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Convective Heat Transfer of an Air Bubble in Water With Variable Thermophysical Properties

机译：可变热物理性质的水中气泡的对流换热

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摘要

A numerical study of convective heat transfer of an air bubble in water with variable thermophysical properties is considered. Two-dimensional simulations of multifluid flows with heat transfer include the Navier-Stokes, energy, and volume of fluid (VOF) advection equations. The solver computes the flow field and temperature by solving the systems of Navier-Stokes equations and the energy equation using the finite-volume method with the SIMPLE algorithm and tracks the position of interface between two fluids with different fluid properties by the VOF method with piecewise linear interface construction technique. Empirical correlations in terms of temperature for thermophysical properties are considered in the simulations. The convective heat transfer model is assessed with a benchmark problem of cooling of water and compared with previous literature data showing good agreement. Finally, a numerical study of the effect of the bubble diameter in the range from 2 mm to 3 mm on heat transfer is performed.
机译：考虑了具有可变热物理性质的水中气泡对流传热的数值研究。带有传热的多流体流动的二维模拟包括Navier-Stokes，能量和流体体积（VOF）对流方程。求解器通过使用SIMPLE算法使用有限体积方法求解Navier-Stokes方程组和能量方程组来计算流场和温度，并通过VOF方法以分段方式跟踪两种具有不同流体特性的流体之间的界面位置线性界面构建技术。在模拟中考虑了温度对热物理性质的经验相关性。对流传热模型以水冷却的基准问题进行评估，并与先前的文献数据进行了比较，显示出良好的一致性。最后，对气泡直径在2mm到3mm范围内对传热的影响进行了数值研究。

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  • 来源
    《Heat Transfer Engineering》 |2014年第15期|1370-1379|共10页
  • 作者

    SUNDARARAJ SENTHIL KUMAR; YAN M. C. DELAURE;

  • 作者单位

    ESEME, Service des Basses Temperatures, INAC/CEA-Grenoble, Grenoble, France,Postdoctoral Fellow, CEA- ESEME, ESPCI-PMMH, 10, rue de Vauquelin, 75231, Paris Cedex 05, France;

    School of Mechanical and Manufacturing Engineering, Dublin City University, Dublin, Ireland;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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