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Pré-Publication, Document De Travail Année : 2018

Testing a one-closure equation turbulence model in neutral boundary layers

Résumé

We test the performances of an incompressible turbulence Reynolds-Averaged Navier-Stokes one-closure equation model in a boundary layer, which requires the determination of the mixing length. A series of direct numerical simulation are performed, with flat and non trivial topographies, to obtain by interpolation a generic formula = (Re , z), Re being the frictional Reynolds number, and z the distance to the wall. Numerical simulations are carried out at high Reynolds numbers with this turbulence model, in order to discuss its ability to properly reproduce the standard profiles observed in neutral boundary layers, and to assess its advantages, its disadvantages and its limits. In an appendix, we achieve the mathematical analysis of the model.
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Dates et versions

hal-01875464 , version 1 (17-09-2018)
hal-01875464 , version 2 (27-01-2020)
hal-01875464 , version 3 (02-03-2020)
hal-01875464 , version 4 (14-10-2020)

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  • HAL Id : hal-01875464 , version 1

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Roger Lewandowski, Benoît Pinier, Etienne Mémin, Pranav Chandramouli. Testing a one-closure equation turbulence model in neutral boundary layers. 2018. ⟨hal-01875464v1⟩
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