Multiphase VOF not converging -- CFD Online Discussion Forums

March 18, 2016, 07:57	Multiphase VOF not converging	#1
hazari.aaquib New Member Syed Aaquib Hazari Join Date: Apr 2015 Location: Delft Posts: 16 Rep Power: 11	I am simulating a steady state stratified two phase 2D channel flow with periodic boundary conditions. The residuals (all) oscillate for the default values of URFs. However, when I reduce the residuals of k, w & P to 0.1 the oscillations vanish and the solution converges (extremely slowly). Is it advisable to do so? P.S: I have changed grid sizes, ran unsteady state simulations. Nothing seems to prevent the oscillations when the URFs are at default values.

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