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Computational Mechanics

Erschienen in:

01.10.2014 | Original Paper

Space–time interface-tracking with topology change (ST-TC)

verfasst von: Kenji Takizawa, Tayfun E. Tezduyar, Austin Buscher, Shohei Asada

Erschienen in: Computational Mechanics | Ausgabe 4/2014

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Abstract

To address the computational challenges associated with contact between moving interfaces, such as those in cardiovascular fluid–structure interaction (FSI), parachute FSI, and flapping-wing aerodynamics, we introduce a space–time (ST) interface-tracking method that can deal with topology change (TC). In cardiovascular FSI, our primary target is heart valves. The method is a new version of the deforming-spatial-domain/stabilized space–time (DSD/SST) method, and we call it ST-TC. It includes a master–slave system that maintains the connectivity of the “parent” mesh when there is contact between the moving interfaces. It is an efficient, practical alternative to using unstructured ST meshes, but without giving up on the accurate representation of the interface or consistent representation of the interface motion. We explain the method with conceptual examples and present 2D test computations with models representative of the classes of problems we are targeting.

Vorheriger Artikel Patient-specific analysis of post-operative aortic hemodynamics: a focus on thoracic endovascular repair (TEVAR)

Nächster Artikel Space–time fluid mechanics computation of heart valve models

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Titel: Space–time interface-tracking with topology change (ST-TC)
verfasst von: Kenji Takizawa
Tayfun E. Tezduyar
Austin Buscher
Shohei Asada
Publikationsdatum: 01.10.2014
Verlag: Springer Berlin Heidelberg
Erschienen in: Computational Mechanics / Ausgabe 4/2014
Print ISSN: 0178-7675
Elektronische ISSN: 1432-0924
DOI: https://doi.org/10.1007/s00466-013-0935-7

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