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Author(s): Luísa C. Sousa
Catarina F. Castro
Carlos C. António
Title: Shape optimization of an artificial bypass graft using genetic algorithm
Issue Date: 2010
Abstract: Shape optimization has been applied in medical engineering. It is our goal to establish an optimization frameworksuited to perform shape optimization of complex geometries in compute-intensive applications. In medicalpractice, bypass grafts provide a way to restore blood flow in critically stenosed arteries, and, together withstenting, constitute the most typical treatment in such cases.In this work, the numerical analysis of the blood flow phenomena uses the finite element method approach appliedto a geometrical model of the artery and bypass. Blood flow is described by the incompressible Navier-Stokesequations and the simulation is carried out under steady flow conditions. The optimization of the bypass geometryof an idealized artificial graft is searched aiming to minimize the shear rate integral. The shapes are describedeither using elliptical or sinusoidal functions. An evolutionary genetic algorithm is considered in order to calculatethe optimal shape for the graft geometry. Numerical results show the benefits of numerical shape optimization inachieving design improvements.
Subject: Ciências Tecnológicas, Outras ciências da engenharia e tecnologias
Technological sciences, Other engineering and technologies
Scientific areas: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
Source: EngOpt 2010
Document Type: Artigo em Livro de Atas de Conferência Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Livro de Atas de Conferência Internacional

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