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Structural and Multidisciplinary Optimization

Erschienen in:

01.03.2015 | Medical and Bioengineering Application

Topology optimization study of arterial bypass configurations using the level set method

verfasst von: Bin Zhang, Xiaomin Liu

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 3/2015

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Abstract

We studied the arterial bypass design problem using a level set based topology optimization method. The blood flow in the artery was considered as the non-Newtonian flow governed by the Navier–Stokes equations coupled with the modified Cross model for the shear dependent viscosity. The fluid–solid interface is immersed in the design domain by the level set method and the fictitious porous material method. The sensitivity velocity derived by the level set based continuous adjoint method was utilized to control the evolution of the level set function. In order to accommodate the irregular analysis domains, the flow equations and the level set equations were computed on two different unstructured grids respectively. Three idealized arterial bypass configurations problems with the minimum flow shear stress objective were studied in the numerical examples. The results indicated that the optimal arterial bypass designs can effectively reduce integral of the squared shear rate in the artery and have a superior performance for the arterial grafting.

Vorheriger Artikel Cable stretching force optimization of concrete cable-stayed bridges including construction stages and time-dependent effects

Nächster Artikel 11th World congress on structural and multidisciplinary optimization (WCSMO-11)

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Titel: Topology optimization study of arterial bypass configurations using the level set method
verfasst von: Bin Zhang
Xiaomin Liu
Publikationsdatum: 01.03.2015
Verlag: Springer Berlin Heidelberg
Erschienen in: Structural and Multidisciplinary Optimization / Ausgabe 3/2015
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI: https://doi.org/10.1007/s00158-014-1175-y

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