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RISSecondary Flow Velocity Patterns in a Pulmonary Artery Model With Varying Degrees of Valvular Pulmonic Stenosis: Pulsatile In Vitro Studies
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The objective of this study was to characterize in detail the secondary flow velocity patterns in an in vitro model of a human (adult) pulmonary artery with varying degrees of valvular pulmonic ...
Computational Modeling of Left Heart Diastolic Function: Examination of Ventricular Dysfunction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational model that accounts for blood–tissue interaction under physiological flow conditions was developed and applied to a thin-walled model of the left heart. This model consisted of ...
Three-Dimensional Computational Model of Left Heart Diastolic Function With Fluid–Structure Interaction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Aided by advancements in computer speed and modeling techniques, computational modeling of cardiac function has continued to develop over the past twenty years. The goal of the current study ...
Influence of Abdominal Aortic Curvature and Resting Versus Exercise Conditions on Velocity Fields in the Normal Abdominal Aortic Bifurcation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Local hemodynamics are considered an important atherogenetic factor in the abdominal aortic bifurcation. This study addresses the quantitative flow fields in a pulsatile flow model of a normal ...
Flow in a Mechanical Bileaflet Heart Valve at Laminar and Near-Peak Systole Flow Rates: CFD Simulations and Experiments
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Time-accurate, fully 3D numerical simulations and particle image velocity laboratory experiments are carried out for flow through a fully open bileaflet mechanical heart valve under steady ...
Design of a Sterile Organ Culture System for the Ex Vivo Study of Aortic Heart Valves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The biological response of valves to mechanical forces is not well understood. The aim of this study was to design a pulsatile system to enable the ex vivo study of aortic valves when ...
Noninvasive Fluid Dynamic Power Loss Assessments for Total Cavopulmonary Connections Using the Viscous Dissipation Function: A Feasibility Study
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The total cavopulmonary connection (TCPC) has shown great promise as an effective palliation for single-ventricle congenital heart defects. However, because the procedure results in complete bypass ...
Dynamic Hemodynamic Energy Loss in Normal and Stenosed Aortic Valves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Aortic valve (AV) stenosis, if untreated, leads to heart failure. From a mechanics standpoint, heart failure can be interpreted as the failure of the heart to generate sufficient power to ...
Experimental Technique of Measuring Dynamic Fluid Shear Stress on the Aortic Surface of the Aortic Valve Leaflet
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Aortic valve (AV) calcification is a highly prevalent disease with serious impact on mortality and morbidity. The exact cause and mechanism of the progression of AV calcification is unknown, ...
The Effects of Different Mesh Generation Methods on Computational Fluid Dynamic Analysis and Power Loss Assessment in Total Cavopulmonary Connection
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The flow field and energetic efficiency of total cavopulmonary connection (TCPC) models have been studied by both in vitro experiment and computational fluid dynamics (CFD). All the previous CFD ...