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March 8, 2010, 14:15 |
Dynamic mesh simulation not converging
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Member
Join Date: Jun 2009
Posts: 31
Rep Power: 17 |
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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continuity, convergence, dynamic mesh, piso |
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