A PSEUDOTRANSIENT FINITE-ELEMENT METHOD FOR THE RESOLUTION OF VISCOELASTIC FLUID-FLOW PROBLEMS BY THE METHOD OF CHARACTERISTICS

被引：4

作者：

KABANEMI, KK ^{[1
]}

BERTRAND, F ^{[1
]}

TANGUY, PA ^{[1
]}

AITKADI, A ^{[1
]}

机构：

[1] ECOLE POLYTECH,DEPT GENIE CHIM,UNITE RECH PROCEDES ECOULEMENTS IND,CP 6079,MONTREAL,PQ H3C 3A7,CANADA

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 1994年 / 55卷 / 03期

关键词：

CROUZEIX-RAVIART TRIANGULAR ELEMENT; DECOUPLED METHOD; EVSS FORMULATION; FINITE ELEMENT METHOD; GALERKIN METHOD; METHOD OF CHARACTERISTICS; UZAWA ALGORITHM; VISCOELASTIC FLUID FLOW;

D O I：

10.1016/0377-0257(94)80074-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A pseudo-transient finite element method for the computation of two-dimensional viscoelastic flows using the method of characteristics is presented. The momentum and continuity equations are first solved as a saddle-point problem using the Uzawa algorithm with the viscoelastic stress treated as a fixed body force. The constitutive equation is then integrated with known kinematics using the method of characteristics. Numerical results involving the four-to-one abrupt circular contraction and the flow around a sphere in a tube are presented to assess the validity and the robustness of the proposed approach.

引用

页码：283 / 305

页数：23

共 27 条

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