Flow instabilities of Herschel-Bulkley fluids

被引：43

作者：

Alexandrou, AN

Le Menn, P

Georgiou, G

Entov, V

机构：

[1] Univ Cyprus, Dept Mech & Mfg Engn, CY-1678 Nicosia, Cyprus

[2] Worcester Polytech Inst, Semisolid Met Proc Lab, MPI, Worcester, MA 01609 USA

[3] Univ Cyprus, Dept Math & Stat, CY-1678 Nicosia, Cyprus

[4] Russian Acad Sci, Inst Problems Mech, Moscow 117526, Russia

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 2003年 / 116卷 / 01期

关键词：

Bingham plastic; Herschel-Bulkley model; cavity filling; stability; finite elements;

D O I：

10.1016/S0377-0257(03)00113-7

中图分类号：

O3 [力学];

学科分类号：

08 [工学]; 0801 [力学];

摘要：

We investigate numerically the interactions of two-dimensional jets of Bingham plastic and Herschel-Bulkley fluids with a vertical surface at a distance from the die exit. This problem simulates the early stages of filling of a planar cavity. Our main objective is to explain the flow instabilities observed during the processing of semisolid materials. The effects of the Reynolds and Bingham numbers and of the inlet boundary conditions on both the filling and the stability of the jet are established by means of numerical time-dependent calculations. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：19 / 32

页数：14

共 25 条

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