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Entropy generation in MHD nanofluid flow induced by a slendering stretching sheet with activation energy, viscous dissipation and Joule heating impacts

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Abstract

This research article looks at entropy generation and activation energy analysis on hydromagnetic and thermally radiated nanofluid flow generated by a nonlinearly stretching sheet of variable thickness considering heat generation, mixed convection, velocity slip, viscous dissipation, thermal slip, binary chemical reaction and Ohmic dissipation aspects. Governing model equations of continuity, momentum, energy and concentration are converted into ODEs by employing appropriate similarity transformations. The resulting coupled highly nonlinear equations have been solved numerically with the help of the Runge–Kutta–Fehlberg method-based shooting technique. Results obtained for a particular case of the current fluid flow problem are in good agreement with the existing results. The graphical outcomes are discussed for velocity, temperature, entropy generation and concentration regarding various controlling parameters. The impacts of different controlling parameters on the local skin-friction coefficient, local Nusselt and Sherwood numbers are also analyzed and the numerical results are presented in tabular form. The obtained results reveal a reduction in entropy generation for growing values of magnetic and temperature ratio parameters near the solid surface, while a reverse effect is noticed for power-law index and Brinkmann number.

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Acknowledgements

The authors express their sincere thanks to the National Institute of Technology Meghalaya for providing financial support and resources for carrying out the present analysis. Further, the authors would like to thank all the reviewers for their valuable comments and suggestions for improving the quality of the paper.

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  1. Department of Mathematics, National Institute of Technology Meghalaya, Shillong, 793003, India

    S Nandi & B Kumbhakar

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  1. S Nandi
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  2. B Kumbhakar
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Correspondence to B Kumbhakar.

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Nandi, S., Kumbhakar, B. Entropy generation in MHD nanofluid flow induced by a slendering stretching sheet with activation energy, viscous dissipation and Joule heating impacts. Indian J Phys 96, 2873–2892 (2022). https://doi.org/10.1007/s12648-021-02206-x

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  • DOI: https://doi.org/10.1007/s12648-021-02206-x

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