矩形高速流场的材料去除特性
Material removal characteristics analysis of rectangular high-speed flow field in fluid jet polishing
-
摘要: 为了提高射流抛光的加工效率,设计了一种矩形喷嘴结构,基于并行去除方式来提高工件的去除效率。根据流体力学基本理论,分析了矩形喷嘴冲击射流流场的结构特性,并对其流场分布进行了定量计算。基于射流去除理论,建立了矩形喷嘴的材料去除理论模型,并对去除量分布进行了计算与比较。详细分析了矩形喷嘴结构参数与去除量之间的关系,在此基础上对矩形喷嘴进行了优化,结果表明,矩形喷嘴长宽比控制在10左右能够得到很好的去除效果。Abstract: In order to improve the efficiency of fluid jet polishing (FJP),the rectangle-nozzle structure was proposed to im-prove the removal efficiency in parallel.According to principles of fluid dynamics,the flow field characteristic of rectangle-nozzle structure was analyzed theoretically and the flow field distribution was calculated.Based on jet removal theory,the theoretical material removal models of rectangle-nozzle model were established,and removal distributions were calculated and compared.The relationship between rectangle-nozzle structure parameters and removal was analyzed in detail.Based on above results,the rectan-gle-nozzle was optimized.The results show that when the rectangle-nozzle length-width ratio be controlled to 10 or so can obtain better removal effect.
-
-
计量
- 文章访问数: 304
- HTML全文浏览数: 150
- PDF下载数: 7
- 施引文献: 0