Memorias de investigación
Artículos en revistas:
Fluid-solid interaction in arteries incorporating the autoregulation concept in boundary conditions
Año:2015
Áreas de investigación
  • Ingeniería mecánica, aeronaútica y naval
Datos
Descripción
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.
Internacional
Si
JCR del ISI
Si
Título de la revista
Computer Methods in Biomechanics And Biomedical Engineering
ISSN
1025-5842
Factor de impacto JCR
1,793
Información de impacto
Datos JCR del año 2013
Volumen
DOI
10.1080/10255842.2015.1085026
Número de revista
Desde la página
1
Hasta la página
17
Mes
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Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Grupo de Mecánica Computacional
  • Departamento: Mecánica de Medios Continuos y Teoría de Estructuras