Eulerian multiphase & underelaxation... -- CFD Online Discussion Forums

August 28, 2006, 07:26	Eulerian multiphase & underelaxation...	#1
HP Guest Posts: n/a	Dear CFD users, I am on a multiphase Eulerian, unsteady case for which the proper time step is refered to be about 1e-3 to 1e-4. I noticed that if I strongly underelax the momentum equation (0.005!) the solution easily converges for a time step of 0.1s! Why this is happening? Is the physics of the solution affected? Thank you for your response, HP

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