爆轰波拐角传播三维数值模拟

Three dimensional numerical simulation of detonation wave propagation on corner-turning

为了研究爆轰波在拐角中的传播特性以及拐角爆轰低压流场现象,用LSDYNA 3D程序对三种常见的拐角装药的爆轰波传播特性进行了数值模拟,清晰显示了爆轰波因拐角处爆轰波传播面积的变化而产生的衰减 增长过程,讨论了侧向三通中爆速的变化情况,并得到了拐角处低压爆轰区的尺寸。

Corner charge is a common structure of rigid explosive circuit. In order to study the propagation characteristics of detonation wave at corner turning and the phenomenon of low-pressure flow field, program LSDYNA-3D was used to simulate three common types of corner-turning structures. The attenuating-growing process of pressure is shown clearly, which is the result of the variety of propagation area. The change of detonation velocity in side tee-joint is discussed, and moreover, the dimensions of low-pressure detonation zone are obtained.