DYNAMICAL MODELING OF VISCOELASTIC EXTRUSION FLOWS

被引：16

作者：

YUAN, XF ^{[1
]}

BALL, RC ^{[1
]}

EDWARDS, SF ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,CAVENDISH LAB,CAMBRIDGE CB3 0HE,ENGLAND

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 1994年 / 54卷

关键词：

DELAUNAY TRIANGULATION; DYNAMICAL MODELING; EXTRUSION FLOWS; FREE JET FLOWS; LAGRANGIAN-EULERIAN SIMULATION; OLDROYD-B FLUID; PHAN-THIEN-TANNER FLUID; VORONOI TESSELLATION;

D O I：

10.1016/0377-0257(94)80034-0

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A Lagrangian-Eulerian simulation technique has been applied to model viscoelastic extrusion flow. The essential feature of our method is to track explicitly the motion of fluid elements in a Lagrangian fashion and to solve fluid fields on a comoving grid in an Eulerian manner at each physical time step. The method is able to track the details of fluid, e.g. deformation and stream line, and also to advance free surfaces in a physical way. Results are presented for the time-dependent flow from rest of both Oldroyd-B and PTT (Phan-Thien and Tanner) fluids, through a planar 2:1 abrupt contraction and in free jet flows.

引用

页码：423 / 435

页数：13

共 15 条

[1]

[Anonymous], 1987, DYNAMICS POLYM LIQUI

[2]

Bird RB, 1987, DYNAMICS POLYM LIQUI, V91, P1397, DOI DOI 10.1016/0377-0257(78)80009-3

[3] A NUMERICAL STUDY OF EXTRUDATE SWELL IN VERY DILUTE POLYMER-SOLUTIONS REPRESENTED BY THE OLDROYD-B MODEL [J].