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摘要
When a cylinder specimen lies in the gaseous mixture under high temperature and high pressure, the ablation and the denudation may appear on the cylinder surface, which will lead to the mass loss and shape alteration. A combined model is developed for solving the mass loss rate resulted from the ablation and the denudation. In this model, three chemical formulas and ablation mechanism are presented to evaluate the mass loss rate; the core-spread vortex method is used to analyze the flow around the cylinder; and the particle trajectory equation is given to explore the traces of denudation particles. To obtain the mass loss rate of the cylinder in the two-phase flow, the simulations are performed well by using the written codes. Numerical results show that the Re number of gaseous mixture exerts significant effects on both the vortex street and the ablation rate. Furthermore, it is found that the vorticity determines the motion and distribution of denudation particles.
- 出版日期2011-3
- 单位中国地震局工程力学研究所; 北京交通大学
