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Fluid Flow inside Deformable Vessels and in the Left Ventricle

  • Gianni Pedrizzetti
  • Federico Domenichini
Part of the International Centre for Mechanical Sciences book series (CISM, volume 446)

Abstract

Topics regarding flow inside deformable domains are here considered either for artery and ventricle flows. The theory of finite elasticity is summarised in a perspective of application to fluid-tissue interaction problems. The formulation of a coupled fluid tissue problem is discussed. A linearized technique is then introduced as a model for wall elasticity in artery flow. This simplification transforms the coupled fluid-wall system into a cascade of uncoupled systems on a fixed domain. Computational examples are given in axisymmetric problems, for both finite and infinitesimal deformation cases, to show resonance and stability features of the interactive dynamics. The heart dynamics and the major ventricular diseases are briefly summarised in a mechanical perspective. The formulation of the flow in a model left ventricle is given, and numerical solutions for flow during the left ventricle filling (diastole) is studied and analysed in terms of vorticity dynamics Results are also presented in relation to the physical phenomena observed in the clinical practice. In connection with this the mitral valve modelling is also introduced.

Keywords

Mitral Valve Wall Shear Stress Vortex Wake Elastic Wall Wall Deformation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Wien 2003

Authors and Affiliations

  • Gianni Pedrizzetti
    • 1
  • Federico Domenichini
    • 2
  1. 1.Dipartimento di Ingegneria CivileUniversità di TriesteItaly
  2. 2.Dipartimento di Ingegneria CivileUniversità di FirenzeItaly

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