Residuals : Final or 0 ?
Hello
to check convergence in openfoam I used the foamJob & foamLog utilities which write data in text files. In these text files, for each variable of interest I always have two files : (example for p) p_0 pFinalRes_0 Which one should I look at for the convergence? p_0 seems to decrease continually while pFinalRes_0 has jumps And what are the meaning of these two residuals? Thanks for the help 
and what about time step continuity error local, global and cumulatice?
How should they behave? Always above 10^3 or something? Only the last values after X iterations should be looked at? Thanks for your help 
request
hi
how can I visualize the residuals? I wonder if there is a way to see the residuals like the fluent? thanks 
you can!
just do like this solver > log foamLog log cd logs xmgrace log y legend load pRes_0 example : simpleFoam log for the solver (I'm not sure about the name in xmgrace for the variables, just check in the log directory :)) 
Quote:

Hehe, I use pyFoam tools too (and I'm neutral :D)
Best, 
help
hi foamers
I have simulated a contraction flow. how can I plot for example velocity or the (tauxxtauxy) across a line connecting two points in the geometry. after the simulation at every time there are p, phi, U, tau, tau_0 and etc. files at a folder at that time. thanks a lot 
You can plot over lines in paraview. For the stress tensor, you've to first compute it from the fields you stored.
Best, 
help
hi
thank you very much alberto but can you possibly explain more? I cant clearly understand your directions the best 
To plot over a line, open you case in paraview, show it as usual, then use the "Plot over a line" filter.
To save the stress tensor, use the stressComponents utility after you run the case. Best, 
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