论文部分内容阅读
为了求解有蒸发、融化和机械剥蚀的大气水凝物粒子进入头激波层的运动(通称粒子云问题),常采用先给出驻点区气体流场,再计算每个粒子在其中运动的方法。本文对此采用了有相变的气固(和气液)两相流动的二流体模型,并用直线法作了求解,得到了气体和粒子在双向耦合和单向耦合下的流场,并给出了单向耦合的适用范围。最后对问题的表述、求解和结果作了讨论。
In order to solve the movement of atmospheric condensate particles with vaporization, melting and mechanical ablation into the head shock layer (commonly known as particle cloud problems), the gas flow field in the stagnation zone is first given and then the motion of each particle in it method. In this paper, a two-fluid model of gas-solid (and gas-liquid) two-phase flow with phase change is adopted and solved by the straight line method. The flow fields of the gas and particle under the bidirectional coupling and the unidirectional coupling are obtained. One-way coupling of the scope of application. Finally, the formulation, solution and result of the problem are discussed.