Open AccessCriteria of computational grid generation for turbulence models taking into account laminar-turbulent transition
Author(s) -
Alexey Matyushenko,
A. S. Stabnikov,
А. В. Гарбарук
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/7/077047
Subject(s) - turbulence , laminar flow , airfoil , boundary layer , laminar turbulent transition , polygon mesh , mechanics , laminar sublayer , unstructured grid , flow separation , mesh generation , computational fluid dynamics , flow (mathematics) , materials science , physics , geometry , mathematics , thermodynamics , finite element method
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.