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Bioengineering: One-Way Fluid-Structure Interaction in a Blood Vessel Network. Contents. Introduction Problem Definition Analysis of the fluid flow Structural analysis. Results. Introduction.
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Bioengineering: One-Way Fluid-Structure Interaction in a Blood Vessel Network
Contents • Introduction • Problem Definition • Analysis of the fluid flow • Structural analysis. • Results
Introduction • The aim of the study is to estimate the displacements and stresses of the walls of part of a child’s aorta, and some ramifications embedded in the heart muscle, when subjected to the pressure caused by the heart’s beating. • The model can be used to examine the risk for failure of the aorta given a certain deformation in the aorta.
Problem Definition • One-way fluid-structure interaction: • The blood flow and fluid pressure is computed in a first step. • The forces exerted by the fluid on the inner walls of the aorta are used as loads for the structural analysis in the walls and surrounding cardiac muscle tissue. • The equations for the fluid flow are defined inside the blood vessel. • The structural analysis is defined in the walls and the tissue only. • Highly non-linear hyper-elastic model for the blood vessel walls and the surrounding tissue.
Problem Definition Aorta Cardiac muscle Pressure conditions on all inlets and outlets Constraints on motionon outer walls
Results - Fluid Flow Pressure Velocity
Results - Structural Analysis Displacements at peak load