Memorias de investigación
Research Publications in journals:
Fluid-solid interaction in arteries incorporating the autoregulation concept in boundary conditions
Year:2015
Research Areas
  • Mechanical aeronautics and naval engineering
Information
Abstract
In pre-surgery decisions in hospital emergency cases, fast and reliable results of the solid and fluid mechanics problems are of great interest to clinicians. In the current investigation, an iterative process based on a pressure-type boundary condition is proposed in order to reduce the computational costs of blood flow simulations in arteries, without losing control of the important clinical parameters. The incorporation of cardiovascular autoregulation, together with the well-known impedance boundary condition, forms the basis of the proposed methodology. With autoregulation, the instabilities associated with conventional pressure-type or impedance boundary conditions are avoided without an excessive increase in computational costs. The general behaviour of pulsatile blood flow in arteries, which is important from the clinical point of view, is well reproduced through this new methodology. In addition, the interaction between the blood and the arterial walls occurs via a modified weak coupling, which makes the simulation more stable and computationally efficient. Based on in vitro experiments, the hyperelastic behaviour of the wall is characterised and modelled. The applications and benefits of the proposed pressure-type boundary condition are shown in a model of an idealised aortic arch with and without an ascending aorta dissection, which is a common cardiovascular disorder.
International
Si
JCR
Si
Title
Computer Methods in Biomechanics And Biomedical Engineering
ISBN
1025-5842
Impact factor JCR
1,793
Impact info
Datos JCR del año 2013
Volume
10.1080/10255842.2015.1085026
Journal number
From page
1
To page
17
Month
SEPTIEMBRE
Ranking
Participants
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Grupo de Mecánica Computacional
  • Departamento: Mecánica de Medios Continuos y Teoría de Estructuras