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Dissertations / Theses on the topic 'Fluid element interactions'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Wang, Xiaodong. "On mixed finite element formulations for fluid-structure interactions." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/38061.

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2

O'Connor, Joseph. "Fluid-structure interactions of wall-mounted flexible slender structures." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/fluidstructure-interactions-of-wallmounted-flexible-slender-structures(1dab2986-b78f-4ff9-9b2e-5d2181cfa009).html.

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The fluid-structure interactions of wall-mounted slender structures, such as cilia, filaments, flaps, and flags, play an important role in a broad range of physical processes: from the coherent waving motion of vegetation, to the passive flow control capability of hair-like surface coatings. While these systems are ubiquitous, their coupled nonlinear response exhibits a wide variety of behaviours that is yet to be fully understood, especially when multiple structures are considered. The purpose of this work is to investigate, via numerical simulation, the fluid-structure interactions of arrays

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3

Shin, James Jang-Sik. "A spectral element formulation for fluid-structure interactions : applications to flow through collapsible channels." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41003.

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4

Belakroum, Rassim. "Contribution à la modélisation des interactions fluides-structures." Thesis, Reims, 2011. http://www.theses.fr/2011REIMS009/document.

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Les buts principaux recherchés de la présente thèse visent au développement et à l’expertise d’une méthodologie de simulation numérique des problèmes d’interactions fluides-structures. Afin de cerner progressivement le problème étudié, nous nous sommes intéressés en premier lieu à la simulation numérique des écoulements autour d’obstacles solides, plus particulièrement au phénomène d’éclatements tourbillonnaires dans la zone de sillage d’obstacles de différentes formes. Nous avons utilisé la méthode des éléments finis en adoptant la technique de stabilisation GLS (Galerkin Least-Square). Pour

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5

Link, Gerhard. "A finite element scheme for fluid-solid-acoustics interactions and its application to human phonation." Bamberg Meisenbach, 2008. http://d-nb.info/99357047X/04.

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6

Frei, Stefan [Verfasser], and Thomas [Akademischer Betreuer] Richter. "Eulerian finite element methods for interface problems and fluid-structure interactions / Stefan Frei ; Betreuer: Thomas Richter." Heidelberg : Universitätsbibliothek Heidelberg, 2016. http://d-nb.info/1180616197/34.

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7

Hussein, Ahmed Abd Elmonem Ahmed. "Dynamical System Representation and Analysis of Unsteady Flow and Fluid-Structure Interactions." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/85626.

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A dynamical system approach is utilized to reduce the representation order of unsteady fluid flows and fluid-structure interaction systems. This approach allows for significant reduction in the computational cost of their numerical simulations, implementation of optimization and control methodologies and assessment of their dynamic stability. In the first chapter, I present a new Lagrangian function to derive the equations of motion of unsteady point vortices. This representation is a reconciliation between Newtonian and Lagrangian mechanics yielding a new approach to model the dynamics of the

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8

Peña, Monferrer Carlos. "Computational fluid dynamics multiscale modelling of bubbly flow. A critical study and new developments on volume of fluid, discrete element and two-fluid methods." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/90493.

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The study and modelling of two-phase flow, even the simplest ones such as the bubbly flow, remains a challenge that requires exploring the physical phenomena from different spatial and temporal resolution levels. CFD (Computational Fluid Dynamics) is a widespread and promising tool for modelling, but nowadays, there is no single approach or method to predict the dynamics of these systems at the different resolution levels providing enough precision of the results. The inherent difficulties of the events occurring in this flow, mainly those related with the interface between phases, makes that

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9

Borchert, Manuela. "Interactions between aqueous fluids and silicate melts : equilibration, partitioning and complexation of trace elements." Phd thesis, Universität Potsdam, 2010. http://opus.kobv.de/ubp/volltexte/2010/4208/.

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The origin and evolution of granites has been widely studied because granitoid rocks constitute a major portion of the Earth ́s crust. The formation of granitic magma is, besides temperature mainly triggered by the water content of these rocks. The presence of water in magmas plays an important role due to the ability of aqueous fluids to change the chemical composition of the magma. The exsolution of aqueous fluids from melts is closely linked to a fractionation of elements between the two phases. Then, aqueous fluids migrate to shallower parts of the Earth ́s crust because of it ́s lower den

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10

Sheer, Francis Joseph. "Multi-Scale Computational Modeling of Fluid-Structure Interactions and Adhesion Dynamics in the Upper Respiratory System." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1316287639.

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11

Desai, Prathamesh. "Tribosurface Interactions involving Particulate Media with DEM-calibrated Properties: Experiments and Modeling." Research Showcase @ CMU, 2017. http://repository.cmu.edu/dissertations/1123.

