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Soret, heat generation, radiation and porous effects on MHD free convection flow past an infinite plate with oscillating temperature

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Abstract

The magnetohydrodynamic flow of a viscous incompressible fluid past an infinite vertical plate surrounded by a porous medium has been analytically investigated during natural convection. The heat and mass transfer characteristics are examined in the presence of heat generation, chemical reaction, thermal radiation, and Soret effect. An oscillating temperature of the plate is considered about a constant mean temperature. The Laplace transform technique is applied to solve the governing system of coupled partial differential equations. The concentration, velocity, penetration distance, skin-friction, Nusselt number, and Sherwood number results are obtained from the solutions and thoroughly discussed. The results exhibit that the velocity and the penetration distance enhance with an increase in Soret number, whereas the skin-friction decreases with increasing Soret number. The heat transfer rate enhances with the escalation of radiation parameter but diminishes with the increase of phase angle. It is also seen that the rate of mass transfer is occurring from fluid to the plate surface in the presence of Soret effect and surface temperature oscillations.

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Acknowledgements

The first three authors greatly acknowledge the financial support from the Ministry of Higher Education (MOHE), Malaysia, under the Fundamental Research Grant Scheme (FRGS/1/2012/TKO1/UTP/02/06).

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Authors and Affiliations

  1. Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia

    Marneni Narahari

  2. Department of Mathematics, PDA College of Engineering, Kalaburagi, Karnataka, 585102, India

    Sowmya Tippa

  3. Chemical Engineering Department, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak Darul Ridzuan, Malaysia

    Rajashekhar Pendyala

  4. Academy of Romanian Scientists, 050094, Bucharest, Romania

    Constantin Fetecau

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  1. Marneni Narahari
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  2. Sowmya Tippa
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  4. Constantin Fetecau
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Correspondence to Marneni Narahari.

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Narahari, M., Tippa, S., Pendyala, R. et al. Soret, heat generation, radiation and porous effects on MHD free convection flow past an infinite plate with oscillating temperature. J Therm Anal Calorim 143, 2525–2543 (2021). https://doi.org/10.1007/s10973-020-10229-5

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  • DOI: https://doi.org/10.1007/s10973-020-10229-5

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