# Plot Residuals in each Outer Iteration using foamLog or PyFoam

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 September 29, 2015, 16:52 Plot Residuals in each Outer Iteration using foamLog or PyFoam #1 Member   Sravan Kumar Join Date: May 2014 Posts: 57 Rep Power: 11 Hi I am running a transient simulation using pimpleDyMFoam with nOuterCorrectors as more than 5. Hence I would be getting more than 5 Pimple iterations per timestep. Lets take 5 as an example. Following is for a single timestep: Code: ```Courant Number mean: 0.0768848 max: 0.484731 deltaT = 0.00266306 Time = 0.052065 solidBodyMotionFunctions::rotatingMotion::transformation(): Time = 0.052065 transformation: ((0 0 0) (0.986653 (0 0 0.162839))) AMI: Creating addressing and weights between 96 source faces and 96 target faces AMI: Patch source sum(weights) min/max/average = 1, 1, 1 AMI: Patch target sum(weights) min/max/average = 1, 1, 1 GAMG: Solving for pcorr, Initial residual = 1, Final residual = 0.0129894, No Iterations 5 time step continuity errors : sum local = 2.20928e-06, global = -6.56531e-08, cumulative = 3.15662e-06 PIMPLE: iteration 1 smoothSolver: Solving for Ux, Initial residual = 0.0188864, Final residual = 7.25993e-05, No Iterations 2 smoothSolver: Solving for Uy, Initial residual = 0.0188878, Final residual = 7.28449e-05, No Iterations 2 GAMG: Solving for p, Initial residual = 0.0608934, Final residual = 0.000229068, No Iterations 4 time step continuity errors : sum local = 3.94643e-07, global = 6.55667e-10, cumulative = 3.15728e-06 PIMPLE: iteration 2 smoothSolver: Solving for Ux, Initial residual = 0.000766973, Final residual = 4.09393e-06, No Iterations 2 smoothSolver: Solving for Uy, Initial residual = 0.000767082, Final residual = 4.09925e-06, No Iterations 2 GAMG: Solving for p, Initial residual = 0.0288272, Final residual = 0.000196263, No Iterations 4 time step continuity errors : sum local = 3.37737e-07, global = 6.70285e-10, cumulative = 3.15795e-06 PIMPLE: iteration 3 smoothSolver: Solving for Ux, Initial residual = 0.000125893, Final residual = 9.14868e-06, No Iterations 1 smoothSolver: Solving for Uy, Initial residual = 0.000126271, Final residual = 9.24126e-06, No Iterations 1 GAMG: Solving for p, Initial residual = 0.00483534, Final residual = 3.92075e-05, No Iterations 4 time step continuity errors : sum local = 6.53547e-08, global = 6.82305e-10, cumulative = 3.15863e-06 PIMPLE: iteration 4 smoothSolver: Solving for Ux, Initial residual = 2.47375e-05, Final residual = 1.8218e-06, No Iterations 1 smoothSolver: Solving for Uy, Initial residual = 2.46127e-05, Final residual = 1.8266e-06, No Iterations 1 GAMG: Solving for p, Initial residual = 0.000999491, Final residual = 9.90021e-06, No Iterations 4 time step continuity errors : sum local = 1.74028e-08, global = 6.82704e-10, cumulative = 3.15931e-06 PIMPLE: iteration 5 smoothSolver: Solving for Ux, Initial residual = 5.80662e-06, Final residual = 4.36193e-07, No Iterations 1 smoothSolver: Solving for Uy, Initial residual = 5.78219e-06, Final residual = 4.34769e-07, No Iterations 1 GAMG: Solving for p, Initial residual = 0.000251095, Final residual = 5.74394e-07, No Iterations 6 time step continuity errors : sum local = 1.65856e-09, global = 6.83235e-10, cumulative = 3.16e-06 ExecutionTime = 1.58 s ClockTime = 2 s``` I would like to plot final residuals for each pimpleIteration. I am flexible using foamLog or pyFoam also. But I do not know how to use them. I have seen such plots in openfoamwiki in the following link https://openfoamwiki.net/index.php/O...hm_in_OpenFOAM Any suggestions or help please.

 October 30, 2015, 10:41 #2 Senior Member   Agustín Villa Join Date: Apr 2013 Location: Alcorcón Posts: 309 Rep Power: 14 Hi if I am not wrong, you can use foamLog, and each corrector will be expressed as Ux_X UxFinalRes_X ... where X is the number of the outer corrector (it starts from 0)

 Tags foam, openfoam, plot, pyfoam, residuals every iteration

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