[Sargam05]

Hello everyone,

I am using OpenFOAM-ext for the stressAnalysis problem. I have successfully used Residual script to plot gnuplot in OpenFOAM1.7.1. I have made changes in the Residual script based on OpenFAOM-ext log file but it is showing some error.

Following is the log file in my case:

Time: 1

Time 1, Corrector 0, Solving for U using DICPCG, residual = 1, relative residual = 59362.4

Time 1, Solving for U, Initial residual = 1, Final residual = 1, Relative residual = 59362.4, No outer iterations 1
ExecutionTime = 26.44 s ClockTime = 27 s
ExecutionTime = 26.6 s


Time: 2

Time 2, Corrector 0, Solving for U using DICPCG, residual = 1, relative residual = 1

Time 2, Solving for U, Initial residual = 1, Final residual = 1, Relative residual = 1, No outer iterations 1
ExecutionTime = 37.93 s ClockTime = 38 s
ExecutionTime = 38.12 s


Time: 3

Time 3, Corrector 0, Solving for U using DICPCG, residual = 0.305633, relative residual = 1

Time 3, Solving for U, Initial residual = 0.305633, Final residual = 0.305633, Relative residual = 1, No outer iterations 1
ExecutionTime = 54.7 s ClockTime = 55 s
ExecutionTime = 54.9 s


Time: 4

Time 4, Corrector 0, Solving for U using DICPCG, residual = 0.229696, relative residual = 1

Time 4, Solving for U, Initial residual = 0.229696, Final residual = 0.229696, Relative residual = 1, No outer iterations 1
ExecutionTime = 66.4 s ClockTime = 67 s
ExecutionTime = 66.59 s


Time: 5

Time 5, Corrector 0, Solving for U using DICPCG, residual = 0.155004, relative residual = 1

Time 5, Solving for U, Initial residual = 0.155004, Final residual = 0.155004, Relative residual = 1, No outer iterations 1
ExecutionTime = 83.12 s ClockTime = 83 s
ExecutionTime = 83.3 s


Time: 6

Time 6, Corrector 0, Solving for U using DICPCG, residual = 0.088822, relative residual = 1

Time 6, Solving for U, Initial residual = 0.088822, Final residual = 0.088822, Relative residual = 1, No outer iterations 1
ExecutionTime = 96.02 s ClockTime = 96 s
ExecutionTime = 96.21 s


Time: 7

Time 7, Corrector 0, Solving for U using DICPCG, residual = 0.0763407, relative residual = 1

Time 7, Solving for U, Initial residual = 0.0763407, Final residual = 0.0763407, Relative residual = 1, No outer iterations 1
ExecutionTime = 109.27 s ClockTime = 110 s
ExecutionTime = 109.45 s


Time: 8

Time 8, Corrector 0, Solving for U using DICPCG, residual = 0.0426613, relative residual = 1

Time 8, Solving for U, Initial residual = 0.0426613, Final residual = 0.0426613, Relative residual = 1, No outer iterations 1
ExecutionTime = 121.37 s ClockTime = 122 s
ExecutionTime = 121.57 s


The script I am using to plot gnuplot is:

set terminal png
set output "filename.png"

set logscale y
set title "Residuals"
set ylabel 'Residual'
set xlabel 'Time'
cat log | grep 'Solving for U' | cut -d' ' -f9 | tr -d ','" title 'U' with lines
pause 1
reread


It is showing following error:

cat log | grep 'Solving for U' | cut -d' ' -f9
^
"Residuals", line 8: invalid command

sangeeta@sangeeta-laptop:~/Desktop/plateHole0.0001stress$ gnuplot Residuals

cat log | grep 'Solving for U' | cut -d' ' -f9 | tr -d ','" title 'Ux' with lines"
^
"Residuals", line 8: invalid command

sangeeta@sangeeta-laptop:~/Desktop/plateHole0.0001stress$ gnuplot Residuals

cat log | grep 'Solving for U' | cut -d' ' -f9 | tr -d ','" title 'Ux' with lines"
^
"Residuals", line 8: invalid command


Am I using wrong script? Can anyone explain how I can change the script to plot residual gnuplot based on log file (which I have mentioned above)?

Best regards,
Sangeeta