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September 8, 2019, 08:56 |
dns in a round pipe
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#1 |
Member
EM
Join Date: Sep 2019
Posts: 59
Rep Power: 7 |
hello,
i am looking for a shortcut to my search for a numerical method for dns in a straight round pipe as papers go back decades. low order fd methods (ie 4th order or less) are out as they are only good for very low Res. there is also the problem of the centreline singularity. fourier in the homogeneous direction is standard and so for the azimuthal. so, what would be the best (yes, it is vague) method for higher Re pipe dns and is suitable for gpu acceleration. has anyone any ideas (and references)? -- |
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September 8, 2019, 11:06 |
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#2 | |
Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,839
Rep Power: 73 |
Quote:
This flow problem is largely presented in the literature (just google about) and is one of the problems considered also in the well-known AGARD report https://www.google.com/url?sa=t&rct=...FApPb9USUQbkCY Generally a pseudo-spectral formulation is used, a radial spatial discretization is used. The problem of the singularity at r=0 is only a false problem. |
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dns, numerical methods |
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