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Showing results 1 to 5 of 5 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX August 27, 2010, 06:44

Replies: 11 Difference in result due to time step Views: 1,869 Posted By ghorrocks This is a general principle learnt from doing CFD... This is a general principle learnt from doing CFD for decades. I can't give you a specific example for it. Just trust me. Or even better, fiddle with the time step and see what happens - then you...

Forum: CFX August 26, 2010, 06:44

Replies: 11 Difference in result due to time step Views: 1,869 Posted By ghorrocks Usually this is because your time step is too... Usually this is because your time step is too small. Your time step needs to be big enough to "average" out the turbulent fluctuations into a mean flow. To do this, your time step needs to be larger...

Forum: CFX August 24, 2010, 18:50

Replies: 11 Difference in result due to time step Views: 1,869 Posted By ghorrocks Do the tutorials, read the documentation. It is... Do the tutorials, read the documentation. It is all discussed there.

Forum: CFX August 24, 2010, 06:31

Replies: 11 Difference in result due to time step Views: 1,869 Posted By ghorrocks It should not make a difference. If the time step... It should not make a difference. If the time step gets small enough the Reynolds Averaging gets unreliable, but as long as you are larger than a certain amount it should not make any difference.

Forum: CFX August 23, 2010, 07:37

Replies: 11 Difference in result due to time step Views: 1,869 Posted By ghorrocks Are you asking when you change the time step size... Are you asking when you change the time step size in a steady state simulation why are the results different?

Showing results 1 to 5 of 5

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