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Forum: Main CFD Forum

October 7, 2009, 11:58

Replies: 8

Will a multi-grid method damp out the high frequency physical wave?

Views: 2,607

Posted By jstults

Check out this site...

Check out this site (https://computation.llnl.gov/casc/people/henson/mgtut/welcome.html), especially slides 59 and 60 of the slides...

Forum: Main CFD Forum

October 2, 2009, 14:23

Replies: 8

Will a multi-grid method damp out the high frequency physical wave?

Views: 2,607

Posted By jstults

Do you run a sweep (or a couple) of your solver...

Do you run a sweep (or a couple) of your solver one last time on the fine grid to kill off the high-frequency errors? You should be converging to the same solution, multigrid just gets you there...

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