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Running Simulation - Convergence Monitoring - Torques
Torques are located in directory postProcessing/$region according to forces function object setup in system/forces.fun. Simple script torques.gp can plot the torques during the computation:
set grid set xlabel "iterations" set ylabel "torque [N.m]" set key box above set yrange [-10:5] plot "< cat ./postProcessing/rotor/forcesBlade/0/forces.dat | grep -v '#' | sed 's/[(,)]/ /g' | awk '{print $11}' " with lines title "torque from pressure - x", \ "< cat ./postProcessing/rotor/forcesBlade/0/forces.dat | grep -v '#' | sed 's/[(,)]/ /g' | awk '{print $12}' " with lines title "torque from pressure - y", \ "< cat ./postProcessing/rotor/forcesBlade/0/forces.dat | grep -v '#' | sed 's/[(,)]/ /g' | awk '{print $13}' " with lines title "torque from pressure - z", \ "< cat ./postProcessing/rotor/forcesBlade/0/forces.dat | grep -v '#' | sed 's/[(,)]/ /g' | awk '{print $14}' " with lines title "torque from viscous - x", \ "< cat ./postProcessing/rotor/forcesBlade/0/forces.dat | grep -v '#' | sed 's/[(,)]/ /g' | awk '{print $15}' " with lines title "torque from viscous - y", \ "< cat ./postProcessing/rotor/forcesBlade/0/forces.dat | grep -v '#' | sed 's/[(,)]/ /g' | awk '{print $16}' " with lines title "torque from viscous - z" pause 10 reread
Run the script:
# gnuplot torques.gp

Figure: Water turbine CFD, torques monitoring plot example.