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Numerical Dissipation of Upwind in LES

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Old   October 23, 2011, 09:28
Default Numerical Dissipation of Upwind in LES
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Orxan Shibliyev
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Hi all,

I know upwind schemes cause numerical dissipation if advective form is used. But I don't see any numerical dissipation if divergence form is used instead. For example, in 2nd order upwind there is no 2nd derivative to be added to SGS viscosity.

What you think?

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Old   October 23, 2011, 14:02
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cfdnewbie
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Dear Orxan,
what method are you talking about? FD?
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Old   October 24, 2011, 06:59
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Orxan Shibliyev
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Quote:
Originally Posted by cfdnewbie View Post
Dear Orxan,
what method are you talking about? FD?
I am using Finite Volume. To write them in a conservative form I use divergence form of convective term.
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