运动激波绕射过程中的粘性效应

ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1995, Vol. 16 ›› Issue (6): 688-691.

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VISCOUS EFFECT IN MOVING SHOCK DIFFRACTION OVER OBSTACLES

Cai Hanlong, Li Suxun

Beijing Institute of Aerodynamics,Beijing,100074

Received:1994-01-19 Revised:1994-09-09 Online:1995-12-25 Published:1995-12-25

Abstract

Abstract: A TVD scheme is used to solve the 2D unsteady full N S equation and the phenomenon of moving shock diffraction is studied. The surface pressure computed with viscous equations is more in agreement with experiment on a wedge corner. As a shock wave impinges on an obstacle, the reflex wave root is widened due to boundary layer interaction. Separating, reattachment and vortex induced by viscous effect in some region are shown in the paper. From the results, a numerical simulation with the full N S equation can get the characteristics of the shock wave interaction with the viscous effect.

Key words: TVD schemes, shock waves, viscous flow, Navier-Stokes equation

CLC Number:

Cai Hanlong;Li Suxun. VISCOUS EFFECT IN MOVING SHOCK DIFFRACTION OVER OBSTACLES[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 1995, 16(6): 688-691.

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VISCOUS EFFECT IN MOVING SHOCK DIFFRACTION OVER OBSTACLES

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