摘要
研究飞行员高速气流吹袭的损伤机理,应用尺度适应模型对人椅系统外流场进行数值模拟.在马赫数为0.6,迎角为-90°~90°条件下的数值计算结果与风洞试验结果吻合较好.对不同马赫数、不同迎角的无防护状态下的人椅系统进行数值模拟,研究发现高速气流吹袭下飞行员面颈部、胸腹部、上臂内侧、小腿迎风侧压力较大;增大人椅系统的迎角可以改善飞行员身体各部分的受力情况.
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 that high pressure zones load on pilot are face, thorax, abdomen increases pressure distribution on each part can improve. Injury of pilot during high speed ejection is investigated. It shows inside of upper arm and windward side of calves. As pitch angle
出处
《计算物理》
CSCD
北大核心
2016年第2期170-176,共7页
Chinese Journal of Computational Physics
关键词
人椅系统
气流吹袭
数值模拟
尺度适应模型
损伤分析
seat occupant system
windblast
numerical simulation
scale adaptive simulation
injury analysis
