On the effects of viscoelasticity on two-dimensional vortex dynamics in the cylinder wake

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Sahin M., OWENS R.

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS, vol.123, pp.121-139, 2004 (SCI-Expanded)

• Publication Type: Article / Article
• Volume: 123
• Publication Date: 2004
• Doi Number: 10.1016/j.jnnfm.2004.08.002
• Journal Name: JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
• Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Page Numbers: pp.121-139
• Istanbul Technical University Affiliated: No

Abstract

The present paper represents, as far as we are aware, the first linear stability analysis for inertial flows of a viscoelastic fluid around a bluff body. Our particular interest is the effect of polymer additives on the linear stability of two-dimensional viscous flow past a confined cylinder and our investigation involves both direct numerical simulation and the solution of a generalized eigenvalue problem arising from the linearized perturbation equations.