Experimental modeling of three-dimensional modes of hypersonic flow past cylindrically-blunted bodies

Three dimensional vortex modes of hypersonic steady-state flow on the blunted bodies leading age

“…[1][2][3][4][5] One can distinguish three basic mechanisms representing physical reasons for the development of such structures: I) external excitation of vortices induced by spatial inhomogeneity of the free stream or boundary conditions on the body; II) internal excitation caused by the development of transverse flow instability in the neighborhood of the leading stagnation line (Taylor-Görtler instability, for example) 2 ; III) self-generation of spanperiodic structures under homogeneous external conditions supported by a strong interaction between the bow shock and the vortex flow in the compressed layer. [3][4][5] The fact that vortex structures can appear as a result of external impact is theoretically understood and in the present study the first mechanism is considered only as one way of initial perturbation of the primary (plane) flow mode.…”