Deng Fang  , Han Guilai

DOI Number XXX-YYY-ZZZ

Conference Number HiSST 2018_690803

Abstract

In this paper,the Navier-Stokes equations are solved in high-order accurate scheme to study the basic structure and regularity of the flow field in the interaction between supersonic jet and co-directional supersonic flow. The five order WENO scheme and the six order central difference scheme are used to discretize the convection term and viscous term respectively, and the time marching scheme is adopted in the three order Runge-Kutta scheme, and the parallel computation is performed by using MPI non blocking communication. A double backward-facing steps model constructed by ourselves is presented to study the interaction between the jet / supersonic flow shear layers . We find that the two shear layers interact to produce a jet, which we call the secondary jet. The secondary jet generated by the action has the characteristic of pulse and so on, focusing on the periodicity of infrasonic jet..

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In Categories: High-Speed Aerodynamics and Aerothermodynamics, HiSST 2018, Hypersonic Aerodynamics, Turbulence Modeling and Simulation
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