Direct simulation methods for compressible inviscid ideal-gas flow
Direct simulation methods for compressible inviscid ideal-gas flow
复制标题
DOI：
10.1016/0021-9991(80)90107-2
复制
发表时间：
1980-02
影响因子：
4.1
通讯作者：
D. Pullin
中科院分区：
文献类型：
--
作者：
D. Pullin
提出了两种新颖的方案来计算理想流体的可压缩流动。一种方法是著名的离散粒子直接模拟蒙特卡罗方法的平衡模拟，用于处理非平衡理想气流。第二个源自对第一个方案中固有的模型惯性传输机制的分析处理。针对一般一维非定常流提出了该方法的说明。作为计算示例，对一维非定常活塞冲击问题进行了仿真，并将结果与精确解进行了比较。尽管目前的处理仅限于无粘性完美气体流动，但给出了一种方案的扩展以包括粘性和热传导效应，以及具有更一般的热力学状态关系的流体的处理的指示。
Two novel schemes are proposed for the calculation of compressible flow of an ideal fluid. One method is the equilibrium analog of the well-known discrete-particle direct simulation Monte Carlo method for the treatment of nonequilibrium ideal-gas flows. The second follows from an analytical treatment of the model inertial-transport mechanisms inherent in the first scheme. Accounts of the methods are presented for general one-dimensional unsteady flow. As a calculated example, the one-dimensional unsteady piston-shock problem is simulated and the results are compared to the exact solution. Although the present treatment is restricted to inviscid perfect-gas flow, indications are given of extensions of one scheme to include viscous and heat-conduction effects, and also to the treatment of fluids with more general thermodynamic state relations.