crucial settings with respect to fvSchemes and fvSolution to achieve convergence -- CFD Online Discussion Forums

March 1, 2015, 15:31	crucial settings with respect to fvSchemes and fvSolution to achieve convergence	#1
canopus Member SM Join Date: Dec 2010 Posts: 97 Rep Power: 15	I am trying to do RANS of pulsating flow in a 2-D diffuser. I use pimpleFoam solver and the settings are copied from pitzDaily case. While giving uniform inlet velocity I have a converged solution with a very small deltaT. However when I run a simulation with pulsating inflow the simulation diverges. I am using kEpsilon with average y+ 22. What are the most crucial settings with respect to fvSchemes and fvSolution to achieve convergence (for different solvers as well)?

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