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DRBEM solution of free convection in porous enclosures under the effect of a magnetic field

机译：磁场作用下多孔外壳中自由对流的DRBEM解决方案

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摘要

The dual reciprocity boundary element method (DRBEM) is applied for solving steady free convection in special shape enclosures filled with a fluid saturated porous medium under the effect of a magnetic field. The left and right walls are maintained at constant or different temperatures while the top and bottom walls are kept adiabatic. The effect of the external magnetic field on the flow and temperature behavior is visualized with different Rayleigh numbers Ra, Hartmann numbers Ha and inclination angle ψ. The boundary only nature of DRBEM results in considerably small computational cost in obtaining numerical solution. The results are in good qualitative agreement with the available numerical results in the literature. It is found that the increase in the strength of the magnetic field causes the suppression on the motion of the fluid which points to the conductive heat transfer.
机译：双重互易边界元方法（DRBEM）用于解决在磁场作用下充满流体饱和多孔介质的特殊形状外壳中的稳定自由对流问题。左壁和右壁保持恒定或不同的温度，而顶壁和底壁保持绝热。通过不同的瑞利数Ra，哈特曼数Ha和倾角ψ可以看到外部磁场对流动和温度行为的影响。 DRBEM的仅边界性质导致获得数值解的计算成本非常低。结果与文献中可用的数值结果在质量上吻合良好。已经发现，磁场强度的增加导致对流体运动的抑制，流体的运动指向传导性热传递。

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  • 来源
  • 作者

    B. Pekmen; M. Tezer-Sezgin;

  • 作者单位

    Institute of Applied Mathematics, Department of Scientific Computing, Middle East Technical University, Ankara, Turkey,Department of Mathematics, Atilim University, Ankara, Turkey;

    Department of Mathematics, Middle East Technical University, Ankara, Turkey,Institute of Applied Mathematics, Department of Scientific Computing, Middle East Technical University, Ankara, Turkey;

  • 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

    free convection; porous medium; square enclosure; trapezoidal enclosure;

    机译：自由对流;多孔介质方形外壳梯形外壳;

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