Three-dimensional viscoelastic flows through a rectangular channel with a cavity

被引：15

作者：

Yamamoto, T ^{[1
]}

Ishiyama, M ^{[1
]}

Nakajima, M ^{[1
]}

Nakamura, K ^{[1
]}

Mori, N ^{[1
]}

机构：

[1] Osaka Univ, Dept Mechanophys Engn, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 2003年 / 114卷 / 01期

关键词：

viscoelastic flows; three-dimensional flows; Phan-Thien-Tanner model; finite volume method; numerical analysis; cavity; FINITE-VOLUME METHOD; THIEN-TANNER FLUID; PLANAR CONTRACTION; NUMERICAL-SIMULATION; ENTRY FLOW; AXISYMMETRICAL CONTRACTION; FORCED-CONVECTION; ELASTIC LIQUIDS; INSTABILITIES; EXPANSION;

D O I：

10.1016/S0377-0257(03)00115-0

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Three-dimensional viscoelastic flows in a rectangular channel with a cavity were studied both numerically and experimentally. In the numerical study, computations were carried out using the Phan-Thien-Tanner (PTT) model as a constitutive equation. A finite volume method (FVM) using colocated grids was applied. A three-dimensional structure in the cavity was observed even when three-dimensional behavior was not remarkable in main flows. At high Weissenberg number, the flow in the cavity spirals to move towards the center plane of the channel. In the experiments, the flow of polymer solutions was visualized to observe three-dimensional flow behavior near the cavity part. It was confirmed that the spiraling flow moving towards the center plane emerged in the cavity. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：13 / 31

页数：19

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