rhoPimpleFoam rhoMin rhoMax

ddemiroguzhan · October 31, 2017, 03:00

Greetings all,
I've been trying to work with rhoPimpleFoam solver for a while. Before that I was using sonicFoam without a problem. When i try to run the code, it explodes because rhoMin value gets too small (my threshold is rhoMin=0.01, and it becomes 0.01 after a few iterations and then explodes.) Any suggestion to rhoMin ?

Thanks,
Oguz

matejfor · October 31, 2017, 16:31

Well rhoMin parameter is OK. it helps you to control the solution. Is it physical for your solution to have rho lower than 0.01? If yes, set it lower, otherwise the problem will be (my humble guess) ill posed BCs or very unfavourable initial conditions. What about the min and max pressure? Reasonable?

ddemiroguzhan · November 2, 2017, 04:13

Thank you for your answer. I have solved the problem.

Oguz

October 31, 2017, 03:00	rhoPimpleFoam rhoMin rhoMax	#1
ddemiroguzhan New Member Oğuzhan Demir Join Date: Dec 2016 Posts: 19 Rep Power: 10	Greetings all, I've been trying to work with rhoPimpleFoam solver for a while. Before that I was using sonicFoam without a problem. When i try to run the code, it explodes because rhoMin value gets too small (my threshold is rhoMin=0.01, and it becomes 0.01 after a few iterations and then explodes.) Any suggestion to rhoMin ? Thanks, Oguz

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October 31, 2017, 16:31		#2
matejfor Senior Member matej forman Join Date: Mar 2009 Location: Brno, Czech Republic Posts: 182 Rep Power: 17	Well rhoMin parameter is OK. it helps you to control the solution. Is it physical for your solution to have rho lower than 0.01? If yes, set it lower, otherwise the problem will be (my humble guess) ill posed BCs or very unfavourable initial conditions. What about the min and max pressure? Reasonable?

November 2, 2017, 04:13		#3
ddemiroguzhan New Member Oğuzhan Demir Join Date: Dec 2016 Posts: 19 Rep Power: 10	Thank you for your answer. I have solved the problem. Oguz