.AreaAhexModelica.Constants.pi*rhex^2internal cross-section
RealCfhex0.005friction coefficient
Modelica.SIunits.MassFlowRatewhex0.31nominal mass flow rate
Modelica.SIunits.Pressurephex3e5initial pressure
Modelica.SIunits.SpecificEnthalpyhs1e5initial inlet specific enthalpy

Components

TypeNameDefaultDescription
Water.Flow1DFVhexFV
Thermal.TempSource1DFVTempSource
Water.ValveLinvalve
Water.SourceMassFlowFluidSource
Water.SinkPressureFluidSink
Modelica.Blocks.Sources.StepTemperature
Modelica.Blocks.Sources.ConstantConstant1
Water.SensTT_in
Water.SensTT_out
Systemsystem

Contents

NameDescription
Medium