微细通道气液分离器的数值模拟及优化  

Numerical Simulation and Optimization of Microchannel Gas-liquid Separator

作　　者：李秉乘 侯俊明 李超[1] 马强 曾敏[1] 王秋旺[1] LI Bingcheng;HOU Junming;LI Chao;MA Qiang;ZENG Min;WANG Qiuwang(Key Laboratory of Thermal Flow Science and Engineering,MOE,Xi'an Jiaotong University,Xi'an 710049,China;Haier Group Corporation,Qingdao 266101,China)

机构地区：[1]西安交通大学热流科学与工程教育部重点实验室,西安710049 [2]海尔集团公司,青岛266101

出　　处：《工程热物理学报》2025年第2期645-651,共7页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.52130609)。

摘　　要：微细通道气液分离器具有通液阻气、流型调控的作用。本文采用VOF数值模拟的方法,在湍流状态下,分别对具有相同水力直径且截面形状为正方形、圆形、三角形、菱形和矩形微细通道进行模拟计算,研究了不同截面形状对气液两相流分离效率及对流型的影响,通过经验关联式对数值模型进行了验证,结果吻合较好。综合对比了增设微细通道气液分离器前后换热器的传热与压降性能,分析了微细通道气液分离与换热器性能提升的原理。The microchannel gas-liquid separator possesses functions of liquid passage resistance and flow regime control.In this study,the Volume of Fluid(VOF)numerical simulation method is employed to investigate the effect of different cross-sectional shapes(square,circular,triangular,rhombic,and rectangular)on the gas-liquid two-phase flow separation efficiency and flow regime of microchannels with the same hydraulic diameter under turbulent conditions.The numerical model is validated using empirical correlation equations,and the results show good agreement.The heat transfer and pressure drop performances of the heat exchanger before and after installing the microchannel gas-liquid separator are comprehensively compared.The principles behind enhancing gas-liquid separation and heat exchanger performance in microchannels are analyzed.

关 键 词：气液分离 冷凝 微细通道 强化传热 

分 类 号：TK172[动力工程及工程热物理—热能工程]