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NUMERICAL STUDY OF NATURAL CONVECTION IN A SPHERICAL POROUS ANNULUS

Volumen 19, Ausgabe 3, 2016, pp. 277-286
DOI: 10.1615/JPorMedia.v19.i3.70
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ABSTRAKT

The present study reports results of numerical simulation of natural convection in a spherical annulus filled with fluid-saturated porous medium. The problem is solved when the inner and outer walls of spherical porous annulus are maintained at cold and hot temperatures, respectively. The problem has been solved numerically employing successive accelerated replacement (SAR) scheme for wide range of parameters, i.e., Rayleigh number (100 ≤ Ra ≤ 2000) and aspect ratio (0.25 ≤ A ≤ 1.0). As Rayleigh number and aspect ratio increase, the average Nusselt number increases. The boundary layer formation takes place at higher Rayleigh number. The center of the stream lines shift downward as aspect ratio increases

REFERENZIERT VON
  1. Chordiya Jayesh Subhash, Sharma Ram Vinoy, Conjugate natural convection in a fluid-saturated porous enclosure with two solid vertical partitions, Heat Transfer-Asian Research, 47, 8, 2018. Crossref

  2. Nield Donald A., Bejan Adrian, Internal Natural Convection: Heating from the Side, in Convection in Porous Media, 2017. Crossref

  3. Chordiya Jayesh Subhash, Sharma Ram Vinoy, Numerical study on effect of corrugated diathermal partition on natural convection in a square porous cavity, Journal of Mechanical Science and Technology, 33, 5, 2019. Crossref

  4. Chordiya Jayesh Subhash, Sharma Ram Vinoy, Numerical Analysis on the Effect of Wavy Partitions on Natural Convection in Porous Enclosure, Journal of Heat Transfer, 142, 9, 2020. Crossref

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