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-   -   How to choose number of non-linear iterations (https://www.cfd-online.com/Forums/numeca/135725-how-choose-number-non-linear-iterations.html)

nollnoll May 16, 2014 21:10

How to choose number of non-linear iterations
 
Hi,

Making some progress with setting up a head wave cases, now trying to incorporate adaptive grid to capture surface in a cell-economical way.

My question is :
Is there a way to calculate or estimate number of non-linear iterations I need to allow for convergence? (or maybe how few I can get away with)

The manual suggests 20 iterations for wave cases, but I see little or no difference to 10 iterations in forces etc. How do I know if I am safe?

The solution need to be able to distinguish between hull candidates, absolute precision is of lesser importance.

Kind regards

Elastic Sparrow


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