scholarly journals Wave propagation in stenotic vessels; theoretical analysis and comparison between 3D and 1D fluid–structure-interaction models

2019 ◽  
Vol 88 ◽  
pp. 352-366 ◽  
Author(s):  
G. Papadakis ◽  
J. Raspaud
Keyword(s):  
Wave Propagation ◽  
Theoretical Analysis ◽  
Fluid Structure Interaction ◽  
Fluid Structure ◽  
Interaction Models ◽  
Structure Interaction

Mechanical stresses in carotid plaques using MRI-based fluid–structure interaction models

2008 ◽  
Vol 41 (8) ◽  
pp. 1651-1658 ◽  
Author(s):  
Samuel A. Kock ◽  
Jens V. Nygaard ◽  
Nikolaj Eldrup ◽  
Ernst-Torben Fründ ◽  
Anette Klærke ◽  
...  
Keyword(s):  
Fluid Structure Interaction ◽  
Mechanical Stresses ◽  
Fluid Structure ◽  
Interaction Models ◽  
Carotid Plaques ◽  
Structure Interaction

WALL SHEAR STRESSES IN A FLUID–STRUCTURE INTERACTION MODEL OF PULSE WAVE PROPAGATION

2014 ◽  
Vol 14 (02) ◽  
pp. 1450019 ◽  
Author(s):  
FAN HE
Keyword(s):  
Wave Propagation ◽  
Pulse Wave ◽  
Fluid Structure Interaction ◽  
Interaction Model ◽  
Elastic Tube ◽  
Tube Model ◽  
Pulse Wave Propagation ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Internal Radius

In our prior paper, a fluid–structure interaction model of pulse wave propagation, called the elastic tube model, has been developed. The focus of this paper is wall shear stress (WSS) in this model and the effects of different parameters, including rigid walls, wall thickness, and internal radius. The unsteady flow was assumed to be laminar, Newtonian and incompressible, and the vessel wall to be linear-elastic isotropic, and incompressible. A fluid–structure interaction scheme is constructed using a finite element method. The results demonstrate the elastic tube plays an important role in WSS distributions of wave propagation. It is shown that there is a time delay between the WSS waveforms at different locations in the elastic tube model while the time delay cannot be observed clearly in the rigid tube model. Compared with the elastic tube model, the increase of the wall thickness makes disturbed WSS distributions, however WSS values are increased greatly due to the decrease of the internal radius. The results indicate that the effects of different parameters on WSS distributions are significant. The proposed model gives valid results.

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