A novel hybrid numerical technique to model 3-D fountain flow in injection molding processes
type: Item
instance of: scholarly article
title: A novel hybrid numerical technique to model 3-D fountain flow in injection molding processes
zbMATH Open document ID: 0791.76055
DOI: 10.1016/0377-0257(93)85001-Q
author: B. Friedrichs
author: Selçuk I. Güçeri
published in: Journal of Non-Newtonian Fluid Mechanics
publication date: 1994-07-11T00:00:00Z
review text: A hybrid two-dimensional/three-dimensional numerical technique is presented to examine three-dimensional fountain flow in thin cavities which are encountered in injection molding process. At the flow points, where all the three components of velocity are significant, the authors use a pressure Poisson formulation to solve the equations. Behind the flow front, a two-dimensional Hele-Shaw type formulation is used leading to a ``hammerhead'' approach. Authors have achieved significant reduction in nodes due to the small size of three-dimensional flow region. The governing equations have been solved on a non-staggered grid using boundary fitted coordinate systems in conjunction with the finite difference technique. This formulation is capable of handling material nonlinearities due to shear-thinning behaviour of typical thermoplastic resin systems. Authors have obtained the results for the isothermal filling of diverging and covering cavity sections using a shear-thinning and a Newtonian resin. A comparison with two-dimensional numerical and experimental studies has also been made.
Mathematics Subject Classification ID: 76M20
Mathematics Subject Classification ID: 76A05
zbMATH DE Number: 484624
zbMATH Keywords: thin cavities
zbMATH Keywords: pressure Poisson formulation
zbMATH Keywords: Hele-Shaw type formulation
zbMATH Keywords: non-staggered grid
zbMATH Keywords: boundary fitted coordinate systems
zbMATH Keywords: material nonlinearities
zbMATH Keywords: shear-thinning
zbMATH Keywords: thermoplastic resin
reviewed by: S. C. Rajvanshi
MaRDI profile type: Publication
full work available at URL: 0377-0257(93)85001-q
OpenAlex ID: W2011372723
description: scientific article; zbMATH DE number 484624