Authors Pavlidis M., Dimakopoulos Y., Tsamopoulos J. Abstract The one-dimensional, gravity-driven film flow of a linear (l) or exponential (e) Phan-Thien and Tanner (PTT) liquid, flowing either on the outer or on the inner surface of a vertical cylinder or over a planar wall, is analyzed. Numerical solution of the […]
PTT constitutive models
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Authors Housiadas K.D., Klidis G., Tsamopoulos J. Abstract We examine the film blowing process (FBP), which is widely used for manufacturing biaxially stretched films of polymeric materials. The viscoelastic property of the material is taken into account by employing the Upper Convected Maxwell, the Oldroyd-B or the Phan-Thien and Tanner […]
Authors Foteinopoulou K., Mavrantzas V.G., Tsamopoulos J. Abstract Numerical results are presented concerning bubble growth in Newtonian and viscoelastic filaments undergoing stretching. In practice, such bubbles or cavities develop in materials (either in their bulk or at their interface with a substrate) such as the pressure sensitive adhesives. The problem […]