377080de52
This boundary condition now solves for the wall temperature by interval
bisection, which should be significantly more robust than the previous
fixed-point iteration procedure. There is a new non-dimensional
"tolerance" setting that controls how tightly this solution procedure
solves the wall temperature. The "relax" setting is no longer used.
The boundary condition no longer triggers re-evaluation of the
temperature condition in order to re-calculate the heat flux within the
solution iteration. Instead, it extracts physical coefficients from the
form of the boundary condition and uses these to form a linearised
approximation of the heat flux. This is a more general approach, and
will not trigger side-effects associated with re-evaluating the
temperature condition.
The fixedMultiphaseHeatFlux condition has been replaced by a
uniformFixedMultiphaseHeatFlux condition, which constructs a mixed
constraint which portions a specified heat flux between the phases in
such a way as to keep the boundary temperature uniform across all
phases. This can be applied to all phases. It is no longer necessary to
apply a heat flux model to one "master" phase, then map the resulting
temperature to the others. An example specification of this boundary
condition is as follows:
wall
{
type uniformFixedMultiphaseHeatFlux;
q 1000;
relax 0.3;
value $internalField;
}
The wall boiling tutorials have been updated to use these new functions,
and time-varying heat input has been used to replace the
stop-modify-restart pattern present in the single-region cases.
45 lines
1.2 KiB
Bash
Executable File
45 lines
1.2 KiB
Bash
Executable File
#!/bin/sh
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cd ${0%/*} || exit 1 # run from this directory
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# Source tutorial run functions
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. $WM_PROJECT_DIR/bin/tools/RunFunctions
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runApplication blockMesh
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runApplication extrudeMesh
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runApplication splitMeshRegions -cellZones -overwrite
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paraFoam -region fluid -touch
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paraFoam -region solid -touch
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runApplication decomposePar -allRegions
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runParallel $(getApplication)
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runApplication reconstructPar -latestTime -allRegions
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runApplication foamPostProcess -latestTime -region fluid -func "
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graphCell
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(
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funcName=graph,
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start=(3.4901 0 0),
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end=(3.4901 0.0096 0),
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fields=(alpha.gas T.liquid T.gas)
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)"
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runApplication -append foamPostProcess -region fluid -latestTime -func "
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patchSurface
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(
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funcName=patchWallBoilingProperties,
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patch=wall,
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surfaceFormat=raw,
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interpolate=false,
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fields=(dDeparture.liquid fDeparture.liquid nucleationSiteDensity.liquid wetFraction.liquid qQuenching.liquid qEvaporative.liquid)
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)"
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if ! isTest "$@"
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then
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./validation/createGraphs
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./validation/createWallBoilingPropertiesGraphs
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fi
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#------------------------------------------------------------------------------
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