液体燃料爆炸抛撒和FAE形成过程的数值模拟

Numerical Simulation on the Process of Explosive Dispersal for Forming FAE Cloud

将液体燃料爆炸抛撒和FAE云雾形成全过程分 2个阶段处理。在抛撒初期 ,利用运动边界处理方法 ,建立一维单相流动模型来描述爆轰产物气体和燃料液体的运动。在其后过程 ,采用两相流模型描述燃料液体与周围大气相互作用过程。数值模拟得出的云雾外形变化与实验结果符合得较好。

The whole process of explosive dispersal and liquid air cloud formation was divided into two regimes. For the first regime, a one dimensional single phase model was presented to depict the motion of gaseous detonation products and liquid fuel.And a moving boundary method was used to treat the outer boundary of gaseous products. For the second regime, a two phase flow model was presented to depict the interaction of liquid and gas. The external shape of expanding fuel air cloud computed by numerical simulation is in good agreement with that of the measured.The variation of physical parameters in cloud is also shown by numerical simulation.