Simulation on Swirl Liquid Sheet Breakup Process Based on Moving Particle Semi-Implicit Method

被引：0
|
作者：
Gou W.-J. [1 ]
Chen M.-H. [2 ]
Zhang S. [1 ]
Zheng Y. [1 ]
机构：
[1] School of Aeronautics and Astronautics, Zhejiang University, Hangzhou
[2] Shanghai Aircraft Design and Research Institute, Shanghai
来源：
Tuijin Jishu/Journal of Propulsion Technology | 2020年 / 41卷 / 07期
关键词：
Breakup process; Centrifugal atomizer; Conical liquid film; MPS method; Primary atomization;
D O I：
10.13675/j.cnki.tjjs.190404
中图分类号：
学科分类号：
摘要：
In order to realize direct numerical simulation of the primary breakup process of swirling liquid film, a parallel program for simulating the atomization process is developed based on the moving particle semi-implicit (MPS) method accelerated by GPU (graphics processing unit). The 3D spray field characteristics and primary breakup process are simulated. The results show that the MPS method successfully captured the formation of liquid films, the breaking of liquid films into liquid filaments and the breaking of liquid filaments into droplets. The computational results are basically in good agreement with the breakup process images of conical liquid sheet photographed in experiment. The breakup process of swirling liquid film at different jet velocities was simulated, the simulated results of primary breakup length of liquid film are in good agreement with the calculated results of empirical formulas, with a maximum error of 24.2%. The simulated half-cone angle of the liquid film is in good agreement with the experimental value, with an error of 10.6%. The above results show the accuracy of the calculation method, which lays a foundation for the subsequent liquid film atomization process and atomization characteristics of pressure-swirl injectors. © 2020, Editorial Department of Journal of Propulsion Technology. All right reserved.
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页码：1529 / 1535
页数：6
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