Setting Up User Field Functions
Create the field functions that are required for this tutorial.
This tutorial makes extensive use of field functions to define case parameters, to set up boundary conditions, and to analyze and present results.
For convenience, these field functions can be set up by running a macro before you set up any models.
To create the user field functions:
- Select .
- In the Open dialog, navigate to your working directory and select wb_setupFieldFunctions.java.
- Click the Open button to run the macro.
The field functions are tabulated below:
Case Parameter Field Functions
|
EquivalentDiameter |
|
|---|---|
| Type | Scalar |
| Definition | 0.0154 |
| Ignore Boundary Values | Deactivated |
|
HeatedLength |
|
|---|---|
| Type | Scalar |
| Definition | 2.0 |
| Ignore Boundary Values | Deactivated |
|
SystemPressure |
|
|---|---|
| Type | Scalar |
| Definition | 4500000.0 |
| Ignore Boundary Values | Deactivated |
|
SaturationTemperature |
|
|---|---|
| Type | Scalar |
| Definition | 530.59 |
| Ignore Boundary Values | Deactivated |
|
InletDensity |
|
|---|---|
| Type | Scalar |
| Definition | 832.06 |
| Ignore Boundary Values | Deactivated |
|
InletMassFlux |
|
|---|---|
| Type | Scalar |
| Definition | 900.0 |
| Ignore Boundary Values | Deactivated |
|
InletTemperature |
|
|---|---|
| Type | Scalar |
| Definition | 470.63 |
| Ignore Boundary Values | Deactivated |
|
InletVelocity |
|
|---|---|
| Type | Vector |
| Definition | [ $InletMassFlux/$InletDensity, 0, 0 ] |
| Ignore Boundary Values | Deactivated |
|
WallHeatFlux |
|
|---|---|
| Type | Scalar |
| Definition | 570000.0 |
| Ignore Boundary Values | Deactivated |
Model Field Functions
|
IterationsToFullPower |
|
|---|---|
| Type | Scalar |
| Definition | 200.0 |
| Ignore Boundary Values | Deactivated |
|
WallHeatFluxDistribution |
|
|---|---|
| Type | Scalar |
| Definition | ($$Centroid[0] > 0 && $$Centroid[0] < $HeatedLength) ? $WallHeatFlux : 0.0 |
| Ignore Boundary Values | Deactivated |
|
WallHeatFluxIterationRamp |
|
|---|---|
| Type | Scalar |
| Definition | ( $Iteration < $IterationsToFullPower ? ($WallHeatFluxDistribution * $Iteration )/ $IterationsToFullPower : $WallHeatFluxDistribution ) |
| Ignore Boundary Values | Deactivated |
| dMax | |
|---|---|
| Type | Scalar |
| Definition | 0.012 |
| Ignore Boundary Values | Deactivated |
| dMin | |
|---|---|
| Type | Scalar |
| Definition | 1.0E-6 |
| Ignore Boundary Values | Deactivated |
|
ClippedSauterMeanDiameter |
|
|---|---|
| Type | Scalar |
| Definition | ( $SauterMeanDiameterVapor < $dMin ? $dMin : ( $SauterMeanDiameterVapor > $dMax ? $dMax : $SauterMeanDiameterVapor ) ) |
| Ignore Boundary Values | Deactivated |
Analysis Field Functions
|
InletThermodynamicQuality |
|
|---|---|
| Type | Scalar |
| Definition | $SpecificHeatLiquid * ($InletTemperature - $SaturationTemperature)/ ${LatentHeatLiquid Vapor Interface} |
| Ignore Boundary Values | Deactivated |
|
ThermodynamicQuality |
|
|---|---|
| Type | Scalar |
| Definition | $InletThermodynamicQuality+ 4 * $WallHeatFlux * $$Centroid[0]/ ( $InletMassFlux * ${LatentHeatLiquid Vapor Interface} * $EquivalentDiameter ) |
| Ignore Boundary Values | Deactivated |
|
LiquidSubcooling |
|
|---|---|
| Type | Scalar |
| Definition | ${TemperatureLiquid Vapor Interface} - ${TemperatureLiquid} |
| Ignore Boundary Values | Activated |
|
WallSuperHeat |
|
|---|---|
| Type | Scalar |
| Definition | ${TemperatureLiquid} - ${TemperatureLiquid Vapor Interface} |
| Ignore Boundary Values | Deactivated |
|
QuenchingHeatFlux |
|
|---|---|
| Type | Scalar |
| Definition | (1-${WallDryoutAreaFractionLiquid Vapor Interface}) * ${BubbleInducedQuenchingHeatTransferCoefficientLiquid Vapor Interface} * ${BubbleInducedQuenchingTemperatureFactorLiquid Vapor Interface} * ( $WallSuperHeat + $LiquidSubcooling ) |
| Ignore Boundary Values | Deactivated |
|
WallEvaporationRate |
|
|---|---|
| Type | Scalar |
| Definition | -${WallInterphaseMassFluxLiquid Vapor Interface} |
| Ignore Boundary Values | Deactivated |
|
BulkCondensationRate |
|
|---|---|
| Type | Scalar |
| Definition | ( ${InterphaseMassTransferRateLiquid Vapor Interface} > 0 ? ${InterphaseMassTransferRateLiquid Vapor Interface} : 0 ) |
| Ignore Boundary Values | Deactivated |
|
BulkEvaporationRate |
|
|---|---|
| Type | Scalar |
| Definition | ( ${InterphaseMassTransferRateLiquid Vapor Interface} < 0 ? -${InterphaseMassTransferRateLiquid Vapor Interface} : 0 ) |
| Ignore Boundary Values | Deactivated |