Pressure diverging problem during LES
I am trying LES with 0.0005s time step,
but pressure is diverging for some time steps. Solution is not always diverging, and divergence occurs about once per 100 time step. I checked velocity field, but velocity didn't divereged and only pressure had diverged to infinite or negative-infinite. I tried LES with other mesh settings with finer meshes, but same problem occurred. Does someone have any idea for reason or solution for this problem? |
What drove you to that time step? Are you sure that your CFL number is appropriate? Knowing what you are trying to model would help. 'Trying LES' can mean a lot of things.
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