Magneto-radiative gas near an unsmooth boundary with variable temperature
International Journal of Numerical Methods for Heat & Fluid Flow
ISSN: 0961-5539
Article publication date: 18 August 2022
Issue publication date: 5 January 2023
Abstract
Purpose
This paper aims to study the magneto-radiative gas (water vapor) on an unsmooth boundary.
Design/methodology/approach
This paper provided a numerical treatment via the implicit Chebyshev pseudo-spectral method to investigate unsteady compressible magneto-radiative gas (water vapor Pr = 1) flow near a heated vertical wavy wall through porous medium in the presence of inclined magnetic field. The impacts of viscous dissipation, temperature-dependent fluid properties, thermal conductivity and viscosity in the presence of nonlinear thermal radiation are studied. The sinusoidal surface is transformed into a flat one using a suitable transformation. The comparison figures of published data with the present outcomes illustrate a good match. The present steady-state outcomes are presented for the temperature, velocity, Nusselt number and the shearing stress through figures for several interested physical parameters, namely, compressibility, magnetic, radiation, viscosity–temperature variation, thermal conductivity–temperature variation, surface sinusoidal waveform and porous parameters.
Findings
The present numerical outcomes confirm the importance of applying nonlinear thermal radiation cases in all studies that investigate heat transfer under the influence of thermal radiation.
Originality/value
A mathematical model is established for a wavy boundary, and Chebyshev pseudo-spectral method is adopted for the numerical study.
Keywords
Acknowledgements
The authors are thankful to all reviewers for their valuable, encouraging comments, and constructive suggestions to improve the original article.
Funding: The author received no financial support of the research, authorship, and/or publication of this article.
Citation
He, J.-H., Elgazery, N.S. and Abd Elazem, N.Y. (2023), "Magneto-radiative gas near an unsmooth boundary with variable temperature", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 33 No. 2, pp. 545-569. https://doi.org/10.1108/HFF-05-2022-0285
Publisher
:Emerald Publishing Limited
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