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Influence of Gravitational Modulation on Natural Convection in a Horizontal Porous Annulus

机译:重力调制对水平多孔环中自然对流的影响

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摘要

The influence of gravitational modulation on natural convection in a horizontal porous annulus is investigated in this paper. The mathematical model describing the phenomenon consists of the heat equation coupled by the hydrodynamics equations under the Boussinesq approximation. The derived system of equations with the stream function-temperature formulation is obtained and solved numerically using the alternating direction implicit method. It is shown that the convective stability of the fluid can be gained for small amplitudes of the vibration, while it will be lost for large ones. It was also observed that increasing the frequency has a destabilizing effect.
机译:本文研究了重力调制对水平多孔环空自然对流的影响。描述该现象的数学模型由在Boussinesq近似下的热方程与流体动力学方程耦合而成。得到了具有流函数-温度公式的推导方程组,并使用交替方向隐式方法对其进行了数值求解。结果表明,对于较小的振动幅度,可以获得流体的对流稳定性,而对于较大的振动,则丧失了对流稳定性。还观察到增加频率具有不稳定作用。

著录项

  • 来源
    《Journal of Heat Transfer》 |2017年第2期|022502.1-022502.6|共6页
  • 作者

    Jabrane Belabid; Karam Allali;

  • 作者单位

    Mohammadia School of Engineers, Mohammed V University in Rabat, Agdal Rabat, Morocco;

    Laboratory of Mathematics and Applications, Faculty of Sciences and Technologies, University Hassan Ⅱ of Casablanca, Mohammedia, Morocco;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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