超音速横向流作用下射流的二次破碎模型研究  

Modeling the secondary breakup of a liquid jet in supersonic cross flows

作　　者：杨东超[1] 朱卫兵[1] 陈宏[1] 郭金鑫[2] 刘建文[2] 

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001 [2]中国航天科工集团公司三十一所高超声速冲压发动机技术重点实验室,北京100074

出　　处：《哈尔滨工程大学学报》2014年第1期62-68,共7页Journal of Harbin Engineering University

基　　金：国家安全重大基础研究基金资助项目(613157);中央高校基本科研业务费专项基金资助项目(HEUCF130202);高超声速冲压发动机技术重点实验室开放基金资助项目(20110103006)

摘　　要：为了对超声速横向流作用下射流雾化过程进行数值模拟,采用Eulerian-Lagrangian方法描述气液两相流动现象,分别采用4种不同二次破碎模型计算液滴破碎过程。同时考虑气流可压缩性、湍流的脉动效应及液滴变形对液滴运动的影响。计算结果表明,TAB模型得到的滴径最小,其穿透深度也最小,不适用于超音速条件下的破碎过程;SSD模型计算的滴径尺寸较为均一;WAVE模型与K-H/R-T模型的结果相近;而K-H/R-T模型得到的穿透深度与实验更为相符。In order to simulate the atomization process in supersonic cross flows, the Eulerian-Lagrangian method was used to demonstrate the gas-liquid two-phase flow phenomena, and four different secondary break-up models were adopted to simulate the process of droplets breaking up. Additionally, the influence of the compressibility of the air, the turbulent fluctuations and the droplets deformation on the droplet movements was considered. The calculation results show that, the TAB model gets the minimum droplet diameter and penetration depth, and is not suitable for the break-up process in supersonic conditions. The droplet sizes determined by the SSD model are relatively uniform. The results of the WAVE and K-H/R-T model are similar. The penetration depth obtained by the K-H/RT model matched the experimental results better.

关 键 词：超音速横向流 二次破碎模型 DPM模型 Eulerian—Lagrangian方法 

分 类 号：O359.1[理学—流体力学]