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Forum: CFX

April 3, 2020, 06:57

Replies: 6

Centrifugal pump convergence issue

Views: 2,467

Posted By ghorrocks

The physical time scale is only used as a way of...

The physical time scale is only used as a way of advancing towards convergence. If you take big time steps you progress faster but risk divergence, if you take small time steps you progress slower...

Forum: CFX

February 26, 2011, 15:38

Replies: 6

Centrifugal pump convergence issue

Views: 2,467

Posted By ghorrocks

There are no general limits on timescale. For a...

There are no general limits on timescale. For a steady state flow the time scale you use should be irrelevant - the flow is the same in 1 nanosecond and 1 year.

But practically, larger timesteps...

Forum: CFX

February 25, 2011, 05:51

Replies: 6

Centrifugal pump convergence issue

Views: 2,467

Posted By ghorrocks

http://www.cfd-online.com/Wiki/Ansys_FAQ#My_steady...

http://www.cfd-online.com/Wiki/Ansys_FAQ#My_steady_state_solution_converges_for_a_while_but_stops_converging_before_reaching_my_convergence_criteria

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