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Search: Posts Made By: ghorrocks
Forum: CFX February 28, 2014, 05:29
Replies: 23
Views: 2,649
Posted By ghorrocks
Your results are already pretty close so you know...

Your results are already pretty close so you know you are not far wrong. If you expect that you can get your results closer to the DNS line then you need to do a careful validation of mesh size,...
Forum: CFX February 28, 2014, 04:45
Replies: 23
Views: 2,649
Posted By ghorrocks
Why do you say DNS and RANS should match each...

Why do you say DNS and RANS should match each other? They are very different approaches, so isn't some variation to be expected?
Forum: CFX January 31, 2014, 04:43
Replies: 23
Views: 2,649
Posted By ghorrocks
I suspect you cannot do hybrid variables on...

I suspect you cannot do hybrid variables on arbitrary lines, only the original mesh objects. So I suspect you are seeing the conservative values, even when you select hybrid.
Forum: CFX January 30, 2014, 17:42
Replies: 23
Views: 2,649
Posted By ghorrocks
What location object are you exporting? Are you...

What location object are you exporting? Are you using a cut or sample approach?
Forum: CFX January 29, 2014, 06:11
Replies: 23
Views: 2,649
Posted By ghorrocks
Hybrid and conservative only changes the control...

Hybrid and conservative only changes the control volume adjacent to the wall. Internal nodes are the same.

Prism/hex/inflation layers on the wall are not essential for all types of flow. Low...
Forum: CFX January 28, 2014, 17:56
Replies: 23
Views: 2,649
Posted By ghorrocks
It does. See FAQ:...

It does. See FAQ: http://www.cfd-online.com/Wiki/Ansys_FAQ#Why_do_I_see_a_non-zero_velocity_at_the_walls.3F
Forum: CFX January 28, 2014, 06:35
Replies: 23
Views: 2,649
Posted By ghorrocks
I think Alex might be on the right track. Are you...

I think Alex might be on the right track. Are you sure you are correctly handling the hybrid and conservative values? For instance, are you aware that the control volume which contains the wall has...
Forum: CFX January 27, 2014, 18:07
Replies: 23
Views: 2,649
Posted By ghorrocks
Have you read the discussion in the documentation...

Have you read the discussion in the documentation on y+? It describes the calculation of y+ and some things to be careful of.
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