FEATURES OF THE NONISOTHERMAL VISCOELASTIC JET FLOW THROUGH A MOLDING EXTENSION

We have investigated the steady creeping nonisothermal fl uid fl ow with free surface for a polymer fl uid at the inlet to the molding channel and at its outlet. The fl uid motion is described by the mass, momentum, and energy equations complemented by the constitutive Giesekus equation of the fl uid state. We have analyzed the distribution pattern of the fl uid velocity in the outfl owing jet and the pressure, stress, and temperature fi elds with increasing degree of heating of the molding channel wall. We present the results of calculating the dependence of the swelling coeffi cient of the polymer fl uid on the extension geometry, the rheological model parameters, and the temperature factors.
   
Author:  B. A. Snigerev
Keywords:  viscoelastic incompressible fluid, Giesekus rheological model, nonisothermal flow with free surface
Page:  230