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Forum: CFX

November 12, 2012, 04:54

Replies: 16

Courant Number

Views: 27,368

Posted By ghorrocks

The CFX coupled solver should solve to a defined...

The CFX coupled solver should solve to a defined convergence level much faster than the SIMPLE based methods, but each coeff loop will take much longer. In the end you generally get steady state...

Forum: CFX

November 11, 2012, 21:54

Replies: 16

Courant Number

Views: 27,368

Posted By ghorrocks

If you are using Fluent then my comments are not...

If you are using Fluent then my comments are not applicable. SIMPLE is very different to the coupled solver in CFX and requires a different approach. You might get similar behaviour using the coupled...

Forum: CFX

November 11, 2012, 18:51

Replies: 16

Courant Number

Views: 27,368

Posted By ghorrocks

It is the recommended approach in the CFX...

It is the recommended approach in the CFX documentation. I have been preaching it for many years and it has never let me down in my modelling using it. In a very small number of simulations I have...

Forum: CFX

August 15, 2012, 18:44

Replies: 16

Courant Number

Views: 27,368

Posted By ghorrocks

Explicit methods take gradients at the current...

Explicit methods take gradients at the current time step and extraplote that forward in time to get the next time step. So the fundamental solution procedure is algebraic. This approach is limited to...

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