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Obstructed internal flow - convergence stall

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March 15, 2011, 06:35	Obstructed internal flow - convergence stall	#1
pakdee New Member anonymous Join Date: Mar 2011 Posts: 1 Rep Power: 0	Hi everyone, I'm modelling an unsteady 2D channel flow with a semi-circular obstruction located midway through the channel. The inlet velocity is uniform but is gradually increased (from zero) with time. I noticed that after a certain inlet velocity, the solver residual is not monotically reducing as before - instead the convergence is somewhat stalled !? Why is that ? And, how could this be overcome ? Appreciate all the response.

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