Abstract
Formation and evolution of secondary streamwise vortices in the compressible transitional boundary layers over a flat plate are studied using a direct numerical simulation method with high-order accuracy and highly effective non-reflecting characteristic boundary conditions. Generation and development processes of the secondary streamwise vortices in the complicated transitional boundary flow are clearly analyzed based on the of numerical results, and the effects on the formation of the ring-like vortex that is vital to the boundary layer transition are explored. A new mechanism forming the ring-like vortex through the mutual effect of the primary and secondary streamwise vortices is expressed.
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Project supported by the National Natural Science Foundation of China (No. 10772082) and AFOSR (No.FA9550-08-1-0201)
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Chen, L., Tang, Db. & Liu, Cq. Numerical studies on evolution of secondary streamwise vortices in transitional boundary layers. Appl. Math. Mech.-Engl. Ed. 32, 449–458 (2011). https://doi.org/10.1007/s10483-011-1429-9
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DOI: https://doi.org/10.1007/s10483-011-1429-9