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Convergence monitoring using foamLog

Convergence of computation can be displayed using application foamLog
Useful for detailed analysis
Output is read from file e.g. log.simpleFoam
Application foamLog extracts important information and saves it to directory logs:
# foamLog log.simpleFoam
Use Gnuplot ^7.5
It is possible to watch convergence of any quantity:

Create new gnuplot script e.g. plot-k_0.gp:

# Gnuplot script file for plotting data from file "k_0"
set logscale y
plot 'logs/k_0'
pause mouse

# gnuplot plot-k_0.gp

Figure: OpenFOAM tutorial motor bike. Residuals of turbulent kinetic energy k

: Run plot-k_0.gp, by opening the script file in gnuplot program. This can be done as follows: Open gnuplot outside cygwin. Click on ChDir button (change directory) and navigate to the motorBike directory. Then click on open button and open the script.