摘要
采用流固耦合方法进行点火源位置对飞机燃油箱燃烧状态与结构影响的仿真分析。通过燃烧仿真(部分预混模型)将燃油箱被引燃后的压力与温度实时地传递给燃油箱结构,计算其结构模型的变形与失效。仿真结果表明,不同的点火源位置对完全燃烧后的压力与温度数值几乎无影响,但点火源越接近燃油箱中间位置,燃烧过程中燃油箱内的压力与温度上升速率越快,造成燃油箱结构失效的时间越短。
The fluid-structure coupling method is used to simulate and analyze the influence of the ignition source position on the combustion state and structure of the aircraft fuel tank.Through combustion simulation(partial premix model),the pressure and temperature of the fuel tank after being ignited are transmitted to the fuel tank structure in real time,and the deformation and failure of the structure model are calculated.The simulation results show that different ignition source positions have almost no effect on the pressure and temperature values after complete combustion.However,the closer the ignition source is to the middle position of the fuel tank,the faster the pressure and temperature rise in the fuel tank during the combustion process,and the earlier the fuel tank structure fails.
作者
张帆
乔丽娜
ZHANG Fan;QIAO Lina(CEPREI,Guangzhou 511370,China;Guangdong Provincial Key Laboratory of Electronic Information Products Reliability Technslogy,Guangzhou 511370,China;Guangdong Provincial Research Center of Electronic Information Products Reliability and Environment Engineering Technology,Guangzhou 511370,China;Guangdong Industrial Robot Reliability Engineering Laboratory,Guangzhou 511370,China)
出处
《电子产品可靠性与环境试验》
2021年第S02期107-112,共6页
Electronic Product Reliability and Environmental Testing
关键词
燃油箱
燃烧仿真
流固耦合
fuel tank
combustion simulation
fluid-structure coupling
