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Author : Rui Cheng
Publisher :
ISBN 13 :
Total Pages : 190 pages
Book Rating : 4.:/5 (148 download)
Download or read book A Fluid-structure Interaction Simulation of Mechanical Heart Valve Flow Dynamics written by Rui Cheng and published by . This book was released on 2003 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Morteza Kimiaghalam
Publisher :
ISBN 13 :
Total Pages : 196 pages
Book Rating : 4.:/5 (884 download)
Download or read book Fluid-structure Interaction Simulation of Bileaflet and Monoleaflet Mechanical Heart Valve Flow Dynamics written by Morteza Kimiaghalam and published by . This book was released on 2013 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, opening and closing behavior of monoleaflet and bileaflet prosthetic heart valves was simulated using 2D and 3D Fluid Structure Interaction (FSI) models. The FSI models were based on the arbitrary Lagrangian-Eulerian (ALE) method for moving boundaries. Leaflet and diaphragm motions were described by means of user-defined functions following the experimental setup in a previous study. The hemodynamic performance of monoleaflet valves at the opening angle of 45, 60, 75, 80, and 85 was compared and results from this study demonstrated that the optimal opening angle should fall between 75 and 80. As the opening angle further increased, even though the calculated flow parameters continued to improve, the large angle could prevent the valve to close properly, which might lead to the failure of the heart valve. Furthermore, the hemodynamic performance of bileaflet and monoleaflet heart valves following the design of St. Jude bileaflet valve with 85 of opening angle and Bjork-Shiley monoleaflet valve with 75 of opening angle was compared. Results demonstrated that the flow in the monoleaflet valve design had a lower maximum velocity compared to the bileaflet design during both opening and closing phases which resulted in lower chance for flow to transition to turbulence. The mean pressure gradients across the monoleaflet and bileaflet valves were similar and resulted in an analogous EOA for these valves. According to the results of this study, the bileaflet valve had higher chance of developing cavitation bubbles during the valve closure because of higher pressure drops across the valve.
Author : Tayfun E. Tezduyar
Publisher : Springer Nature
ISBN 13 : 3031369424
Total Pages : 580 pages
Book Rating : 4.0/5 (313 download)
Download or read book Frontiers in Computational Fluid-Structure Interaction and Flow Simulation written by Tayfun E. Tezduyar and published by Springer Nature. This book was released on 2023-11-01 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational fluid-structure interaction (FSI) and flow simulation are challenging research areas that bring solution and analysis to many classes of problems in science, engineering, and technology. Young investigators under the age of 40 are conducting much of the frontier research in these areas, some of which is highlighted in this volume. The first author of each chapter took the lead role in carrying out the research presented. Some of the topics explored include Direct flow simulation of objects represented by point clouds Computational investigation of leaflet flutter in thinner biological heart valve tissues High-fidelity simulation of hydrokinetic energy applications High-resolution isogeometric analysis of car and tire aerodynamics Computational analysis of air-blast-structure interaction Heart valve computational flow analysis with boundary layer and leaflet contact representation Computational thermal multi-phase flow for metal additive manufacturing This volume will be a valuable resource for early-career researchers and students — not only those interested in computational FSI and flow simulation, but also other fields of engineering and science, including fluid mechanics, solid mechanics, and computational mathematics – as it will provide them with inspiration and guidance for conducting their own successful research. It will also be of interest to senior researchers looking to learn more about successful research led by those under 40 and possibly offer collaboration to these researchers.
