摘要
针对冷喷涂材料表面改性技术研究中,超音速冲击射流流场存在激波、分离流等复杂的物理现象,采用扩展压强校正法求解用紊流模型封闭的可压缩湍流平均N-S方程组,利用交错网格系统抹平迭代过程中的数值振荡,并通过高分辨率的离散格式进一步改善校正法的激波捕获效果,对冷喷涂工艺中的超音速冲击射流流场进行了详细的数值模拟,可为冷喷涂实验及机理研究提供重要依据.
Some complex phenomena are found in the cold gas-dynamic spray technique for material modification, such as shock wave, separating flow, etc. The extended-pressure correction algorithm is used to solve N-S equation group of the turbulence, and the staggered grid is adopted to reduce the numerical diffusion, and the high resolution ratio discretization is utilized to improve the shock-capture. The calculated results are in accord with those of the experiments. The numerical analysis is used to direct and optimize the cold spray experiment.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2004年第3期398-401,共4页
Journal of Dalian University of Technology
基金
教育部高等学校骨干教师资助计划资助项目(教技司200065)
辽宁省自然科学基金资助项目(157).
