Modified finite element solutions for planar entry flow of an Oldroyd-B fluid
Journal
Journal of the Chinese Institute of Chemical Engineers
Journal Volume
29
Journal Issue
6
Pages
397-404
Date Issued
1998
Author(s)
Hwang C.J.
Abstract
In this study a modified finite element method (FEM) is utilized to simulate the 4:1 planar entry flow of an Oldroyd-B fluid. Several numerical techniques are employed, such as the pseudo-transient method, the decoupled approach, the penalty formulation, and streamline upwinding skill, to facilitate calculation of convergent numerical solutions when fluid elasticity is increased. This procedure yields more satisfactory results in that the upper limit of the Weissenberg number, where a convergent solution is obtainable, is much higher.In this study a modified finite element method (FEM) is utilized to simulate the 4:1 planar entry flow of an Oldroyd-B fluid. Several numerical techniques are employed, such as the pseudo-transient method, the decoupled approach, the penalty formulation, and streamline upwinding skill, to facilitate calculation of convergent numerical solutions when fluid elasticity is increased. This procedure yields more satisfactory results in that the upper limit of the Weissenberg number, where a convergent solution is obtainable, is much higher.
Subjects
Boger Fluid
Finite Element Solution
Planar Entry Flow
Type
journal article