平板近壁面双孔通气气液两相流场的数值模拟研究  

Numerical Simulation of Gas-Liquid Two-Phase Flows for Two Holes Ventilated Cavities Near Wall of the Flat Plate

作　　者：吕亚飞 张孟杰 刘涛涛[1] 陈杰 赵欣[1] LV Yafei;ZHANG Mengjie;LIU Taotao;CHEN Jie;ZHAO Xin(School of Machinery and Vehicle,Beijing Institute of Technology,Beijing 100081,China;China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]中国北方车辆研究所,北京100072

出　　处：《数字海洋与水下攻防》2021年第4期279-287,共9页Digital Ocean & Underwater Warfare

基　　金：国家自然科学基金项目(12002038);北京市自然科学基金(3204055)。

摘　　要：基于自编程序发展了一种平板近壁面通气气液两相湍流流动数值模拟方法,并对近壁面双孔通气气液两相流场进行了数值模拟分析。研究结果表明:建立的数值计算方法摆脱了对传统RANS湍流模型的依赖,可以较好地捕捉气液界面的失稳现象,模拟结果与实验结果吻合较好。平板近壁面双孔通气气泡的掺混融合过程可以分为3个流动阶段:独立稳定发展阶段、初步掺混融合阶段以及充分融合阶段。流场中气泡的发展演化与旋涡结构相关,剪切层涡和反向旋转涡对在其掺混融合过程中起着主要作用。Based on the self-developed program,a numerical simulation method of the two-phase turbulent flow for ventilated cavity near wall of the flat plate is developed,and the gas-liquid two-phase flow for double-hole ventilated cavity near wall of the flat plate is simulated and analyzed.The results show that the numerical method established in this paper can get rid of the dependence on the traditional RANS turbulence model,and can capture the instability of gas-liquid interface better.The simulation results are in good agreement with the experimental results.The mixing and fusion process of double-hole ventilated cavity can be divided into three stages:independent and stable development stage,preliminary mixing and fusion stage and full fusion stage.The development and evolution of ventilated cavities are related to the vortex structure,which means that the shear layer vortices and counter rotating vortex play important role in the mixing process.

关 键 词：平板近壁面 通气气泡 旋涡结构 数值模拟 

分 类 号：TV131.3[水利工程—水力学及河流动力学]