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Published in

SAGE Publications, Journal of Plastic Film and Sheeting, 4(37), p. 463-489, 2021

DOI: 10.1177/8756087920983551

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Mathematical modeling of Johnson-Segalman fluid in blade coating process

Journal article published in 2021 by Marya Kanwal ORCID, Xinhua Wang, Hasan Shahzad ORCID, Muhammad Sajid, Cheng Yiqi
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

This article deals with the blade coating process for Johnson-Segalman (JS) fluid using plane coater. Flow equations are simplified with the Lubrication approximation theory (LAT). The equations are normalized using suitable scales. Reduced equations are solved numerically using the shooting technique. Also, for small Weissenberg numbers, a perturbation solution is obtained. How Weissenberg number and slip parameter influence the pressure gradient, velocity, pressure, load, and thickness are expressed graphically and via table. In the present work, load on the blade is crucial as it controls the thickness quality. One observes that an increased Weissenberg number decreases load, while the coating thickness increases when compared to the viscous case.