Journal
JOURNAL OF NON-NEWTONIAN FLUID MECHANICS
Volume 165, Issue 19-20, Pages 1204-1218Publisher
ELSEVIER
DOI: 10.1016/j.jnnfm.2010.06.005
Keywords
Two-dimensional collapsible channel flow; Viscoelastic fluid flow; Fluid-structure interactions; Blood flow; Conformation tensor models; Finite element method
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Funding
- Australian Research Council
- National Science Foundation of the USA [DMS-0811160]
- NSF [EIA-0216467, CNS-0421109, CNS-0821727]
- Sun
- Sigma Solutions
- AMD
- Cray
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We compute the flow of three viscoelastic fluids (Oldroyd-B, FENE-P, and Owens blood model) in a two-dimensional channel partly bounded by a tensioned membrane, a benchmark geometry for fluid-structure interactions. The predicted flow patterns are compared to those of a Newtonian liquid. We find that computations fail beyond a limiting Weissenberg number. Flow fields and membrane shape differ significantly because of the different degree of shear thinning and molecular extensibility underlying the three different microstructural models. (C) 2010 Elsevier B.V. All rights reserved.
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