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Effect of Porous Medium and Copper Heat Sink on Cooling of Heat-Generating Element

Author

Listed:
  • Marina Astanina

    (Laboratory on Convective Heat and Mass Transfer, Tomsk State University, 634050 Tomsk, Russia)

  • Mikhail Sheremet

    (Laboratory on Convective Heat and Mass Transfer, Tomsk State University, 634050 Tomsk, Russia)

  • U. S. Mahabaleshwar

    (Department of Mathematics, Davangere University, Shivagangothri, Davangere 577007, India)

  • Jitender Singh

    (Department of Mathematics, Guru Nanak Dev University, Amritsar 143005, India)

Abstract

Cooling of heat-generating elements is a challenging problem in engineering. In this article, the transient free convection of a temperature-dependent viscosity liquid inside the porous cavity with copper radiator and the heat-generating element is studied using mathematical modeling techniques. The vertical and top walls of the chamber are kept at low constant temperature, while the bottom wall is kept adiabatic. The working fluid is a heat-conducting liquid with temperature-dependent viscosity. A mathematical model is developed based on dimensionless stream function, vorticity, and temperature variables. The governing properties are the variable viscosity, geometric parameters of the radiator, and size of thermally insulated strip on vertical surfaces of the cavity. The effect of these parameters on the energy transport and circulation patterns are analyzed numerically. Based on the numerical results obtained, recommendations are given on the optimal values of the governing parameters for the effective operation of the cooling system. It is shown that the optimal number of radiator fins for the cooling system configuration under consideration is 3. In addition, the thermal insulation of the vertical walls and the increased thickness of the radiator fins have a negative effect on the operation of the cooling system.

Suggested Citation

  • Marina Astanina & Mikhail Sheremet & U. S. Mahabaleshwar & Jitender Singh, 2020. "Effect of Porous Medium and Copper Heat Sink on Cooling of Heat-Generating Element," Energies, MDPI, vol. 13(10), pages 1-15, May.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:10:p:2538-:d:359207
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    1. Tlili, Iskander & Bhatti, M.M. & Hamad, Samir Mustafa & Barzinjy, Azeez A. & Sheikholeslami, M. & Shafee, Ahmad, 2019. "Macroscopic modeling for convection of Hybrid nanofluid with magnetic effects," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 534(C).
    2. Hashem Zadeh, S.M. & Sabour, M. & Sazgara, S. & Ghalambaz, M., 2020. "Free convection flow and heat transfer of nanofluids in a cavity with conjugate solid triangular blocks: Employing Buongiorno’s mathematical model," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 538(C).
    3. Rashidi, Saman & Kashefi, Mohammad Hossein & Kim, Kyung Chun & Samimi-Abianeh, Omid, 2019. "Potentials of porous materials for energy management in heat exchangers – A comprehensive review," Applied Energy, Elsevier, vol. 243(C), pages 206-232.
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    1. Mohammad Ghalambaz & Mohammad Shahabadi & S. A. M Mehryan & Mikhail Sheremet & Obai Younis & Pouyan Talebizadehsardari & Wabiha Yaici, 2021. "Latent Heat Thermal Storage of Nano-Enhanced Phase Change Material Filled by Copper Foam with Linear Porosity Variation in Vertical Direction," Energies, MDPI, vol. 14(5), pages 1-20, March.

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