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Analysis of a coupled fluid-structure model with applications to hemodynamics

Opened Access Analysis of a coupled fluid-structure model with applications to hemodynamics

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Autor: Chacón Rebollo, Tomás
Girault, Vivette
Murat, François
Pironneau, Olivier
Departamento: Universidad de Sevilla. Departamento de Ecuaciones Diferenciales y Análisis Numérico
Fecha: 2016
Publicado en: SIAM Journal on Numerical Analysis, 54 (2), 994-1019.
Tipo de documento: Artículo
Resumen: We propose and analyze a simplified fluid-structure coupled model for flows with compliant walls. As in [F. Nobile and C. Vergara, SIAM J. Sci. Comput., 30 (2008), pp. 731-763], the wall reaction to the fluid is modeled by a small displacement viscoelastic shell where the tangential stress components and displacements are neglected. We show that within this small displacement approximation a transpiration condition can be used which does not require an update of the geometry at each time step, for pipe flow at least. Such simplifications lead to a model which is well posed and for which a semi-implicit time discretization can be shown to converge. We present some numerical results and a comparison with a standard test case taken from hemodynamics. The model is more stable and less computer demanding than full models with moving mesh. We apply the model to a three-dimensional arterial flow with a stent.
Cita: Chacón Rebollo, T., Girault, V., Murat, F. y Pironneau, O. (2016). Analysis of a coupled fluid-structure model with applications to hemodynamics. SIAM Journal on Numerical Analysis, 54 (2), 994-1019.
Tamaño: 1.129Mb
Formato: PDF

URI: http://hdl.handle.net/11441/47879

DOI: 10.1137/140991509

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