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September 21, 2010, 07:11
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Turbulence Numerics
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#1 |
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Senior Member
Join Date: Jan 2010
Location: Germany
Posts: 268
Rep Power: 17  |
Hello everyone,
Can anyone explain for me the Turbulence Numerics High Resolution Scheme. thx |
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September 21, 2010, 18:21
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#2 |
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Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
By default CFX uses upwinding for the spatial differencing in the turbulence equations. The HR scheme uses a second order scheme and is potentially more accurate, but harder to converge.
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September 22, 2010, 22:35
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Hi
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#3 |
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Member
Dynampally Pavitran
Join Date: Mar 2010
Location: India
Posts: 74
Rep Power: 16 |
It is not always second order as it depends on the local solution field, it reduces to first order near discontinuities.
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September 23, 2010, 02:37
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#4 |
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Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,703
Rep Power: 143 |
Very good, just checking somebody was paying attention
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September 24, 2010, 02:41
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#5 |
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Senior Member
Join Date: Jan 2010
Location: Germany
Posts: 268
Rep Power: 17 |
So, i started another case and unfortunately it is not the problem related to numeric. I think something goes wrong the partitioning of the mesh with few than 10 K cells.
tests are carried out... |
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