Deformation of an elastic cell in a uniform stream and in a circulatory flow

Blyth, M. G. and Parau, E. I. ORCID: https://orcid.org/0000-0001-5134-2068 (2013) Deformation of an elastic cell in a uniform stream and in a circulatory flow. IMA Journal of Applied Mathematics, 78 (4). pp. 665-684. ISSN 0272-4960

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Abstract

The deformation of a circular, inextensible elastic cell is examined when the cell is placed into two different background potential flows: a uniform stream and a circulatory flow induced by a point vortex located inside the cell. In a circulatory flow a cell may deform into a mode m shape with m-fold rotational symmetry. In a uniform stream, shapes with two-fold rotational symmetry tend to be selected. In a weak stream a cell deforms linearly into an ellipse with either its major or its minor axis aligned with the oncoming flow. This marks an interesting difference with a bubble with constant surface tension in a uniform stream, which can only deform into a mode 2 shape with its major axis perpendicular to the stream (Vanden-Broeck & Keller, 1980b). In general, as the strength of the uniform stream is increased from zero, solutions emerge continuously from the cell configurations in quiescent fluid found by Flaherty et al. (1972). A richly populated solution space is described with multiple solution branches which either terminate when a cell reaches a state with a point of self-contact or loop round to continuously connect cell states which exist under identical conditions in the absence of flow.

Item Type:	Article
Additional Information:	This is a pre-copy-editing, author-produced PDF of an article accepted for publication in the IMA Journal of Applied Mathematics following peer review. The definitive publisher-authenticated version M.G. Blyth, E.I. Parau, Deformation of an elastic cell in a uniform stream and in a circulatory flow, IMA J. Applied Maths.78(2013), 665-684. DOI: 10.1093/imamat/hxt014 is available online at: http://imamat.oxfordjournals.org/content/78/4/665
Uncontrolled Keywords:	inviscid flow,fluid-structure interaction,elastic cell
Faculty \ School:	Faculty of Science > School of Mathematics (former - to 2024)
UEA Research Groups:	Faculty of Science > Research Groups > Fluid and Solid Mechanics (former - to 2024) Faculty of Science > Research Groups > Fluids & Structures
Depositing User:	Pure Connector
Date Deposited:	05 Nov 2013 17:00
Last Modified:	07 Nov 2024 12:37
URI:	https://ueaeprints.uea.ac.uk/id/eprint/44243
DOI:	10.1093/imamat/hxt014

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