流体机械2012，Vol.40Issue(7)：38-41,51,5.DOI:10.3969/j.issn.1005-0329.2012.07.009
超大面积比射流泵性能的数值模拟与流动分析
Numerical and Experimental Investigation on a Super-large Area Ratio Jet Pump
程洪贵 1龙新平 2杨雪龙 2肖龙洲2
作者信息
- 1. 中国航天科工集团三十一研究所 高超声速冲压发动机技术重点实验室,北京100074
- 2. 武汉大学,湖北武汉430072
- 折叠
摘要
Abstract
Based on three dimentional numerical simulation results, the super large area ratio jet pump is studied in this work. The single-nozzle jet pump with area-ratio of 57.4 and 60.05 is simulated with realizable k-epsilon turbulence model and standard wall fuction and its structure is optimized. The pressure and velocity distribution is analyzed according to the numerical simulation results. The result of experimental investigation shows that the resistance increases rapidly with the flow ratio for super large area ratio jet pump, resulting in the drop trend of the pressure ratio is close to parabola while that of the conventional jet pump derease linearly. The most-high efficiency working point moves to the right with the area ratio increasing and the best throat length increases. The flow field is more close to unconfmed accompany jet flow because the primary fluid has sufficient room to spread radially in the throat.关键词
射流泵/超大面积比/CFDKey words
jet pump/ super large area ratio pump/ CFD分类
机械制造引用本文复制引用
程洪贵,龙新平,杨雪龙,肖龙洲..超大面积比射流泵性能的数值模拟与流动分析[J].流体机械,2012,40(7):38-41,51,5.
