摘要
对气流粉碎装置的喷嘴结构和参数运用均匀设计法进行设计与优化,采用流体动力学软件对所设计喷嘴进行流场模拟,应用有限元分析软件对喷嘴内部结构受力情况进行分析,对喷嘴效果进行检验.分别讨论了入口直径,入口稳定段长度,喉部临界截面和内腔造型对超音速喷嘴性能的影响,通过结果比较得出,入口压力3.5MPa,入口直径为6mm的喷嘴为设计的最佳喷嘴.内腔锥角在8°～12°之间变化时,对喷嘴的性能影响不大,内腔造型为光滑曲面时喷嘴性能最佳.
The structure and parameters of the nozzle of a jet mill device are optimized, numerical simulations of the inner structure are carried out with hydrokinetics software, the stress analysis of the structure is conducted with finite element software, and the effects of inlet diameter, section area of throat region, passage shape and diffusion angle on supersonic nozzle are analyzed. Optimized operation parameters include pressure of 3.5 MPa and inlet diameter of 6 mm after comparing different simulations. In the range of 8°-12°, the diffusion angle has little effect on the performance of the designed supersonic nozzle.
出处
《力学与实践》
CSCD
北大核心
2009年第2期17-21,共5页
Mechanics in Engineering
关键词
超音速喷嘴
均匀设计
数值模拟
喷嘴内腔造型
ultrasonic nozzle, uniform design, diffuse angle, simulated numerically, nozzle inner structure
