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March 22, 2001, 06:07
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Turbulent eddy diffusivity for mixing??
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#1 |
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Guest
Posts: n/a
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Hi,
In turbulent mixing, an eddy diffusivity is usually used to study the mixing. But when the flow is laminar and unsteady, instabilities present in the system,which can also be used for mixing. In other words, there are also eddies in laminar flow. My question is if there is something like eddy diffusivity that can be used to describe the mixing in laminar usteady flow? if so, how to define it? say, I know the flow velocity field. Many thanks! Ray |
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November 5, 2020, 09:18
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#2 |
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New Member
Tian Jin
Join Date: Aug 2020
Posts: 10
Rep Power: 6  |
Dear Ray,
Have you ever solved this problem? I also have the same question. Tian Jin |
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November 5, 2020, 11:28
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#3 | |
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Senior Member
Filippo Maria Denaro
Join Date: Jul 2010
Posts: 6,896
Rep Power: 73 |
Quote:
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November 5, 2020, 12:57
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#4 |
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New Member
Tian Jin
Join Date: Aug 2020
Posts: 10
Rep Power: 6 |
Do you mean that when we use the dynamic SGS model in OpenFoam, we can apply it to both eddy viscosity and eddy diffusivity?
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