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Article

Theoretical Analysis of Roll-Over-Web Surface Thin Layer Coating

1
Energy Research Centre, COMSATS University Islamabad, Lahore Campus 54000, Pakistan
2
Institute of Energy and Environmental Engineering, University of the Punjab, Lahore 54590, Pakistan
3
School of Systems and Technology, University of Management and Technology, Lahore 54000, Pakistan
4
Department of Mathematics, COMSATS University Islamabad, Lahore 54000, Pakistan
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Department of Energy Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology, Taxila 47050, Pakistan
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Department of Computer Science, Information Technology University, Lahore 54000, Pakistan
7
Department of Electronic Engineering, Faculty of Applied Energy System, Jeju National University, Jeju Special Self-Governing Province, Jeju-si 63243, Korea
*
Authors to whom correspondence should be addressed.
These authors contributed equally to this work.
Coatings 2020, 10(7), 691; https://doi.org/10.3390/coatings10070691
Received: 13 May 2020 / Revised: 30 June 2020 / Accepted: 13 July 2020 / Published: 17 July 2020
(This article belongs to the Section Surface Characterization, Deposition and Modification)
This study presents the theoretical investigation of a roll-over thin layer formation under the lubrication approximation theory. The set of differential equations derived by lubrication approximation is solved by the optimal homotopy asymptotic method (OHAM) to obtain precise expressions for pressure and velocity gradients. Critical quantities such as velocity, pressure gradient, and coating layer depth are numerically estimated. The impact of parameters affecting the coating and layer formation is revealed in detail. Results indicate that the transport properties of the higher-grade fluid play an essential role in regulating velocity, pressure, and the final coated region. Moreover, couple stress effects on the properties of fluid particles to be coated on roller-surface have also been studied. View Full-Text
Keywords: roll-over-web coating; couple stress fluid; lubrication approximation theory; optimal homotopy asymptotic method (OHAM) roll-over-web coating; couple stress fluid; lubrication approximation theory; optimal homotopy asymptotic method (OHAM)
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MDPI and ACS Style

Manzoor, T.; Zafar, M.; Iqbal, S.; Nazar, K.; Ali, M.; Saleem, M.; Manzoor, S.; Kim, W.Y. Theoretical Analysis of Roll-Over-Web Surface Thin Layer Coating. Coatings 2020, 10, 691. https://doi.org/10.3390/coatings10070691

AMA Style

Manzoor T, Zafar M, Iqbal S, Nazar K, Ali M, Saleem M, Manzoor S, Kim WY. Theoretical Analysis of Roll-Over-Web Surface Thin Layer Coating. Coatings. 2020; 10(7):691. https://doi.org/10.3390/coatings10070691

Chicago/Turabian Style

Manzoor, Tareq, Muhammad Zafar, Shaukat Iqbal, Kashif Nazar, Muddassir Ali, Mahmood Saleem, Sanaullah Manzoor, and Woo Young Kim. 2020. "Theoretical Analysis of Roll-Over-Web Surface Thin Layer Coating" Coatings 10, no. 7: 691. https://doi.org/10.3390/coatings10070691

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