气泡-液体多股射流二阶矩两相湍流模型的模拟  

SIMULATION OF BUBBLE-LIQUID JETS USING A SECOND-ORDER MOMENT TWO-PHASE TURBULENCE MODEL

作　　者：杨玟[1] 周力行[1] 李荣先[1] L.S.Fan 

机构地区：[1]清华大学工程力学系,北京100084 [2]Department of Chemical Engineering The Ohio State University

出　　处：《工程热物理学报》2002年第2期231-234,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.19872039)

摘　　要：本文采用二阶矩两相湍流模型模拟了气泡－液体闭式多股射流。研究结果显示出预报的两相速度、雷诺应力和气泡体积分数分布的合理性，以及在速度较高和剪切较强的情况下，气泡湍流脉动仍然大于液体湍流脉动，气泡增强液体湍流，气液两相湍流脉动均存在各向异性，而且气泡脉动的各向异性比液体脉动的大等规律。The bubble-liquid two-phase jets are simulated using a second-order moment two-phase turbulence model. The results give the two-phase velocities, Reynolds stresses and bubble volume fraction. It is shown that in case of higher velocities there is stronger bubble turbulent fluctuation than liquid turbulent fluctuation and stronger anisotropy of bubble turbulence than the anisotropy of liquid turbulence, bubbles enhance the liquid turbulence.

关 键 词：两相湍流 二阶矩模型 数值模拟 气泡-液体多股射流 速度 应力 体积 脉动 

分 类 号：O357.6[理学—流体力学]