Committee Chair

Anderson, W. Kyle

Committee Member

Nichols, Stephen; Melnik, Robert

Department

Dept. of Computational Engineering

College

College of Engineering and Computer Science

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

An approach for desigining arterial stents to maximize wall shear stress is presented. A cost equation to maximize wall shear stress is derived and then inverted into a minimization problem for the optimizer. A 2-D mixed-element finite-volume scheme for solving the compressible Navier-Stokes equations is implemented. A paramaterization of the cross- sectional shape of the stent wire using Hicks-Henne functions is described. The strategies used in the commercial optimization software, DAKOTA, to minimize the cost equation are described. The solver is validated using well known fluid flow test cases and is shown to match other published computed results for bloodflow through stented arteries. New candidate stent shapes are produced by the optimization and are evaluated based on comparison to modern commercial stent designs.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

12-2013

Subject

Stents (Surgery); Stents (Surgery) -- Fluid dynamics

Keyword

Computational design; Arterial stents; Computational blood flow; CFD

Discipline

Applied Mathematics | Computational Engineering

Document Type

Masters theses

Extent

xiv, 77 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by-nc-nd/3.0/

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