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

Forum: CFX March 27, 2011, 18:19

Replies: 11 unsteady flow with coherent structures Views: 2,160 Posted By ghorrocks Look for stuff under "Bluff body flow", examples... Look for stuff under "Bluff body flow", examples being the Ahmed body, and flow over various cylinders (square, round, rectangle etc). Should be lots of studies of this stuff in the literature.

Forum: CFX March 23, 2011, 17:41

Replies: 11 unsteady flow with coherent structures Views: 2,160 Posted By ghorrocks The flapping is not necessarily turbulent. It... The flapping is not necessarily turbulent. It could be laminar flow structures. If they are laminar structures then a turbulence model is inappropriate. If they are turbulent then it is still...

Forum: CFX March 22, 2011, 21:42

Replies: 11 unsteady flow with coherent structures Views: 2,160 Posted By ghorrocks By hard I mean difficult to get accurate results.... By hard I mean difficult to get accurate results. You can simply turn on a turbulence model and you will get a result, but it will probably be totally wrong. Validation and verification of a...

Forum: CFX March 22, 2011, 06:52

Replies: 11 unsteady flow with coherent structures Views: 2,160 Posted By ghorrocks In my experience natural convection flows with... In my experience natural convection flows with gross flow motion are hard to model with turbulence models. You may well have to directly model the flow, such as LES. But give it a go, you don't want...

Forum: CFX March 20, 2011, 21:06

Replies: 11 unsteady flow with coherent structures Views: 2,160 Posted By ghorrocks There are no general rules that I am aware of.... There are no general rules that I am aware of. The Re number regimes key changes take place for a cylinder are as good a guess as any for other shape. There has also been a lot of work on bluff...

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