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Erschienen in: Arabian Journal for Science and Engineering 11/2020

25.07.2020 | Research Article-Mechanical Engineering

Novel Physical Insights into the Thermodynamic Irreversibilities Within Dissipative EMHD Fluid Flows Past over a Moving Horizontal Riga Plate in the Coexistence of Wall Suction and Joule Heating Effects: A Comprehensive Numerical Investigation

verfasst von: Abderrahim Wakif, Ali Chamkha, I. L. Animasaun, M. Zaydan, Hassan Waqas, R. Sehaqui

Erschienen in: Arabian Journal for Science and Engineering | Ausgabe 11/2020

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Abstract

In the case of an electro-magneto-hydrodynamic actuator, little is known about the thermo-magneto-hydrodynamic irreversibilities arising in the dissipative flows of weakly conducting fluids past over a moving Riga plate. In this study, the electro-magneto-hydrodynamic convective flow features of a viscous electrically conducting fluid over a horizontal Riga plate are deliberated comprehensively by considering the wall suction and Joule heating effects. It is assumed that the permanent magnets are of equal width and mounted alternatively on a plane surface. Due to the electromagnetic proprieties of the Riga plate, the exponentially decaying Grinberg term is included in the momentum conservation equation as a resistive drag force in this investigation. The modeled differential equations were non-dimensionalized and simplified mathematically by utilizing suitable dimensionless variables and adopting admissible physical assumptions. Numerical solutions were established herein by utilizing an efficient algorithm based on the generalized differential quadrature method and the Newton–Raphson iterative technique. It is worth concluding that the presence of the wall suction effect enhances noticeably the heat transfer rate and its thermodynamic irreversibility near the Riga plate, while a reverse feature is depicted with the elevating strengths of the magnetization field.

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Metadaten
Titel
Novel Physical Insights into the Thermodynamic Irreversibilities Within Dissipative EMHD Fluid Flows Past over a Moving Horizontal Riga Plate in the Coexistence of Wall Suction and Joule Heating Effects: A Comprehensive Numerical Investigation
verfasst von
Abderrahim Wakif
Ali Chamkha
I. L. Animasaun
M. Zaydan
Hassan Waqas
R. Sehaqui
Publikationsdatum
25.07.2020
Verlag
Springer Berlin Heidelberg
Erschienen in
Arabian Journal for Science and Engineering / Ausgabe 11/2020
Print ISSN: 2193-567X
Elektronische ISSN: 2191-4281
DOI
https://doi.org/10.1007/s13369-020-04757-3

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