液体燃料爆炸抛撒和云雾形成全过程的数值研究

摘要

The numerical simulation on the forming of fuel air cloud was presented in this paper.Because of the complexity,the dispersal process was divided into two regimes.For the near-field regime,a one-dimensional uniform phase model was proposed to depict the motion of detonation product and liquid fuel ring,by using a method of moving boundary to treat moving outer boundary.For the far-field regime,the expanding process of fuel air cloud was simulated by using multi-phase flow model.The profiles of physical parameters in expanding fuel air cloud were predicted by numerical simulation,and the shape of expanding fuel air cloud computed was in good agreement with the experimental data.%对燃料空气云雾形成过程进行数值模拟。因过程的复杂性分近场与远场两个阶段处理。对近场阶段，利用运动边界处理方法，建立一维气相流动模型和液相运动模型。对远场阶段，采用多相流模型描述云雾膨胀运动过程。将两过程耦合，对抛撒全过程编制程序。数值预测给出了云雾区内的重要物理参数变化，计算的云雾外形变化曲线与实验结果具有较好的一致性。