Model Coefficient Revision on Supersonic Turbulent Pulse for Aero-Optic Effect

doi:10.19596/j.cnki.1001-246x.7603

Abstract

Abstract: Aero-optic effect is investigated in supersonic/hypersonic flow. Flat plate, ramp and cave model in supersonic/hypersonic flow condition are studied with large eddy simulation (LES). Turbulent density pulse is predicted to verify coefficient of density pulse model-mixing length (ML) model. It indicates that LES method simulates turbulent density pulse well in flat plate boundary layer flow, oblique shock wave/boundary layer interaction and strong separation flow. Density pulse data obtained by LES is used to verify ML coefficient and set a quantitative result. The modified ML was used to predict aero-optical effect on missile successfully.

Key words: aero-optic, turbulence, supersonic boundary layer, separation flow, large eddy simulation

CLC Number:

PAN Honglu, LI Junhong, CHENG Xiaoli, MA Handong. Model Coefficient Revision on Supersonic Turbulent Pulse for Aero-Optic Effect[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2018, 35(2): 194-204.

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