How to Plot and Control simpleFoam Residuals in OpenFoam

In this tutorial we show how to plot and keep track of residulas from the simpleFoam solver in openFoam. This is a very important part of a steady state simulation to make sure that your variables does indeed converge to a steady state solution.
Check out this thread to find the gnu plotting commands:
www.cfd-online....
Also you might wanna check out this great tutorial on residual plotting:
• How To Plot Residuals ...

[@ankitdave9193]

Hi Martin, Thank you so much for this detailed video, I cam across this when I was exploring to control p-residual line. I am defining three orthogonal corrector steps and this lead to frequent plotting of p residuals within that iteration, is there a way to control this? I am sure its been long since you uploaded this video, but any information over this matter will be really helpful for me.

[@CFDAsmaaHadane]

HELLO.. Thanks for this tutorial! please can you tell how I can change the color of paraview background?

[@sikandaryosufzai2790]

hi Martin, Thank you very much for the Video, Can we do this procedure for interFOAM solver alos though it is transient solver but i want to know at what second my simulation is converging, can you guide me please?

[@007aha1]

does it realy only work for simpleFoam solver as you said? for e.g interFoam it doesnt work because there is no residual control? because it isnt a stady state solver and you will never reach a stady state?

[@turtlemicro]

Can someone explain how to export the result in high quality?

[@Deshammanideep]

Sir, I have a problem. The residuals to my 3D simulation is not converging at all. what could be the problem.?

[@amremad4801]

Hi Martin, I want to thank you much about this video, also I have a question about how to plot residuals real time during running the simulation if you could help me. Thanks in advance!

[@powpawellsv]

hi +Martin, thanks for the video. It works fine for me.

[@Lynx-jl1fl]

thanx, glad you like it!

[@turtlemicro]

thank you so much!

[@baphangiap5027]

I don't see the file "resPlot" in OpenFOAM 2.2.2. Can you help me?

[@shuyuewang2283]

it's in author's corresponding github package.

[@atulwithsmile]

when you say "ramp up the total number of iterations or do some other modifications" what exactly other modifications are you talking about?????

[@Lynx-jl1fl]

+Atul Singh The point of the tutorial is to show you how to monitor the residuals of the variables to find out whether or not they are converging. Basically all of the settings in fvsolution is a candidate as "other modifications" but the first thing you should play around with is the residual control. Remember its the art of a steady state solver to find a converged solution, and sometimes this is can be a challenge. If you have wrong implemetation of boundary conditions, this is sure to cause issues. There is a ton of material on this on cfd-online: www.cfd-online.com/Forums/openfoam-solving/58365-simplefoam-convergence-problems.html