Author : Yong Zhao
Publisher : Academic Press
ISBN 13 : 0128147717
Total Pages : 507 pages
Book Rating : 4.1/5 (281 download)
Download or read book Computational Fluid-Structure Interaction written by Yong Zhao and published by Academic Press. This book was released on 2018-09-25 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid-Structure Interaction: Methods, Models, and Applications provides detailed explanations of a range of FSI models, their mathematical formulations, validations, and applications, with an emphasis on conservative unstructured-grid FVM. The first part of the book presents the nascent numerical methods, algorithms and solvers for both compressible and incompressible flows, computational structural dynamics (CSD), parallel multigrid, IOM, IMM and ALE methods. The second half covers the validations of these numerical methods and solvers, as well as their applications in a broad range of areas in basic research and engineering. Provides a comprehensive overview of the latest numerical methods used in FSI, including the unstructured-grid finite volume method (FVM), parallel multigrid scheme, overlapping mesh, immersed object method (IOM), immersed membrane method (IMM), arbitrary Lagragian-Eulerian (ALE), and more Provides full details of the numerical methods, solvers and their validations Compares different methods to help readers more effectively choose the right approach for their own FSI problems Features real-life FSI case studies, such as large eddy simulation of aeroelastic flutter of a wing, parallel computation of a bio-prosthetic heart valve, and ALE study of a micro aerial vehicle
Author : Ardavan Aliabadi
Publisher :
ISBN 13 :
Total Pages : 81 pages
Book Rating : 4.:/5 (864 download)
Download or read book Numerical Simulation of Fluid-structure Interaction for Tilting-disk Mechanical Heart Valves written by Ardavan Aliabadi and published by . This book was released on 2013 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt: According to the United States Department of Health and Human Services, 27.1 million non-institutionalized adults were diagnosed with heart disease in 2010. The number of deaths associated with heart disease in 2009 was reported to be 599,413, claiming the lives of 195 out of every 100,000 people, which makes heart disease the number one killer in the U.S. Even though mechanical heart valves (MHVs) have proven to save lives in many of these cases, they are still not perfect, and complications arising from their design have reduced their application. To better understand the important factors and pursue remedies, numerous experimental investigations have been conducted; however, despite impressive improvements, small-scale studies suffer from lower levels of accuracy and sometimes are very costly to conduct. As in many other areas of research, numerical simulations can be helpful in reducing costs and supplementing such experimental work. The computational effort in this thesis focused on the numerical analysis of current tilting-disk MHVs. In this work, an implicit fluid-structure interaction (FSI) simulation of the Bjork-Shiley design was carried out using in-house codes implemented in the commercial code software FLUENT. In-house codes in the form of journal files, schemes, and user-defined functions (UDFs) were integrated to automate the inner iterations and enable communication between the fluid and the moving disk at the interfaces. Based on the investigation of the current simulations, a new design aiming at improving the hemodynamic performance is suggested. The hemodynamics of flow in current tilting-disk valves was compared with the suggested design, and it is concluded that the suggested design has a better hemodynamic performance in terms of shear stress values and residence times.
Author : Kyle Alexander Williston
Publisher :
ISBN 13 :
Total Pages : 154 pages
Book Rating : 4.:/5 (871 download)
Download or read book Numerical Modeling of Large-displacement Fluid-structure Interaction written by Kyle Alexander Williston and published by . This book was released on 2012 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: The demand for artificial heart valve replacements is increasing as a result of birth defects, ageing and disease. Collaboration between engineers, biologists and mathematicians is necessary to handle problems related to biocompatibility and fluid dynamics. As a result of the increased demand for artificial heart valves, many new designs have been developed recently. A method to test those designs is to use mathematical modeling. This method has a relatively low-cost and can be used as a preliminary tool before expensive prototypes are created. This research analyzes the use of the numerical modeling software LS-DYNA for large-displacement fluid-structure interaction. It is a preliminary study aimed at the analysis of heart valve dynamics. In particular, a channel with flap model is created in LS-DYNA. The model's physics, convergence and ability to handle large deformations is investigated.
Author : Arash Kheradvar
Publisher : Academic Press
ISBN 13 : 0128146621
Total Pages : 414 pages
Book Rating : 4.1/5 (281 download)
Download or read book Principles of Heart Valve Engineering written by Arash Kheradvar and published by Academic Press. This book was released on 2019-08-28 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt: Principles of Heart Valve Engineering is the first comprehensive resource for heart valve engineering that covers a wide range of topics, including biology, epidemiology, imaging and cardiovascular medicine. It focuses on valves, therapies, and how to develop safer and more durable artificial valves. The book is suitable for an interdisciplinary audience, with contributions from bioengineers and cardiologists that includes coverage of valvular and potential future developments. This book provides an opportunity for bioengineers to study all topics relating to heart valve engineering in a single book as written by subject matter experts. Covers the depth and breadth of this interdisciplinary area of research Encompasses a wide range of topics, from basic science, to the translational applications of heart valve engineering Contains contributions from leading experts in the field that are heavily illustrated
Author : P. Verdonck
Publisher : WIT Press (UK)
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.X/5 (4 download)
Download or read book Intra and Extracorporeal Cardiovascular Fluid Dynamics written by P. Verdonck and published by WIT Press (UK). This book was released on 1998 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text deals with intra and extra-corporeal cardiovascular fluid dynamics. Topics covered include: cardiac mechanical models; analysis of arterial haemodynamics using the principle of wave separation; microvascular networks; cardiac assist devices and others.
