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A simplified CFD model for air-lift artificial upwelling

机译：气举人工上升流的简化CFD模型

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摘要

Air-lift artificial upwelling was simulated through a simplified computational fluid dynamics (CFD) model of two-phase flow in an upward pipe. This model is based on the momentum transfer between the two phases. An algebraic turbulence model was employed to enclose the equations. The volumetric flow rates of the liquid and the gas phases, the void fraction distribution, and the pressure and velocity profiles along the axial coordinate were calculated in the stationary state. Numerical tests were conducted to verify the model. The good agreement obtained between the computational results and the field test measurements with cross-shaped air injectors demonstrates the capability of this model for dispersed bubbly flow conditions. Comparisons with the analytical theory were also made. The results indicated that the proposed engineering-oriented model is efficient for the optimization of the system.
机译：通过向上管道中两相流的简化计算流体动力学（CFD）模型模拟​​了气举人工上升流。该模型基于两个阶段之间的动量传递。使用代数湍流模型来封闭方程。在静止状态下，计算液相和气相的体积流量，空隙率分布以及沿轴向坐标的压力和速度分布。进行了数值测试以验证模型。计算结果与使用十字形空气喷射器进行的现场测试测量之间取得了良好的一致性，证明了该模型在分散气泡流条件下的能力。还与分析理论进行了比较。结果表明，所提出的面向工程的模型对于系统的优化是有效的。

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  • 来源
    《Ocean Engineering》 |2013年第1期|267-276|共10页
  • 作者

    Qicheng Meng; Chizhong Wang; Ying Chen; Jiawang Chen;

  • 作者单位

    The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, The People's Republic of China,Department of Mechanical Engineering, University College London, Torrington Place, London WC1E 7JE, UK;

    Department of Ocean Science and Engineering, Zhejiang University, Hangzhou, The People's Republic of China;

    The State Key Lab of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, The People's Republic of China,Department of Ocean Science and Engineering, Zhejiang University, Hangzhou, The People's Republic of China;

    Department of Ocean Science and Engineering, Zhejiang University, Hangzhou, The People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    DOW; Artificial upwelling; Air-lift; CFD; Two-phase flow; Euler-Lagrange;

    机译：陶氏人工上升流;空运;差价合约两相流;欧拉·拉格朗日;

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