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Journal of Shanghai University >

2021 , Vol. 27 >Issue 2: 307 - 324

DOI: https://doi.org/10.12066/j.issn.1007-2861.2147

Research Articles

Numerical simulation of the supersonic flow/jet flow and their interaction at different flight altitudes

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  • 1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai University, Shanghai 200072, China
    2. State Key Laboratory of High Temperature Gas Dynamics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
    3. School of Engineering Science, University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2019-01-11

  Online published: 2019-05-30

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Abstract

The two-dimensional Navier-Stokes equations were solved using high-precision schemes, and the basic structure of the flow field in the supersonic flow and jet flow at different flight altitudes was studied. The three-order Runge-Kutta scheme was adopted in the time-marching scheme. The five-order weighted essentially non-oscillatory (WENO) and the six-order central difference schemes were used to discretize the convection term and viscous term, respectively. The parallel computation was performed using MPI non-blocking communication. The basic structural characteristics of backward-facing step flow and jet flow under backward-facing steps at different flight altitudes were studied. Furthermore, by combining the two flows, the flow field structure of the interaction between the supersonic flow and jet flow was studied. The supersonic flow above the backward-facing step was changed to simulate the environment of different flight altitudes, and the environment affected structures such as vortices, shear layers, and shock waves in the flow field. It was observed that after the interaction between the supersonic flow and jet flow, a recirculation zone was generated near the back step, and the presence of supersonic flow affected the structures of the jet flow.

Key words： backward-facing step; jet flow; shear layer; numerical simulation

Cite this article

DENG Fang, HAN Guilai, LIU Meikuan, DING Jue, WENG Peifen, JIANG Zonglin . Numerical simulation of the supersonic flow/jet flow and their interaction at different flight altitudes[J]. Journal of Shanghai University, 2021 , 27(2) : 307 -324 . DOI: 10.12066/j.issn.1007-2861.2147

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