Numerical study on the influence of helium injected into a compressible boundary layer on the Görtler instability
S.O. Morozov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: compressible boundary layer, theory of linear stability, Görtler vortex, direct numerical simulation
Abstract
The effect of light gas injection on the linear stage of Görtler vortex development in a compressible boundary layer was studied. The problem is solved in the framework of linear stability theory and using the direct numerical simulation for Navier-Stokes equations. The data on the vortex growth and vortex profiles are in agreement for these two methods. It was demonstrated that helium injection into a compressible boundary layer upon a convex surface can reduce the growth rate for Görtler vortices.
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