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Thermal performance of nanofluid saturated porous medium on cooling electronics contained in an inclined hemispherical enclosure

Author

Listed:
  • A. Baïri

    (Université de Paris, Laboratoire Thermique Interfaces Environment (LTIE), EA 4415, Département GTE, 50, Rue de Sèvres, F-92410 Ville d’Avray, France)

  • N. Laraqi

    (Université de Paris, Laboratoire Thermique Interfaces Environment (LTIE), EA 4415, Département GTE, 50, Rue de Sèvres, F-92410 Ville d’Avray, France)

Abstract

A nanofluid saturated porous medium is used for cooling purposes of a plane electronic device contained in the base of a hemispherical cavity. According to the intended application in embarked electronics, the base could be tilted with respect to the horizontal plane by an angle ranging from 0∘ to 180∘ (horizontal disc with cupola facing upwards and downwards, respectively). The volume fraction of the considered monophasic water-based ZnO nanofluid varies between 0% (pure water) and 10%, while the Rayleigh number based on the radius of the cavity ranges from 5.21×107 to 7.29×1010. The ratio between the thermal conductivity of the porous medium solid matrix and that of the base fluid varies between 0 and 70. Influence of these four parameters on the average temperature of the active electronic device is presented and commented. The work shows that the saturated porous medium has a significant effect on the thermal state of the electronic device. A correlation is proposed to easily calculate this temperature for any combination of these parameters, which allows thermal sizing for optimal cooling of this assembly used in electronics engineering.

Suggested Citation

  • A. Baïri & N. Laraqi, 2018. "Thermal performance of nanofluid saturated porous medium on cooling electronics contained in an inclined hemispherical enclosure," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 29(06), pages 1-14, June.
    • Handle: RePEc:wsi:ijmpcx:v:29:y:2018:i:06:n:s0129183118500390
    DOI: 10.1142/S0129183118500390
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