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Forum: Main CFD Forum

April 29, 2009, 15:32

Replies: 6

CFL number for Navier-Stokes (Infinite? How large?)

Views: 4,865

Posted By jed

It is often okay to exceed CFL in some parts of...

It is often okay to exceed CFL in some parts of the domain. Remember that it is common that some terms need to be treated implicitly regardless (e.g. pressure in incompressible flow, chemistry in...

Forum: Main CFD Forum

April 29, 2009, 08:03

Replies: 6

CFL number for Navier-Stokes (Infinite? How large?)

Views: 4,865

Posted By jed

Some implicit schemes are unconditionally stable....

Some implicit schemes are unconditionally stable. Stability is necessary for convergence to the exact solution, but is not sufficient. For convergence, you also need the scheme to be consistent. ...

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