| 垂直上升气液环状流流动参数的数值计算 |
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| 引用本文： | 刘杨,李维仲.垂直上升气液环状流流动参数的数值计算[J].计算力学学报,2011,28(1):96-101. |
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| 作者姓名： | 刘杨 李维仲 |
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| 作者单位： | 大连理工大学,海洋能源利用与节能教育部重点实验室,大连,116023 |
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| 基金项目： | 国家自然科学基金(50976017);国家自然科学基金重点(50736001)资助项目. |
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| 摘 要： | 提出了一个新的气核-液膜耦合模型来求解垂直上升气液环状流在充分发展段的流动参数.本模型考虑了液膜、气核以及它们之间的相互影响和作用.模型中基本的气核区域和液膜区域的质量和动量方程由Fluent6.3.26进行求解,而液滴方程以及相界面上的夹带和沉积作用通过用户自定义接口函数UDF(User Defined Functi...
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| 关 键 词： | 环状流 两相流 CFD 数值模拟 夹带 沉积 |
| 收稿时间： | 2009/11/8 0:00:00 |
| 修稿时间： | 2010/10/15 0:00:00 |
Numerical simulation on vertical upward gas-liquid annular flow |
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| LIU Yang and LI Wei-zhong.Numerical simulation on vertical upward gas-liquid annular flow[J].Chinese Journal of Computational Mechanics,2011,28(1):96-101. |
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| Authors: | LIU Yang and LI Wei-zhong |
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| Institution: | Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116023, China;Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116023, China |
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| Abstract: | A new film-gas core coupled model is proposed to account for vertical upward developed gas-liquid annular flow in this paper. Present model includes film flow, gas core flow as well as the effect of their interactions. Governing equations are solved by Fluent6.3.26 while the droplet equation, interfacial entrainment and deposition are accounted for by user defined function. Results show that pressure gradient and wall shear stress increase with inlet gas and liquid velocity, while entrainment fraction and film thickness results are not sensitive to inlet liquid velocity. Comparison of simulation results with experimental data implies that present model can well describe upward gas-liquid annular flow. |
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| Keywords: | annular flow two-phase flow CFD numerical simulation entrainment deposition |
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