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Numerical Analysis on the Effect of Wavy Partitions on Natural Convection in Porous Enclosure

机译：波浪分区对多孔外壳自然对流影响的数值分析

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摘要

The influence of partitions on natural convection in a differentially heated porous enclosure has been investigated for three different partition shapes, namely, sine-wave, corrugated and square-wave shape. The objective is to identify the best partition shape with regard to achieve maximum reduction in the rate of convection heat transfer. Darcy flow model has been used to describe flow in porous media. Coordinate transformation has been used to formulate the governing equations for sine-wave partition owing to its wavy nature. To assess the effectiveness of various partition shapes, the results are compared with porous enclosure without partition and with straight partition. The governing equations are solved using the successive accelerated replacement scheme for a wide range of parameters like partition amplitude, position, Rayleigh number, enclosure aspect ratio (AR), and inclination angle. One of the findings reveals that for the same amplitude and position, the square-wave partition yields the maximum suppression in the value of Nus-selt number.
机译：已经研究了三种不同的隔板形状，即正弦波，波纹和方波形状，研究了分区对差动多孔外壳中的自然对流的影响。目的是在实现对流热传递速率的最大降低方面识别最佳分区形状。达西流动模型已被用于描述多孔介质中的流动。坐标变换已被用于制定由于其波浪性质而用于正弦波分区的控制方程。为了评估各种分区形状的有效性，将结果与无孔外壳进行比较，而无需隔断和直接隔板。使用连续加速的替换方案来解决控制方程，用于各种参数，如分区幅度，位置，瑞利数，外壳纵横比（AR）和倾斜角度。其中一个发现表明，对于相同的幅度和位置，方波分区产生NUS-SELT数的值中的最大抑制。

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  • 来源
    《Journal of Heat Transfer》 |2020年第9期|092601.1-092601.8|共8页
  • 作者

    Jayesh Subhash Chordiya; Ram Vinoy Sharma;

  • 作者单位

    Department of Mechanical Engineering National Institute of Technology Jamshedpur Jamshedpur Jharkhand 831014 India;

    Department of Mechanical Engineering National Institute of Technology Jamshedpur Jamshedpur Jharkhand 831014 India;

  • 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
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