论文部分内容阅读
为了拓宽超声速化学非平衡流的计算方法,将2种动力学格式(KFVS格式和KWPS格式)推广到基于非结构网格的超声速化学非平衡流场的数值模拟中。采用线性重构技术和Venkatarishnan限制器求解单元界面处的物理量,并结合动力学格式求解对流通量。采用该数值方法模拟经典的球头激波诱导燃烧和高超声速球锥非平衡流场算例。数值模拟与文献的对比结果表明动力学格式在超声速化学非平衡流中能够精确地捕捉到激波、燃烧波等物理现象,具有高精度高分辨率特性,为计算超声速化学非平衡流提供了一种新方法。
In order to broaden the calculation method of supersonic chemical unbalanced flow, two kinds of kinetic schemes (KFVS and KWPS) are generalized to the numerical simulation of supersonic chemical unbalanced flow field based on unstructured grids. The linear reconstruction technique and the Venkatarishnan limiter are used to solve the physical quantities at the cell interface, and the convection fluxes are solved in conjunction with the kinetic format. This numerical method is used to simulate the classical example of the induced shock and hypersonic spheroidal non-equilibrium flow field in a ball-head shock. The comparison between numerical simulation and literature shows that the kinetic format can accurately capture the physical phenomena such as shock wave and combustion wave in supersonic chemical non-equilibrium flow, and has the characteristics of high precision and high resolution. It provides a new method for calculating supersonic chemical non-equilibrium flow New method