旋转环形液池内双组分溶液热毛细对流研究  

Study on the Thermal Capillary Convection of the Binary Mixture in a Rotating Annular Pool

作　　者：朱承志 于佳佳[1] 彭岚[1] 李友荣[1] ZHU Cheng-Zhi;YU Jia-Jia;PENG Lan;LI You-Rong(Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education,College of Energy and Power Engineering,Chongqing University,Chongqing 400044,China;College of Safety Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]重庆大学能源与动力工程学院低品位能源利用技术及系统教育部重点实验室,重庆400044 [2]重庆科技学院安全工程学院,重庆401331

出　　处：《工程热物理学报》2021年第9期2419-2430,共12页Journal of Engineering Thermophysics

基　　金：国家自然科学基金青年科学基金(No.51806025);重庆市留学人员创业创新支持计划(No.cx2019053);油气藏地质及开发工程国家重点实验室(西南石油大学)开放基金(No.PLN2020-8);中央高校基本科研业务费(No.2018CDXYDL0001)。

摘　　要：通过毛细对流可视化实验系统和三维数值模拟研究了旋转环形液池内受Soret效应影响的双组分溶液热毛细对流,探究了泰勒数和液池深宽比对双组分溶液热毛细对流的稳定性及失稳后产生的振荡流型的影响。结果表明,旋转液池内受Soret效应影响的热毛细对流的基础流为逆时针流胞形成的轴对称稳态流动,液池旋转对基础流径向流动的影响较小,但会明显增大流体的相对周向流动。临界热毛细雷诺数随泰勒数的增大而增大,随深宽比的增大而减小。泰勒数和深宽比的变化会明显改变双组分溶液热毛细对流失稳后产生的振荡流型。随着泰勒数的增大,液池中会出现HTWs和内部波动共存的振荡流型,内部振荡由包含在基态流动中的旋转流胞产生。Through a series of experimental and numerical researches on the thermal capillary convection with Soret effect in a rotating annular pool,the effect of the Taylor number and the aspect ratio on the flow stability and oscillatory flow pattern of thermal capillary convection in the binary mixture was investigated.The result indicates that the basic flow of thermal capillary convection with the Soret effect is an axisymmetric steady flow formed by anticlockwise vortex in a rotating annular pool.The pool rotation hardly affects the radial flow of the basic flow,but obviously enhances the azimuthal flow.The critical thermal capillary Reynolds number increases with the increase of the Taylor number,and decreases with the increase of the aspect ratio.The Taylor number and the aspect ration remarkably affect the oscillatory flow pattern.With the increasing Taylor number,the flow pattern composed by the HTWs and the internal oscillatory flow was observed.The internal oscillatory flow is created by the rotating flow cells contained in the basic flow.

关 键 词：热毛细对流 双组分溶液 旋转 深宽比 Soret效应 

分 类 号：TK124[动力工程及工程热物理—工程热物理]