受激液体射流的非轴对称模式  

Asymmetric Modes of an Excited Liquid Jet

作　　者：杜青[1] 刘宁[1] 杨延相[1] 郗大光[1] 林玉静[1] 史绍熙[1] 

机构地区：[1]天津大学内燃机燃烧学国家重点实验室,天津300072

出　　处：《燃烧科学与技术》2002年第2期181-184,共4页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目 (5990 60 0 8)

摘　　要：利用液体射流破碎的线性不稳定性理论 ,研究了受激液体射流特有的“局部频段非轴对称模式占优”现象 ,由一系列理论计算结果 ,得到了 Re- We平面上的相应临界曲线 ,并根据这些曲线得出了受激液体射流出现非轴对称模式结构特征的物理条件。计算结果还表明 ,受激液体射流和自由液体射流的临界曲线有明显不同。初步的实验观察结果证实了理论的预测。The theory of a linear instability analysis is used to study the dominant asymmetric mode of an excited liquid jet in this paper.The theoretical results yield a series of critical curves on the Re We plane,where Re and We denote respectively the Reynolds number and Weber number.From these curves the physical conditions in which the asymmetric modes may dominate the excited liquid jets are obtained.The results also indicate that the critical curves of a free jet and an excited jet are quite different.The theoretical analysis agrees fairly well with that of the experimental observations.

关 键 词：非轴对称模式 主导频率 受激液体射流 自由液体射流 液体射流破碎模型 

分 类 号：O358[理学—流体力学]