Converged solution with residuum oscilation icoFoam -- CFD Online Discussion Forums

May 7, 2014, 05:37	Converged solution with residuum oscilation icoFoam	#1
DuarteMagalhaes New Member Duarte Magalhães Join Date: Apr 2014 Location: Lisbon, Portugal Posts: 24 Rep Power: 12	Hi everyone, I am using icoFoam to simulate a laminar flow inside a cylindrical duct, and although my solution is converged, the residuum oscillate and I think I have a problem there. Here are my residuum results: I know that for explicit algorithms, this problem would be solved by reducing the under-relaxation factors, but in implicit algorithms i don't know how to solve it. My fvSchemes file is the default used by icoFoam. I am also limiting the Courant number to 0.3 If anyone could help me on this i would much appreciate! Thanks in advance!

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