MathLab seminar announcement

[Emanuele Tuillier Illingworth]

MATHLAB SEMINAR ANNOUNCEMENT


Speaker: Annalisa Quaini (Math Department, University of Houston, Texas, US)

Title: A Fluid-Structure Interaction Model to Simulate Mitral Valve 
Regurgitant Flow

Abstract: We discuss the numerical approximation of a fluid-structure 
interaction (FSI) problem involving an incompressible fluid (blood). 
This fluid surrounds an elastic wall containing a geometric orifice 
which mimics a leaky mitral valve. Our goal is to simulate hemodynamics 
conditions encountered in patients with mitral regurgitation in order to 
show strengths and limitations of echocardiographic methods to assess 
the severity of the pathology. To solve the coupled problem, we propose 
a semi-implicit monolithic approach which consists in preconditioning 
the linear system obtained after the space-time discretization and 
linearization of the FSI problem with a suitable diagonal scaling 
combined with an ILU preconditioner. Mitral regurgitant jets can be of 
two kinds: central (i.e. flowing in center of the atrium) and eccentric 
(i.e. flowing close to the atrial wall). The wall-hugging behavior of 
the latter kind has been associated with the Coanda effect. We will 
present numerical results for central jets and some preliminary work on 
jets undergoing the Coanda effect.

Venue: 23 May at 11:30 am in room 004

-- 
Dr. Emanuele Tuillier Illingworth
Secretary of the Mathematics Area
Building A, II floor, room 214
phone (+39) 040 37 87 598
fax (+39) 040 37 87 466
SISSA
Via Bonomea 265
34136
Trieste, ITALY
emanuele.tuillier at sissa.it