Criteria of computational grid generation for turbulence models taking into account laminar-turbulent transition

Criteria of structured and unstructured mesh generation for turbulence models taking into account laminar-turbulent transition were developed using flat plate boundary layer flow. It is shown the first near wall cell should be placed in the viscous sublayer in the transition region and stretching fa...

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Published in:Journal of physics. Conference series 2019-11, Vol.1400 (7), p.77047
Main Authors: Matyushenko, A A, Stabnikov, A S, Garbaruk, A V
Format: Article
Language:English
Subjects:
Aerodynamics
Boundary layer flow
Boundary layer transition
Computational fluid dynamics
Computational grids
Criteria
Finite element method
Flat plates
Grid generation (mathematics)
Mesh generation
Physics
Turbulence models
Viscous sublayers
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description Criteria of structured and unstructured mesh generation for turbulence models taking into account laminar-turbulent transition were developed using flat plate boundary layer flow. It is shown the first near wall cell should be placed in the viscous sublayer in the transition region and stretching factor should not exceed 1.4. For the unstructured meshes all the boundary layer should be covered by prismatic layers. The results of the prediction of the flow around a NLF(1)-0414F airfoil show that the use of relatively coarse meshes provide acceptable accuracy of the solution.
doi_str_mv 10.1088/1742-6596/1400/7/077047
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subjects Aerodynamics
Boundary layer flow
Boundary layer transition
Computational fluid dynamics
Computational grids
Criteria
Finite element method
Flat plates
Grid generation (mathematics)
Mesh generation
Physics
Turbulence models
Viscous sublayers
title Criteria of computational grid generation for turbulence models taking into account laminar-turbulent transition
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