中国激光, 2009, 36 (4): 1005, 网络出版: 2009-04-27
两种激光切割超音速喷嘴结构设计与辅助气体流场分析
Structural Design and Assist Gas Flow Analysis of Two-Laser Cutting Supersonic Nozzles
激光技术 激光切割 超音速喷嘴 流场分析 流体动力学 laser technique laser cutting supersonic nozzle flow analysis hydrokinetics
摘要
对简易折线缩放喷嘴和基于霍耳(Hall)设计方法的复杂喷嘴外流场中压力分布,以及马赫盘位置变化等特性进行了分析。详细比较了这两种喷嘴气流场动力学性能之间的差别,揭示了两种喷嘴动力学性能的差别随工作压力增加越来越小的趋势。分析表明在高压状况下为减少激光切割的成本,用简易折线结构超音速喷嘴替代复杂流线结构喷嘴是可行的。
Abstract
The characteristics of the pressure distribution and Mach disk position are analyzed for simple nozzle and complicated nozzle based on Hall design method, and the difference of dynamic characteristic of gas flow is compared particularly. The trend is revealed that the difference of dynamic characteristic between the two nozzles becomes smaller with the increase of working pressure. It is demonstrated that using the simple structure nozzle to replace the complicated flow line structure nozzle is feasible for decreasing the cost of laser cutting under the high pressure condition.
胡俊, 邱明勇, 姚振强. 两种激光切割超音速喷嘴结构设计与辅助气体流场分析[J]. 中国激光, 2009, 36(4): 1005. Hu Jun, Qiu Mingyong, Yao Zhenqiang. Structural Design and Assist Gas Flow Analysis of Two-Laser Cutting Supersonic Nozzles[J]. Chinese Journal of Lasers, 2009, 36(4): 1005.