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|
#!/bin/sh
cd ${0%/*} || exit 1 # Run from this directory
. $WM_PROJECT_DIR/bin/tools/RunFunctions # Tutorial run functions
# Dummy external solver to communicate with OpenFOAM via externalCoupled
# functionObject
#
# Functionality is hard-coded for this particular test case
# - patch temperatures increased by 1K on each step
#
# -----------------------------------------------------------------------------
# Check for unassigned variables
set -u
echo "Executing dummy external solver"
commsDir="comms"
patchDir="heater_topAir/coupleGroup"
fieldName="T"
lockFile="${commsDir}/OpenFOAM.lock"
dataFile="${commsDir}/${patchDir}/${fieldName}"
waitSec=5
timeOut=100
nSteps=1000 # maximum number of time steps. Note: should be more than
# number of iterations on the OpenFOAM side
stopAt=600 # external solver signals OpenFOAM to stop
refGrad=0
valueFraction=1
# Remove any old junk
\rm -f $lockFile 2>/dev/null
log()
{
echo "External: $@"
}
# Create lock file to pass control to OpenFOAM
useMaster()
{
log "creating lock file '${lockFile}'"
echo "status=openfoam" >| ${lockFile}
}
# Lock file with special content to stop OpenFOAM master
stopMasterNow()
{
log "writeNow terminate via lock file '${lockFile}'"
echo "action=writeNow" >| ${lockFile}
}
# Patch size (heater/minY)
nFaces1=$(getNumberOfPatchFaces minY heater) || exit $?
# Patch size (topAir/minX)
nFaces2=$(getNumberOfPatchFaces minX topAir) || exit $?
init()
{
log "init - creating ${dataFile}.in"
cat /dev/null >| "${dataFile}.in"
# Local face counter, Local refValue
local nFaces refValue
# Patch (heater/minY)
nFaces="$nFaces1"
refValue=500
log "init - adding $nFaces data elements with refValue $refValue"
while [ "$nFaces" -gt 0 ]
do
nFaces=$((nFaces - 1))
echo "$refValue $refGrad $valueFraction"
done >> "${dataFile}.in"
# Patch (topAir/minX)
nFaces="$nFaces2"
refValue=300
log "init - adding $nFaces data elements with refValue $refValue"
while [ "$nFaces" -gt 0 ]
do
nFaces=$((nFaces - 1))
echo "$refValue $refGrad $valueFraction"
done >> "${dataFile}.in"
# Verify line count?
# log "init ($(wc -l ${dataFile}.in))"
# Give time for T.in file to flush
sleep 1
useMaster
}
# Create the comms directory
mkdir -p ${commsDir}/${patchDir}
# Tutorial case uses 'initByExternal' option, so we must provide initial values
init
totalWait=0
step=0
while [ $step -lt $nSteps ]
do
if [ -f $lockFile ]
then
if grep -q "status=done" ${lockFile}
then
log "found lock file '${lockFile}' with 'status=done' - finished"
break
elif [ -s $lockFile ]
then
log "found lock file '${lockFile}' containing '$(< $lockFile)' - waiting"
else
log "found lock file '${lockFile}' - waiting"
fi
totalWait=$(expr $totalWait + $waitSec)
if [ $totalWait -gt $timeOut ]
then
log "timeout"
break
else
sleep $waitSec
fi
else
totalWait=0
step=$(expr $step + 1)
log "step $step"
log "lock not present - taking control"
log "sleeping for $waitSec secs to simulate external process"
sleep $waitSec
log "updating ${dataFile}.in from ${dataFile}.out"
if [ -f "${dataFile}.out" ]
then
awk '{if( $1 != "#" ){print $1+1 " 0 1"}}' \
${dataFile}.out >| ${dataFile}.in
else
log "Warning: no such file ${dataFile}.out"
fi
if [ "${stopAt:-0}" -eq $step ]
then
stopMasterNow
else
useMaster
fi
fi
done
log "done"
# Remove the lock file too
\rm -f $lockFile 2>/dev/null
# For log collector:
echo "End"
#------------------------------------------------------------------------------
|
