On vortex development in viscoelastic expansion and contraction flows

被引：56

作者：

Baloch, A ^{[1
]}

Townsend, P ^{[1
]}

Webster, MF ^{[1
]}

机构：

[1] UNIV COLL SWANSEA,DEPT COMP SCI,INST NON NEWTONIAN FLUID MECH,SWANSEA SA2 8PP,W GLAM,WALES

来源：

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS | 1996年 / 65卷 / 2-3期

关键词：

expansion and contraction flows; finite elements; viscoelastic flow; vortex development;

D O I：

10.1016/0377-0257(96)01470-X

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Vortex structure and formation are investigated for both expansion and contraction flows of viscoelastic fluids concentrating on a class of constitutive models due to Phan-Thien and Tanner. Expansion flows are treated in both two and three dimensions, and viscoelasticity is observed to suppress vortex activity. Two-dimensional contraction flows are analysed for highly elastic solutions. Different geometric aspect ratios, levels of inertia and elasticity are considered for these various flows and lip vortices are observed under certain circumstances.

引用

页码：133 / 149

页数：17

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