Generalized wall function and its application to compressible turbulent boundary layer over a flat plate

Wall function boundary conditions including the effects of compressibility and heat transfer are improved for compressible turbulent boundary flows. Generalized wall function formulation at zero-pressure gradient is proposed based on coupled velocity and temperature profiles in the entire near-wall...

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Bibliographic Details
Published in:Journal of physics. Conference series 2017-04, Vol.822 (1), p.12017
Main Authors: Liu, J, Wu, S P
Format: Article
Language:English
Subjects:
Boundary conditions
Compressibility effects
Compressible boundary layer
Computational fluid dynamics
Flat plates
Fluid flow
Physics
Shear stress
Temperature profiles
Turbulence models
Turbulent boundary layer
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Summary:Wall function boundary conditions including the effects of compressibility and heat transfer are improved for compressible turbulent boundary flows. Generalized wall function formulation at zero-pressure gradient is proposed based on coupled velocity and temperature profiles in the entire near-wall region. The parameters in the generalized wall function are well revised. The proposed boundary conditions are integrated into Navier-Stokes computational fluid dynamics code that includes the shear stress transport turbulence model. Numerical results are presented for a compressible boundary layer over a flat plate at zero-pressure gradient. Compared with experimental data, the computational results show that the generalized wall function reduces the first grid spacing in the directed normal to the wall and proves the feasibility and effectivity of the generalized wall function method.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/822/1/012017