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Thermophysics and Aeromechanics

2007 year, number 4

Formation of coherent structures at interaction between an impact jet and a flow reflected from an obstacle

V.G. Prikhodko, I.V. Yarygin, And V.N. Yarygin
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Pages: 631–632

Abstract

The results of experimental research on interaction between an axisymmetric underexpanded jet and obstacles of various shapes (the plane one and in the form of a cylindrical cavity) are presented. It is found that a cavity provides formation of a reverse flow, whose interaction with a jet causes formation of the vortex spiral structures.