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8d5800c5f8
- moved control to functionObject (from bc) - this allows multi-region support - see heatTransfer/chtMultiRegionFoam/externalCoupledMultiRegionHeater tut - generalisation of streamed reading/writing of specialised bcs
105 lines
2.5 KiB
Bash
Executable File
105 lines
2.5 KiB
Bash
Executable File
#!/bin/sh
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#
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# Dummy external solver to communicate with OpenFOAM via externalCoupled
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# functionObject
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#
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# Functionality is hard-coded for this particular test case
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# - patch temperatures increased by 1K on each step
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#
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cd ${0%/*} || exit 1 # Run from this directory
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# Check for unassigned variables
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set -u
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echo "Executing dummy external solver"
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commsDir="comms"
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regionGroupName="heater_topAir"
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patchGroupName="coupleGroup"
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fieldName="T"
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lockFile="${commsDir}/OpenFOAM.lock"
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dataFile="${commsDir}/${regionGroupName}/${patchGroupName}/${fieldName}"
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waitSec=1
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timeOut=10
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nSteps=200 # maximum number of time steps. Note: should be more than
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# number of iterations on the OpenFOAM side
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refGrad=0
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valueFraction=1
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log()
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{
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echo "External: $@"
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}
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init()
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{
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log "initialisation: creating ${dataFile}.in"
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# Hard-coded for patch of size 8 (heater/minY)
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n1=8
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refValue1=500
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touch "${dataFile}.in"
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log "initialisation: adding $n1 data elements with refValue $refValue1"
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for i in $(seq 1 $n1); do
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echo "$refValue1 $refGrad $valueFraction" >> "${dataFile}.in"
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done
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# Hard-coded for patch of size 40 (topAir/minX)
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n2=40
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refValue2=300
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log "initialisation: adding $n2 data elements with refValue $refValue2"
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for i in $(seq 1 $n2); do
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echo "$refValue2 $refGrad $valueFraction" >> "${dataFile}.in"
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done
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# create lock file to pass control to OF
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touch ${lockFile}
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}
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# create the comms directory
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mkdir -p ${commsDir}/${regionGroupName}/${patchGroupName}
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# tutorial case employs the 'initByExternalOption', so we need to provide
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# the initial values
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init
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totalWait=0
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step=0
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while [ $step -lt $nSteps ]; do
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if [ -f $lockFile ]; then
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log "found lock file ${lockFile} - waiting"
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totalWait=$(expr $totalWait + $waitSec)
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if [ $totalWait -gt $timeOut ]; then
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log "timeout"
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break
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else
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sleep $waitSec
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fi
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else
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totalWait=0
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step=$(expr $step + 1)
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log "step $step"
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log "lock not present - taking control"
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log "sleeping for $waitSec secs to simulate external process"
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sleep $waitSec
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log "updating ${dataFile}.in from ${dataFile}.out"
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awk '{if( $1 != "#" ){print $1+1 " 0 1"}}' \
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${dataFile}.out | tee ${dataFile}.in
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log "creating lock file ${lockFile}"
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touch ${lockFile}
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fi
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done
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log "done"
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# ----------------------------------------------------------------- end-of-file
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