Viscoelastic flow past a cylinder: drag coefficient

被引：36

作者：

Phan-Thien, N ^{[1
]}

Dou, HS ^{[1
]}

机构：

[1] Univ Sydney, Dept Mech & Mechatron Engn, Sydney, NSW 2006, Australia

来源：

COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 1999年 / 180卷 / 3-4期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/S0045-7825(99)00168-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The channel flow of a viscoelastic fluid past a circular cylinder is simulated using a parallelized unstructured Finite Volume Method (FVM) [H.-S. Dou, N. Phan-Thien, J. Non-Newtonian Fluid Mech. 77 (1998) 21-51] under a distributed computing environment through the Parallel Virtual Machine (PVM) libraries. The numerical method is based on the SIMPLER (Semi-Implicit Method for Pressure-Linked Equations Revised) algorithm, using the simplified Phan-Thien/Tanner (PTT) and the Upper Convective Maxwell (UCM) constitutive models, with the Elastic Viscous Split Stress (EVSS) formulation. The parallelization of the program is implemented by a domain decomposition strategy and the PVM software. It is found that the both shear thinning and normal stress contribute to the drag reduction. With the PTT model, the drag reduction is mainly due to shear thinning. With the UCM model, it is primarily due to the normal stress effect. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：243 / 266

页数：24

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