Defect correction method for time-dependent viscoelastic fluid flow

被引：14
|
作者：
Zhang, Yunzhang [1 ]
Hou, Yanren [1 ]
Mu, Baoying [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Sci, Xian 710049, Peoples R China
来源：
INTERNATIONAL JOURNAL OF COMPUTER MATHEMATICS | 2011年 / 88卷 / 07期
基金：
中国国家自然科学基金;
关键词：
viscoelastic fluid flow; finite element; time dependent; defect correction method; discontinuous Galerkin; error estimate; Weissenberg number; NAVIER-STOKES EQUATIONS; SCHEME; FEM;
D O I：
10.1080/00207160.2010.521549
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
A defect correction method for solving the time-dependent viscoelastic fluid flow, aiming at high Weissenberg numbers, is presented. In the defect step, the constitutive equation is computed with the artificially reduced Weissenberg parameter for stability, and the residual is considered in the correction step. We show the convergence of the method and derive an error estimate. Numerical experiments support the theoretical results and demonstrate the effectiveness of the method.
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页码：1546 / 1563
页数：18
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