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Forum: STAR-CCM+

March 16, 2022, 21:08

Replies: 3

Time-step size for coupled implicit simulations

Views: 1,883

Posted By LuckyTran

I recommend to read up on implicit...

I recommend to read up on implicit underrelaxation. There is an algebraic relation between Courant number, an implicit under-relaxation factor, and the physical timestep. For implicit solvers,...

Forum: STAR-CCM+

March 15, 2022, 15:26

Replies: 3

Time-step size for coupled implicit simulations

Views: 1,883

Posted By LuckyTran

Knowing that you can always lower your time-step...

Knowing that you can always lower your time-step size to make the solution more stable and more accurate, you almost never want to use a high number of inner iterations.

A Courant number of 50 is...

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