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Forum: CFX

August 25, 2010, 17:48

Replies: 9

Adaptive Timestepping: Possible Glitch?

Views: 2,079

Posted By ghorrocks

Not quite. For most CFD Courant number is not...

Not quite. For most CFD Courant number is not important as you just get the time step size which gives temporal accuracy you require. There are special cases where Courant number is important -...

Forum: CFX

August 24, 2010, 19:04

Replies: 9

Adaptive Timestepping: Possible Glitch?

Views: 2,079

Posted By ghorrocks

To misquote the Young Ones.... "If I had a cent...

To misquote the Young Ones.... "If I had a cent every time I had to do that, I would have $5.43.". Although going off my current post count it would be $18.91.

This is probably way tighter than...

Forum: CFX

August 24, 2010, 18:47

Replies: 9

Adaptive Timestepping: Possible Glitch?

Views: 2,079

Posted By ghorrocks

Yes, smaller timesteps should allow for easier...

Yes, smaller timesteps should allow for easier convergence, but only to a certain extent - with timesteps as tiny as you are running then numeric round-off and noise will cloud the whole thing and...

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