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Numerical Analysis of Flow Behavior in Meniscus Region of Viscoelastic Dip Coating Flows

机译:Numerical Analysis of Flow Behavior in Meniscus Region of Viscoelastic Dip Coating Flows

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摘要

Flow behavior in a meniscus region in viscoelastic dip coating flows was numerically analyzed using a finite element method. The Phan-Thien Tanner (PTT) model was used as a constitutive equation. The problem considered was a flow around a rod withdrawn from a viscoelastic liquid in a cylindrical reservoir. Both the velocity and stress fields were analyzed for three kinds of PTT fluids that were different in elongational properties. The profile of meniscus formed between the moving rod and the liquid level became thinner at higher withdrawal velocity and for a fluid having stronger stretch-thickening property of elongational viscosity.

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