Analysis of blood flow into the main artery via mitral valve: Fluid structure interaction model

2010 ◽  
Author(s):  
Mohd Azrul Hisham Mohd Adib ◽  
Kahar Osman ◽  
Rudiyanto Philman Jong
Keyword(s):  
Blood Flow ◽  
Mitral Valve ◽  
Fluid Structure Interaction ◽  
Interaction Model ◽  
Fluid Structure ◽  
Main Artery ◽  
Structure Interaction

Image-based fluid–structure interaction model of the human mitral valve

2013 ◽  
Vol 71 ◽  
pp. 417-425 ◽  
Author(s):  
Xingshuang Ma ◽  
Hao Gao ◽  
Boyce E. Griffith ◽  
Colin Berry ◽  
Xiaoyu Luo
Keyword(s):  
Mitral Valve ◽  
Fluid Structure Interaction ◽  
Interaction Model ◽  
Fluid Structure ◽  
Structure Interaction

Effect of Stenosis Asymmetry on Blood Flow and Artery Compression: A Three-Dimensional Fluid-Structure Interaction Model

2003 ◽  
Vol 31 (10) ◽  
pp. 1182-1193 ◽  
Author(s):  
Dalin Tang ◽  
Chun Yang ◽  
Shunichi Kobayashi ◽  
Jie Zheng ◽  
Raymond P. Vito
Keyword(s):  
Blood Flow ◽  
Fluid Structure Interaction ◽  
Three Dimensional ◽  
Interaction Model ◽  
Fluid Structure ◽  
Structure Interaction

Investigation of the Blood Flow and Mitral-Septal Opposition in the Left Ventricle With the Obstructive Hyperthrophic Cardiomyopathy During Systole Using Fluid-Structure Interaction Technique

2010 ◽  
Author(s):  
Ahmad Moghaddaszade Kermani ◽  
Afzal Suleman
Keyword(s):  
Blood Flow ◽  
Mitral Valve ◽  
Left Ventricle ◽  
Fluid Structure Interaction ◽  
Left Ventricular ◽  
Anterior Leaflet ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Narrow Passage ◽  
Aortic Orifice

In this article, fluid-structure interaction methodology was used to analyze the blood flow and Mitral-Septal opposition in the Left ventricle with the Obstructive Hyperthrophic Cardiomyopathy (OHCM). The geometry of the computational model includes the diseased left ventricle with thickened septum and Mitral valve. A semi-ellipsoidal geometry was developed with the dimensions, extracted from MR images of the diseased left ventricle. Also, the geometry of the Mitral valve was created using anatomical data provided in literature [1]. The three element Windkessel model and atrial pressure [2, 3] were used to introduce mass flow and pressure boundary conditions to the aortic orifice and left atrium respectively. Effect of the fibers was taken into account by varying the Young’s modulus of the mitral valve tissue with circumferential and radial coordinates. The fluid-structure interaction algorithm started at the beginning of the systole (when the mitral valve is fully open with zero stress) by applying the left ventricular pressure on the left ventricular wall and aortic mass flow outlet on the aortic orifice. The Navier-Stokes equations were solved with SIMPLE algorithm and finite volume method to calculate the blood flow inside the diseased left ventricle. The calculated pressure was applied to the surface of the mitral valve and the structural model of the tissue was solved using non-linear finite element. The deformation of the mitral valve was transferred to the blood by moving the fluid mesh. In the next time step, the same procedure was repeated with the new mesh. This algorithm was followed up to the end of the systole. The thickened septum creates a narrow passage for the blood flowing out of the left ventricle, thus a jet of blood flow is developed in this narrow passage which applies high shear stress on the anterior leaflet of the mitral valve. The drag force deforms the anterior leaflet toward the septum, obstructing the blood flow rushing toward the aortic orifice.

scholarly journals Numerical simulations of a 3D fluid-structure interaction model for blood flow in an atherosclerotic artery

2017 ◽  
Vol 14 (1) ◽  
pp. 179-193 ◽  
Author(s):  
Oualid Kafi ◽  
◽  
Nader El Khatib ◽  
Jorge Tiago ◽  
Adélia Sequeira ◽  
...  
Keyword(s):  
Blood Flow ◽  
Numerical Simulations ◽  
Fluid Structure Interaction ◽  
Interaction Model ◽  
Fluid Structure ◽  
Structure Interaction

Degenerative vs Rigidity on Mitral Valve Leaflet Using Fluid Structure Interaction (FSI) Model

2016 ◽  
Vol 26 ◽  
pp. 60-65 ◽  
Author(s):  
Mohd Azrul Hisham Mohd Adib ◽  
Nur Hazreen Mohd Hasni
Keyword(s):  
Mitral Valve ◽  
Heart Valve ◽  
Fluid Structure Interaction ◽  
Interaction Model ◽  
Valve Leaflet ◽  
Mitral Valve Leaflet ◽  
Fluid Structure ◽  
Structure Interaction ◽  
Simulation Techniques ◽  
Condition Modeling

The objectives of this study are to observe the deformation of mitral leaflet in systole condition and compare the rigidity of heart valve leaflet during systole and diastole conditions. Two-dimensional model of the mitral valve leaflet with ventricle were created using fluid structure interaction model in computational simulations. The result shows rigidity of heart valve leaflet always opposite to degeneration and the simulated displacement models corresponded to normal deformation in physical heart valve in systole condition. Modeling simulation techniques are very useful in the study of degenerative heart valve and the findings would allow us to optimize feature and geometries to reduced deformation of heart valve failure.

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