Nonlinear Analysis of Flow past a Blunt Ablator, Part I: Combined Numerical Model

作者：Huang Hai Ming^*; Xu Xiao Liang; Bai Guang Hui; Jiao Wen

来源：International Journal of Nonlinear Sciences and Numerical Simulation, 2010, 11(7): 535-544.

• ablation
• discrete vortex method
• denudation
• particle trajectory model

The ablation is a nonlinear process coupled with convection, heat transfer, mass transfer and chemical reaction. This paper suggests a combined numerical model to solve the flow of gaseous mixtures past a blunt ablator under high temperature and high pressure. In this model, the vortex method is adopted to simulate the flow field and pressure distribution on the blunt surface; the three-equation model, which takes into account both diffusion and thermochemical mechanisms, is used to estimate the mass loss. Furthermore, a simplified model is put forward for simulating the denudation loss, and a particle trajectory model is applied for solving particles motion. The established model provides necessary data for relative chaos identification.

• 出版日期2010-7
• 单位哈尔滨工业大学; 中国地震局工程力学研究所; 北京交通大学