CFD Analysis on Pilot's Injury by Windblast at High Speed

Abstract

Abstract: To investigate injury of windblast at high speed,flow around a seat occupant is simulated in a scale adaptive simulation turbulence model. Numerical simulations agree well with wind tunnel experiments at Mach number 0.6 and angles of attack from -90° to 90°. Flow around seat occupant without protection is simulated. Injury of pilot during high speed ejection is investigated. It shows that high pressure zones load on pilot are face,thorax,abdomen,inside of upper arm and windward side of calves. As pitch angle increases pressure distribution on each part can improve.

Key words: seat occupant system, windblast, numerical simulation, scale adaptive simulation, injury analysis

CLC Number:

V242.2

ZHANG Peng, TIAN Jialin, HAN Lujia, LIU jie. CFD Analysis on Pilot's Injury by Windblast at High Speed[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2016, 33(2): 170-176.

References

[1] 张云然,吴桂荣. 高速气流吹袭力学效应与防护[M]. 北京:国防工业出版社, 2010:4.
[2] ROCK S G,HABCHI S D,MARQUETTE T J. Numerical simulation of controllable propulsion for advanced escape systems[C]//The 15th AIAA Applied Aerodynamics Conference. Atlanta:AIAA. 1997:325-333.
[3] 宋保银,张中钢,牟杰,姚秋萍. 人椅系统绕流场的数值模拟[J]. 航空动力学学报, 2008,23(10):1859-1867.
[4] 魏涛,张大林. 弹射救生高速气流吹袭防护气动特性数值模拟[J]. 应用力学学报, 2009,26(4):767-770.
[5] 魏涛,张大林. 人椅系统肢体气动特性数值模拟[J]. 计算力学学报, 2010,27(3):556-561.
[6] 丁春全,姜南,范群. 人/椅系统外流场的数值模拟[J]. 舰船电子工程, 2011,10:100-102.
[7] MENTER F R,EGOROV Y. A scale-adaptive simulation model using two-equation models[J]. AIAA Paper,2005,1095:1-12.
[8] MENTER F R. Two-equation eddy-viscosity turbulence models for engineering applications[J]. AIAA Journal,1994,32(8):1598-1605.
[9] YANG Z,GU Z,TU J,et al. Numerical analysis and passive control of a car side window buffeting noise based on scaleadaptive simulation[J]. Applied Acoustics,2014,79:23-34.
[10] SHUR M L,SPALART P R,STRELETS M K,et al. A hybrid RANS-LES approach with delayed-DES and wall-modelled LES capabilities[J]. International Journal of Heat and Fluid Flow,2008,29(6):1638-1649.
[11] 李彬,邓有奇,唐静,吕鸿鹰. 基于非结构混合网格的离散伴随优化方法[J]. 航空学报, 2014,35(3):674-686.
[12] LIU T,MA B. Suitability of low-order numerical schemes in large eddy simulations[J]. Chinese J Comput Phys,2014,31(3):307-313.
[13] JIA H,SUN Q,LIU J. A corrected panel method for static aeroealasticity[J]. Chinese J Comput Phys,2014, 31(1):21-26.
[14] MENTER F R,EGOROV Y. The scale-adaptive simulation method for unsteady turbulent flow predictions. Part 1:Theory and model description[J]. Flow,Turbulence and Combustion,2010,85(1):113-138.
[15] EGOROV Y,MENTER F R,LECHNER R. The scale-adaptive simulation method for unsteady turbulent flow predictions. Part 2:Application to complex flows[J]. Flow,Turbulence and Combustion,2010,85(1):139-165.