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Forum: CFX

December 12, 2012, 05:22

Replies: 9

A simple problem about Adaptive Time steps

Views: 3,787

Posted By ghorrocks

Welcome to CFD :), this is why people use super...

Welcome to CFD :), this is why people use super computers for CFD.

Did you do a sensitivity study of did you just try 1e-4? Unless you actually determine what you need you are guessing. And you...

Forum: CFX

December 11, 2012, 17:01

Replies: 9

A simple problem about Adaptive Time steps

Views: 3,787

Posted By ghorrocks

The general recommendation is to use adaptive...

The general recommendation is to use adaptive time stepping homing in on 3-5 coeff loops per iteration. Courant number adaptive time steps are not generally recommended. And as suspected your...

Forum: CFX

December 11, 2012, 03:57

Replies: 9

A simple problem about Adaptive Time steps

Views: 3,787

Posted By ghorrocks

Assuming you are using adaptive time steps homing...

Assuming you are using adaptive time steps homing into 3-5 coeff loops per iteration (which is the general recommendation), then if it keeps making the time step size smaller and smaller you have...

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