Research on distance influenced by a jet engine based on improved DES method and SA model

doi:10.16265/j.cnki.issn1003-3033.2021.04.011

Abstract

Abstract: In order to evaluate influence range and degree of take-off aircraft engine jet and analyze feasibility of rear traverse scheme, influence distance of take-off aircraft engine jet under rear traverse mode was numerically simulated based on SA turbulence model combined with DES method. A high subsonic nozzle model was selected for numerical simulation, and simulation results were compared with reference values in literature to verify correctness and effectiveness of method. On this basis, combined with actual boundary conditions of B737-800 engine, numerical simulation of jet effect of engine was carried out, and influence distance of jet of B737-800 engine was obtained, and accuracy was verified by comparing with aircraft characteristic manual. The results show that influence distance of jet flow at 44, 22 and 16 m/s can be obtained by numerical simulation of B737-800 engine with improved DES method combined with SA model.

Key words: detached-eddy simulation (DES) method, Spalart-Allmaras(SA)turbulence model, aeroengine, influence distance of jet, rear traverse scheme

CLC Number:

X949

HE Xin, HU Dengfeng, LIU Cheng, MA Yilong. Research on distance influenced by a jet engine based on improved DES method and SA model[J]. China Safety Science Journal, 2021, 31(4): 81-87.

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