A new algorithm for non-newtonian flow and its application in mould filling process |
| |
Authors: | Xian-hong Han Xiao Kong Xiong-hui Zhou Xi-kui Li |
| |
Institution: | (1) Novosibirsk State University, Novosibirsk, 630090, Russia;(2) Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch of Russian Academy of Sciences, Novosibirsk, 630090, Russia |
| |
Abstract: | The simulation of injection molding process requires a stable algorithm to model the molten polymer with non-isothermal non-Newtonian
property. In this paper, a staggered and iterative scheme is particularly designed to solve the velocity-pressure-temperature
variables. In consideration of the polymer characteristic of high viscosity and low thermal conductivity, the non-Newtonian
momentum-mass conservation equations are solved by the Crank-Nicolson method based split (CNBS) scheme, and the energy conservation
equation with convective character is discretized by the characteristic Galerkin (CG) method. In addition, an arbitrary Lagrangian
Eulerian (ALE) free surface tracking and mesh generation method is introduced to catch the front of the fluid flow. The efficiency
of the proposed scheme is demonstrated by numerical experiments including a lid-driven cavity flow problem and an injection
molding problem. |
| |
Keywords: | non-Newtonian flow injection molding finite element method fractional step algorithm |
本文献已被 CNKI 维普 SpringerLink 等数据库收录! |
|