摘要
研究二维爆炸流场中空气冲击波在复杂坑道内传播的机制。对多物质流采用Eu ler方法和NND格式,对爆轰产物采用JWL状态方程;自行编制二维爆炸模拟计算程序。试验结果与数值模拟基本相符,反映了爆炸冲击波在坑道内传播的详细过程。结果表明:采用穿廊式出入口,可以削弱进入坑道内55%的空气冲击波强度;采用穿廊加扩散室可以削弱进入坑道75%的冲击波强度。
Numerical simulations were carried out study the mechanism of blast shock wave generation and propagation in complex tunnel. Euler equations were solved by the NND scheme in order to capture the blast shock wave propagation and reflection in the tunnel. Two dimension numerical codes were made by using the JWL equation of state for product. Numerical results were in good agreement with experiments. It is shown that the magnitude of blast shock wave can decrease 55% by using covered way, and the magnitude can decrease 75% by using covered way in combination with diffusion chamber.
出处
《爆破器材》
CAS
2008年第5期1-4,共4页
Explosive Materials
关键词
爆炸力学
数值模拟
爆炸冲击波
复杂坑道
mechanics of explosion, numerical simulation, blast shock wave, complex tunnel
