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Blade coating analysis of a viscoelastic Carreau fluid using Adomian decomposition method

Author

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  • Bhatti, Saira
  • Zahid, Muhammad
  • Ali, Rifaqat
  • Sarwar, Albesha
  • Wahab, Hafiz A.

Abstract

In this paper, a mathematical model of the blade coating of the viscoelastic Carreau fluid which passes through the gap between the fixed blade and the moving substrate is constructed. The governing equations in the light of LAT (Lubrication Approximation Theory) are nondimensionalized and the solutions for the velocity, volumetric flow rate and the pressure gradient are calculated using Adomian decomposition method and numerical method. Numerical results for the velocity distribution using shooting method have also been studied by taking the full lubrication equation without taking the binomial expansion. Some important quantities from the industrial point of view like pressure, shear stress, Nusselt number and skin friction coefficient are also calculated. The important results are graphically shown at the end. With exponential blade coater, we have calculated velocity profiles, pressure, coating thickness and blade loading. Some of these results are shown graphically while other are presented in the tabulated form.

Suggested Citation

  • Bhatti, Saira & Zahid, Muhammad & Ali, Rifaqat & Sarwar, Albesha & Wahab, Hafiz A., 2021. "Blade coating analysis of a viscoelastic Carreau fluid using Adomian decomposition method," Mathematics and Computers in Simulation (MATCOM), Elsevier, vol. 190(C), pages 659-677.
    • Handle: RePEc:eee:matcom:v:190:y:2021:i:c:p:659-677
    DOI: 10.1016/j.matcom.2021.04.027
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