An embedded surface method for valve simulation : application to stenotic aortic valve estimation
Contributo in Atti di convegno
Data di Pubblicazione:
2005
Citazione:
An embedded surface method for valve simulation : application to stenotic aortic valve estimation / P. Causin, N. Diniz dos Santos, J.F. Gerbeau, C. Guivier, P. Metier (ESAIM. PROCEEDINGS). - In: CEMRACS 2004 - Mathematics and applications to biology and medicine[s.l] : EDP sciences, 2005. - pp. 48-62 (( convegno CEMRACS : Mathematics and applications to biology and medicine tenutosi a Marseille nel 2004 [10.1051/proc:2005005].
Abstract:
This work deals with the modelling and the simulation of a moving
rigid valve in a blood flow. We consider a fluid-structure coupling
between an unsteady incompressible Navier-Stokes system for the fluid,
and an ODE for the structure with a rotation angle as only degree of
freedom. The kinematic constraint on the fluid-structure interface is
enforced via a Lagrange multiplier. A fictitious domain approach
allows us to use a fixed grid for the fluid domain, and also to
easily consider large valve displacements. We present numerical
results and we discuss clinical indexes used to characterize aortic
valve stenosis.
Tipologia IRIS:
03 - Contributo in volume
Keywords:
fluid-structure interaction; Navier-Stokes; fictitious domain; Lagrange multiplier; valve; stenosis; aorta
Elenco autori:
P. Causin, N. Diniz dos Santos, J.F. Gerbeau, C. Guivier, P. Metier
Link alla scheda completa:
Titolo del libro:
CEMRACS 2004 - Mathematics and applications to biology and medicine