Author : Yuri Bazilevs
Publisher : John Wiley & Sons
ISBN 13 : 111848357X
Total Pages : 444 pages
Book Rating : 4.1/5 (184 download)
Download or read book Computational Fluid-Structure Interaction written by Yuri Bazilevs and published by John Wiley & Sons. This book was released on 2013-01-25 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid-Structure Interaction: Methods and Applications takes the reader from the fundamentals of computational fluid and solid mechanics to the state-of-the-art in computational FSI methods, special FSI techniques, and solution of real-world problems. Leading experts in the field present the material using a unique approach that combines advanced methods, special techniques, and challenging applications. This book begins with the differential equations governing the fluid and solid mechanics, coupling conditions at the fluid–solid interface, and the basics of the finite element method. It continues with the ALE and space–time FSI methods, spatial discretization and time integration strategies for the coupled FSI equations, solution techniques for the fully-discretized coupled equations, and advanced FSI and space–time methods. It ends with special FSI techniques targeting cardiovascular FSI, parachute FSI, and wind-turbine aerodynamics and FSI. Key features: First book to address the state-of-the-art in computational FSI Combines the fundamentals of computational fluid and solid mechanics, the state-of-the-art in FSI methods, and special FSI techniques targeting challenging classes of real-world problems Covers modern computational mechanics techniques, including stabilized, variational multiscale, and space–time methods, isogeometric analysis, and advanced FSI coupling methods Is in full color, with diagrams illustrating the fundamental concepts and advanced methods and with insightful visualization illustrating the complexities of the problems that can be solved with the FSI methods covered in the book. Authors are award winning, leading global experts in computational FSI, who are known for solving some of the most challenging FSI problems Computational Fluid-Structure Interaction: Methods and Applications is a comprehensive reference for researchers and practicing engineers who would like to advance their existing knowledge on these subjects. It is also an ideal text for graduate and senior-level undergraduate courses in computational fluid mechanics and computational FSI.
Author : Stefan Hartmann
Publisher : kassel university press GmbH
ISBN 13 : 3899586670
Total Pages : 278 pages
Book Rating : 4.8/5 (995 download)
Download or read book International Workshop on Fluid-Structure Interaction. Theory, Numerics and Applications written by Stefan Hartmann and published by kassel university press GmbH. This book was released on 2009 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hans-Joachim Bungartz
Publisher : Springer Science & Business Media
ISBN 13 : 3540345965
Total Pages : 401 pages
Book Rating : 4.5/5 (43 download)
Download or read book Fluid-Structure Interaction written by Hans-Joachim Bungartz and published by Springer Science & Business Media. This book was released on 2007-06-24 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume in the series Lecture Notes in Computational Science and Engineering presents a collection of papers presented at the International Workshop on FSI, held in October 2005 in Hohenwart and organized by DFG's Research Unit 493 "FSI: Modeling, Simulation, and Optimization". The papers address partitioned and monolithic coupling approaches, methodical issues and applications, and discuss FSI from the mathematical, informatics, and engineering points of view.
Author : Guohua Xia
Publisher :
ISBN 13 :
Total Pages : 284 pages
Book Rating : 4.:/5 (69 download)
Download or read book Three-dimensional Computation of Fluid-structure Interaction in Bioprosthetic Heart Valves Using Immersed Membrane Method written by Guohua Xia and published by . This book was released on 2005 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aims to apply computational fluid dynamics (CFD) and computational structural dynamics (CSD) to simulate the motions of bioprosthetic heart valves and the flow field around them.
Author : Tayfun E. Tezduyar
Publisher :
ISBN 13 : 9783319964706
Total Pages : 480 pages
Book Rating : 4.9/5 (647 download)
Download or read book Frontiers in Computational Fluid-Structure Interaction and Flow Simulation written by Tayfun E. Tezduyar and published by . This book was released on 2018 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational fluid-structure interaction and flow simulation are challenging research areas that bring solution and analysis to many classes of problems in science, engineering, and technology. Young investigators under the age of 40 are conducting much of the frontier research in these areas, some of which is highlighted in this book. The first author of each chapter took the lead role in carrying out the research presented. The topics covered include Computational aerodynamic and FSI analysis of wind turbines, Simulating free-surface FSI and fatigue-damage in wind-turbine structural systems, Aorta flow analysis and heart valve flow and structure analysis, Interaction of multiphase fluids and solid structures, Computational analysis of tire aerodynamics with actual geometry and road contact, and A general-purpose NURBS mesh generation method for complex geometries. This book will be a valuable resource for early-career researchers and students -- not only those interested in computational fluid-structure interaction and flow simulation, but also other fields of engineering and science, including fluid mechanics, solid mechanics, and computational mathematics - as it will provide them with inspiration and guidance for conducting their own successful research. It will also be of interest to senior researchers looking to learn more about successful research led by those under 40 and possibly offer collaboration to these researchers.
