Non-isothermal radial filling of center-gated disc cavities with viscoelastic polymer melts
type: Item
instance of: scholarly article
title: Non-isothermal radial filling of center-gated disc cavities with viscoelastic polymer melts
zbMATH Open document ID: 0666.76028
DOI: 10.1016/0377-0257(88)87007-1
author: S. H. Smith
published in: Journal of Non-Newtonian Fluid Mechanics
publication date: 1988-01-01T00:00:00Z
review text: A comprehensive two-dimensional mathematical model is developed for injection mold filling of disc-shaped cavities. The model takes into account the effects of viscoelasticity, non-isothermality, fountain flow and the shape of the flow front. A new variable slip boundary condition is used to avoid discontinuities in the flow structure and to maintain the shape of the flow front. The predictive capabilities of the model include radial and transverse velocities, pressures, temperatures, shear stresses and the first- and second-normal stress differences throughout the filling stage. Results of the simulations, obtained using the White- Metzner (viscoelastic) and the generalized Power-law (inelastic) constitutive equations, indicate that the viscoelasticity does not significantly affect the velocity and temperature profiles; however its effect on the stress distributions is substantial.
Mathematics Subject Classification ID: 76A10
zbMATH DE Number: 4091001
zbMATH Keywords: two-dimensional mathematical model
zbMATH Keywords: injection mold filling
zbMATH Keywords: disc-shaped cavities
zbMATH Keywords: viscoelasticity
zbMATH Keywords: non-isothermality, fountain flow
zbMATH Keywords: radial and transverse velocities, pressures, temperatures, shear stresses
zbMATH Keywords: first- and second-normal stress differences
zbMATH Keywords: White-Metzner (viscoelastic)
zbMATH Keywords: generalized Power-law (inelastic) constitutive equations
MaRDI profile type: Publication
full work available at URL: 0377-0257(88)87007-1
OpenAlex ID: W2052745106
description: scientific article; zbMATH DE number 4091001