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Search: Posts Made By: vinerm
Forum: FLUENT April 12, 2020, 16:28
Replies: 7
Views: 358
Posted By vinerm
Turbulent Heat Flux

You are correct, in similarity with Reynolds stress, turbulent heat flux uses temperature fluctuation and not it's mean. It's only if turbulent diffusivity is used that the gradient of mean makes...
Forum: FLUENT April 11, 2020, 13:12
Replies: 7
Views: 358
Posted By vinerm
Turbulent Heat Flux

For RANS, you can determine u' using k,


u' = \sqrt\frac{2k}{3}


Whether LES or RANS, turbulent heat flux is product of u' with mean T and not T'. Another method of determining turbulent heat...
Forum: FLUENT April 7, 2020, 16:42
Replies: 7
Views: 358
Posted By vinerm
Turbulent Heat Flux

For LES, this definition makes sense but k-\omega has neither of these fields available. So, you have to define it either using k or subtract heat flux due to molecular diffusion from total to fetch...
Forum: FLUENT April 6, 2020, 07:09
Replies: 7
Views: 358
Posted By vinerm
Turbulent Heat Flux

Do you want this at a boundary or at interior faces of the mesh?
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