实验流体力学2011，Vol.25Issue(2)：29-34,40,7.
超声速冷态流场液体射流雾化实验研究
Experimental investigation of liquid jets atomization in supersonic cold crossflow
陈亮 1乐嘉陵 1宋文艳 2杨顺华 1曹娜2
作者信息
- 1. 西北工业大学动力与能源学院,西安710072
- 2. 中国空气动力研究与发展中心,四川绵阳621000
- 折叠
摘要
Abstract
Holographic diagnosis and high-speed schlieren photography were applied to study the atomization of liquid jets in supersonic crossflow under various experimental conditions,which contain the stream total pressure, the stream Mach number, the nozzle diameter and the injection pressure.The process and the theoretical principal of liquid jets atomization in the supersonic crossflow have been studied preliminary.Atomization parameters such as Weber number and ()h number have been acquired as well.The jet penetration heights under different experimental conditions and the spatial distributions of diameters and number density of the droplets have been measured.Results indicate that the instability wave growth on the surface is one of the primary factors to liquid jet breaking up in supersonic crossflow.The jet penetration height will increase if the jet-to-air momentums flux ratios or orifice diameters increase.Moreover, the study demonstrates the process of liquid jet atomization is very speedy in supersonic crossflow, i.e.,the liquid jet is broken into droplets of mean diameter 10μm at 20mm downstream the nozzle bank.As the droplets move downstream, the mean diameter decreases and distributions of mean diameters and number density become uniform gradually.关键词
超声速流场/全息诊断/雾化Key words
supersonic flow/ holography diagnosis/ atomization分类
数理科学引用本文复制引用
陈亮,乐嘉陵,宋文艳,杨顺华,曹娜..超声速冷态流场液体射流雾化实验研究[J].实验流体力学,2011,25(2):29-34,40,7.
