摘要
用正则模方法研究了变密度无粘旋拧射流线性稳定性特征。对于离心稳定的基本流速度剖面,在解析地得到色散关系之后,分析了不同参数情况下各种失稳机制在流场中的作用,考察了表面张力、旋拧、密度比等因素对扰动增长率的影响。
The inviscid linear stability of variable density swirling jets is analyzed by normal mode method. For the centrifugally stable basic velocity profile, the dispersion relation is obtained analytically. The roles of several kinds of unstable mechanisms are discussed for different flow parameters. The effects of surface tension, swirling ratio, and density ratio on the growth rate of the least unstable mode are investigated in the present study.
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2005年第5期624-628,共5页
Chinese Journal of Hydrodynamics
基金
国家自然科学基金(批准号:50371049)
关键词
旋拧射流
稳定性
表面张力
swirling jet
stability
surface tension
