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June 6, 2012, 07:51 |
Dns
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#1 |
Senior Member
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Hello
This discussion is about DNS and is not pertaining to any particular tool. Usually, DNS is carried out in spectral space, especially when it comes to homogeneous turbulence. However, I would like to have your opinion about the "Implications that could arise out of carrying out DNS in physical space". Regards, Vinerm Andrews |
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June 6, 2012, 08:21 |
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#2 | |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,849
Rep Power: 73 |
Quote:
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June 6, 2012, 15:30 |
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#3 | |
Senior Member
cfdnewbie
Join Date: Mar 2010
Posts: 557
Rep Power: 20 |
Quote:
As long as you can guarantee that you are doing a real DNS with all scales resolved, there's no difference at all. Just note that with non-spectral methods you will probably need more DOF to be numerics-free than with a spectral approach! |
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June 6, 2012, 17:55 |
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#5 |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,849
Rep Power: 73 |
just to add that DNS performed in physical space is practically the only way to face non-simple geometry
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June 10, 2012, 04:47 |
Homogeneous and Non-homogeneous
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#6 |
Senior Member
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Hello Everyone
Thank you all for your replies. As far as I have been able to resolve by studying papers and books, spectral methods have issue in resolving non-homogeneous turbulence but whether geometry is complex or not does not really matter. However, I am still not even a beginner with DNS. I have just read a few papers about it. So, thank you all. Regards, Vinerm Andrews |
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Tags |
dns, turbulence |
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