Study on Jet Instability with Linear Temperature Distribution

被引：0
|
作者：
Zhang T. [1 ,2 ]
Chen J. [1 ,2 ]
Li Y. [1 ]
Bai S. [1 ,2 ]
Chen Y. [1 ,2 ]
Lyu M. [3 ]
机构：
[1] Beijing Institute of Control Engineering, Beijing
[2] Beijing Engineering Research Center of Efficient and Green Aerospace Propulsion Technology, Beijing
[3] College of Mechanical and Electrical Engineering, Beijing Jiaotong University, Beijing
来源：
Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines) | 2020年 / 38卷 / 03期
关键词：
Liquid jet; Mathematical model; Temperature disturbance; Thermal stability;
D O I：
10.16236/j.cnki.nrjxb.202003036
中图分类号：
学科分类号：
摘要：
Based on the linear stability theory, the control equations of jet disturbance were established for the splitting process of liquid jet with linear temperature distribution. The boundary conditions of the disturbance equations in gas-liquid interface were given, and then the dispersion relation describing the three-dimensional disturbance on the free surface of cylindrical liquid jet was derived. Besides, the gas-liquid temperature difference, supercavitation, rotation of the surrounding gas, as well as the compressibility of the jet and the surrounding gas were considered in the mathematical model. The corresponding numerical method for solving the mathematical model was proposed and verified by the experimental data from references, and verification results show that the model and its solution method is correct and reasonable. Furthermore, the effects of temperature differences on jet instability under asymmetric disturbance conditions were analyzed, and the effects of supercavitation, gas rotation and fluids compressibility on the stability of liquid jet in the presence of temperature difference were discussed. The results show that the gas-liquid temperature difference plays an important role in jet instability. Temperature difference enhances the influences of supercavitation, gas rotation and fluids compressibility on the stability of liquid jet. © 2020, Editorial Office of the Transaction of CSICE. All right reserved.
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页码：273 / 279
页数：6
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