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Natural Convection Analysis in a Cavity with an Inclined Elliptical Heater Subject to Shape Factor of Nanoparticles and Magnetic Field

  • Research Article - Mechanical Engineering
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Abstract

The objective of the present study is to peruse the natural convection in the cavity containing inclined elliptical heater under shape factor of nanoparticles and magnetic field. The control volume-based finite element method is used for solving conservation equations. Numerical results show very good grid independency and very good compromise with other works. The result shows the heat transfer grows via mounting nanofluid volume fraction. The increment of Ra number also leads the heat transfer to ascend. Heat transfer of nanofluid with three different shapes of nanoparticles is studied, and results show the platelet nanoparticle is better than the other ones. The influence of magnetic field on heat transfer is also investigated and discussed. The obtained outcomes represent that at a certain Rayleigh number, the average Nusselt number descends with the ascendant of Hartmann number. Finally, the new correlation is reported for calculating the Nu number in these geometries.

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Authors and Affiliations

  1. Department of Mechanical Engineering, Aliabad Katoul Branch, Islamic Azad University, Aliabad Katoul, Iran

    A. S. Dogonchi

  2. Department of Engineering, Mahdishahr Branch, Islamic Azad University, Mahdishahr, Iran

    T. Armaghani

  3. Mechanical Engineering Department, Prince Sultan Endowment for Energy and Environment, Prince Mohammad Bin Fahd University, Al-Khobar, 31952, Saudi Arabia

    Ali J. Chamkha

  4. RAK Research and Innovation Center, American University of Ras Al Khaimah, Ras Al Khaimah, United Arab Emirates

    Ali J. Chamkha

  5. Mechanical Engineering Department, Babol Noshirvani University of Technology, Babol, Iran

    D. D. Ganji

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  1. A. S. Dogonchi
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  2. T. Armaghani
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  3. Ali J. Chamkha
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  4. D. D. Ganji
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Correspondence to A. S. Dogonchi.

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Dogonchi, A.S., Armaghani, T., Chamkha, A.J. et al. Natural Convection Analysis in a Cavity with an Inclined Elliptical Heater Subject to Shape Factor of Nanoparticles and Magnetic Field. Arab J Sci Eng 44, 7919–7931 (2019). https://doi.org/10.1007/s13369-019-03956-x

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