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mrestrepo30 March 8, 2010 15:15

Dynamic mesh simulation not converging
 
Hi everybody,

I'm currently running a dynamic wall simulation in which I'm having problems with convergence for continuity.
I'm using the unsteady solver, and in solution controls I am using PISO.
For the pressure discretization either Standard or PRESTO, and for the Momentum: second order upwind.

I'm setting up a convergence criteria of 10^-5, with a small time step compared to the displacement of the grid (6.25^-4), and before running the unsteady simulations I ran a steady simulation until convergence, and then used this for the following simulations.

Does anyone has any suggestions to improve the convergence of my simulations?


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