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September 14, 2007, 10:41 |
Curvature Correction & Reattachment Mod.
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#1 |
Guest
Posts: n/a
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Hello,
CFX 11.0 includes the SST Curvature Correction and SST Reattachment Modification as beta features. Can anyone give detailed information on what these options are and how they work ? Or alternatively does anyone know where I can learn more on this subject (published paper / book) ? Also, how can I use these options in PRE ? Shouldn't they appear in the Expert Parameters section after I enable beta features ? Thanks, your help is always appreciated ! Felix |
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September 18, 2007, 10:36 |
Re: Curvature Correction & Reattachment Mod.
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#2 |
Guest
Posts: n/a
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Hi Felix,
as far as the SST Curvature Correction is concerned I can tell from my own experience that this beta feature is not really implemented yet. I had only a vanishing influence on my test case with the CFX SSTCC activated or deactivated. In a first test I found that the SST curvature correction proposed by Hellsten (AIAA-98-2554) gave much better results. But it also lead to higher residuals. When you find out anything else please let me know. Take care, Andreas |
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July 14, 2010, 08:51 |
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#3 |
New Member
Join Date: May 2009
Posts: 24
Rep Power: 17 |
Hi Jeromin,
with which code did you test the cc-model proposed by Hellsten? It wasn't CFX, right? Are you using the CC-model in version 12.1, CFX? HAve you varied the CScale-coefficient. Would be interesting to know if that impacts your flow as well. It had quite a big influence on my results - but my experience is limited to version 12.0!!! I will analyze it now in 12.1. Regards. |
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July 14, 2010, 09:53 |
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#4 |
Senior Member
Join Date: Apr 2009
Posts: 531
Rep Power: 21 |
Curvature Correction would only make a difference for strongly swirling flows. In my experience SST + CC gave results similar to a Reynolds Stress model, but without the added expense and with the wall treatment benefits that come with SST. The option appears in Pre on the Domain > Fluid Models panel, under Advanced Control below where you pick your turbulence model (not sure if it's there in 11.0 though). I haven't used the reattachment modification before.
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December 18, 2010, 16:28 |
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#5 |
New Member
dean
Join Date: Dec 2010
Posts: 4
Rep Power: 16 |
Hi everyone, I was wondering if anyone had the source code for the curvature correction which i can eyeball and implement, I would really appreciate this please. Could you send/forward to ourdean@gmail.com
Cheers |
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December 19, 2010, 17:04 |
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#6 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,871
Rep Power: 144 |
The source code is not available.
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