Author : Yuri Bazilevs
Publisher : Birkhäuser
ISBN 13 : 9783319408255
Total Pages : 500 pages
Book Rating : 4.4/5 (82 download)
Download or read book Advances in Computational Fluid-Structure Interaction and Flow Simulation written by Yuri Bazilevs and published by Birkhäuser. This book was released on 2016-10-14 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt: This contributed volume celebrates the work of Tayfun E. Tezduyar on the occasion of his 60th birthday. The articles it contains were born out of the Advances in Computational Fluid-Structure Interaction and Flow Simulation (AFSI 2014) conference, also dedicated to Prof. Tezduyar and held at Waseda University in Tokyo, Japan on March 19-21, 2014. The contributing authors represent a group of international experts in the field who discuss recent trends and new directions in computational fluid dynamics (CFD) and fluid-structure interaction (FSI). Organized into seven distinct parts arranged by thematic topics, the papers included cover basic methods and applications of CFD, flows with moving boundaries and interfaces, phase-field modeling, computer science and high-performance computing (HPC) aspects of flow simulation, mathematical methods, biomedical applications, and FSI. Researchers, practitioners, and advanced graduate students working on CFD, FSI, and related topics will find this collection to be a definitive and valuable resource.
Author : Aria Alimi
Publisher : kassel university press GmbH
ISBN 13 : 3737608156
Total Pages : 214 pages
Book Rating : 4.7/5 (376 download)
Download or read book Modeling and Numerical Simulation of Fluid-Structure Interaction in Circle of Willis written by Aria Alimi and published by kassel university press GmbH. This book was released on 2019-01-01 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main focus of this study is based on the numerical study of hemodynamics of blood and arterial wall behavior in Circle of Willis.
Author : Ahmad Moghaddaszade Kermani
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (858 download)
Download or read book Fluid-structure Interaction Studies on the Cardiovascular Hemodynamics of a Mitral Valve written by Ahmad Moghaddaszade Kermani and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The thesis presents a fluid-structure interaction studies on the hemodynamics of blood flow in the left ventricle and through the mitral valve. The virtual model consists of a mathematical model of the left ventricle coupled with a complex and structurally flexible bi-leaflet valve representing the mitral opening. The mitral valve is a bicuspid valve with anterior and posterior leaflets and it regulates unidirectional blood flow from the left atrium to the left ventricle in the diastole phase. The leaflets are made of chordae, annulus and papillary muscles. The goal of this study is to provide biomedical engineers and clinical physicians with a virtual laboratory tool to understand the dynamics of blood flow in a diseased heart and aid in the design of novel artificial heart valves. To this end, the simulation studies present an increasingly complex model of the heart to evaluate the vortex ring formation and evolution of the diastole phase in the left ventricle; and to characterize the septal-anterior motion in a diseased heart with obstructive hypertrophic cardiomyopathy. Finally, in collaboration with an industrial partner, the fluid-structure modeling framework was used to evaluate the performance of a new accelerated artificial valve tester.
Author : Michael S. Sacks
Publisher : Springer
ISBN 13 : 3030019934
Total Pages : 487 pages
Book Rating : 4.0/5 (3 download)
Download or read book Advances in Heart Valve Biomechanics written by Michael S. Sacks and published by Springer. This book was released on 2019-04-08 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the latest research development in heart valve biomechanics and bioengineering, with an emphasis on novel experimentation, computational simulation, and applications in heart valve bioengineering. The most current research accomplishments are covered in detail, including novel concepts in valvular viscoelasticity, fibril/molecular mechanisms of tissue behavior, fibril kinematics-based constitutive models, mechano-interaction of valvular interstitial and endothelial cells, biomechanical behavior of acellular valves and tissue engineered valves, novel bioreactor designs, biomechanics of transcatheter valves, and 3D heart valve printing. This is an ideal book for biomedical engineers, biomechanics, surgeons, clinicians, business managers in the biomedical industry, graduate and undergraduate students studying biomedical engineering, and medical students.
