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Open AccessArticle

Numerical Analysis of Carbon Nanotube-Based Nanofluid Unsteady Flow Amid Two Rotating Disks with Hall Current Coatings and Homogeneous–Heterogeneous Reactions

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Department of Computer Science, Bahria University, 44000 Islamabad, Pakistan
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Department of Mechanical Engineering, Sejong University, Seoul 143-747, Korea
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Department of Mathematics and Computer Science, Faculty of Science, Beirut Arab University, Beirut 115020, Lebanon
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Department of ICT Convergence Rehabilitation Engineering, Soonchunhyang University, Asan 31538, Korea
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Department of Computer Science and Engineering, Soonchunhyang University, Asan 31538, Korea
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College of Natural and Health Sciences, Zayed University, 144543 Abu Dhabi, UAE
*
Authors to whom correspondence should be addressed.
Coatings 2020, 10(1), 48; https://doi.org/10.3390/coatings10010048
Received: 20 November 2019 / Revised: 21 December 2019 / Accepted: 4 January 2020 / Published: 5 January 2020
(This article belongs to the Special Issue Recent Trends in Coatings and Thin Film–Modeling and Application)
In the present exploration, our objective is to investigate the importance of Hall current coatings in the establishment of Cattaneo–Christov (CC) heat flux model in an unsteady aqueous-based nanofluid flow comprising single (SWCNTs) and multi-walled (MWCNTs) carbon nanotubes (CNTs) amid two parallel rotating stretchable disks. The novelty of the presented model is strengthened with the presence of homogeneous-heterogeneous (HH) reactions and thermal stratification effects. The numerical solution of the system of coupled differential equations with high nonlinearity is obtained by applying the bvp4c function of MATLAB software. To corroborate the authenticity of the present envisioned mathematical model, a comparison table is added to this study in limiting case. An excellent harmony between the two results is obtained. Effects of numerous parameters on involved distributions are displayed graphically and are argued logically in the light of physical laws. Numerical values of coefficient of drag force and Nusselt number are also tabulated for different parameters. It is observed that tangential velocity (function of rotation parameter) is increasing for both CNTs. Further, the incremental values of thermal stratification parameter cause the decrease in fluid temperature parameter.
Keywords: coatings; Hall current; Catttaneo-Christov heat flux; carbon nanotubes; homogeneous–heterogeneous reactions. coatings; Hall current; Catttaneo-Christov heat flux; carbon nanotubes; homogeneous–heterogeneous reactions.
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MDPI and ACS Style

Ramzan, M.; Riasat, S.; Kadry, S.; Kuntha, P.; Nam, Y.; Howari, F. Numerical Analysis of Carbon Nanotube-Based Nanofluid Unsteady Flow Amid Two Rotating Disks with Hall Current Coatings and Homogeneous–Heterogeneous Reactions. Coatings 2020, 10, 48.

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