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While tribology involves the study of friction, wear, and lubrication of interacting surfaces, the tribosurfaces are the pair of surfaces in sliding contact with a fluid (or particulate) media between them. The ubiquitous nature of tribology is evident from the usage of its principles in all aspects of life, such as the friction promoting behavior of shoes on slippery water-lubricated walkways and tires on roadways to the wear of fingernails during filing or engine walls during operations. These tribosurface interfaces, due to the small length scales, are difficult to model for contact mechani

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12

McCallum, Peter Duncan. "Numerical methods for modelling the viscous effects on the interactions between multiple wave energy converters." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28906.

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The vast and rich body of literature covering the numerical modelling of hydrodynamic floating body systems has demonstrated their great power and versatility when applied to offshore marine energy systems. It is possible to model almost any type of physical phenomenon which could be expected within such a system, however, limitations of computing power continue to restrict the usage of the most comprehensive models to very narrow and focused design applications. Despite the continued evolution of parallel computing, one major issue that users of computational tools invariably face is how to s

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13

Dombre, Emmanuel. "Modélisation non-linéaire des interactions vague-structure appliquée à des flotteurs d'éoliennes off-shore." Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1050/document.

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Cette thèse est consacrée à l'étude numérique des interactions non-linéaires entre des vagues et un corps rigide perçant la surface libre. La méthode développée repose sur un modèle d'éléments de frontière qui réduit la dimensionnalité du problème d'une dimension. Dans un premier temps, un modèle2D est appliqué à des géométries simples et permet de démontrer la pertinence de l'approche envisagée pour la prédiction des mouvements d'une structure flottante soumise à des vagues monochromatiques régulières. Dans un second temps, en nous inspirant d'un modèle potentiel non-linéaire 3D développé par

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14

Nitikitpaiboon, Chanwut. "Finite element formulations for fluid-structure interaction." Thesis, Massachusetts Institute of Technology, 1993. http://hdl.handle.net/1721.1/37500.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.<br>Includes bibliographical references (leaves 123-128).<br>by Chanwut Nitikitpaiboon.<br>Ph.D.

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15

Hamdan, Fadi. "Finite element solutions for transient fluid-structure interaction." Thesis, Imperial College London, 1993. http://hdl.handle.net/10044/1/8119.

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The objective of this thesis is to develop numerical tools capable of modelling the nonlinear behaviour of bounded and unbounded transient fluid-structure interaction systems. Towards this end, a numerical approach based on the finite element method was developed and implemented into a general purpose computer program ASAS-NL. Four main developments are reported: (i) The Mixed-Eulerian-Lagrangian description of the continuum has been developed to account for the nonlinear effects of fluid-structure interaction systems and a mesh rezoning scheme derived to be used with it. In addition a predict

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16

Franco, Flavio Jose Borges Fortes. "Finite element analysis of fluid-structure interaction in turbomachines." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/7913.

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17

Taylor, Richard. "Finite element modelling of three dimensional fluid-structure interaction." Thesis, Swansea University, 2013. https://cronfa.swan.ac.uk/Record/cronfa42308.

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This work is focused on the numerical modelling of fluid-structure interaction in three dimensions. Both internal and external laminar flow around flexible bodies are considered. The fluid flow simulated is based on the incompressible Navier-Stokes equations and the general focus is on laminar Newtonian flow. The streamline upwind/ pressure stabilising Petrov-Galerkin (SUPG/PSPG) method is employed to achieve a stable low order finite element discretisation of the fluid, while the solid is discretised spatially by a standard Galerkin finite element approach. The behavior of the solid is govern

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18

Domínguez, García Catalina [Verfasser]. "Finite element and boundary element coupling for fluid-structure interaction / Catalina Domínguez García." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover, 2010. http://d-nb.info/100841008X/34.

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19

Zhang, Shaojie. "Numerical simulation of mechanical interactions between liquid and solid phase in solidification processes." Thesis, Université Paris sciences et lettres, 2020. https://pastel.archives-ouvertes.fr/tel-02897918.

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La maîtrise des phénomènes de macroségrégation et des défauts liés à la déformation est le principal enjeu des processus de solidification. La modélisation numérique apporte une réponse aux besoins industriels pour maîtriser ces défauts. L'un des problèmes les plus critiques et essentiels est le calcul simultané de l'écoulement du fluide dans les régions liquides et de l'évolution contrainte-déformation dans les régions déjà solidifiées. Dans ce but spécifique, un algorithme de solution partitionnée est développé pour modéliser à la fois les processus de coulée en lingots et de coulée continue

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20

Saigre, Thomas. "Modélisation mathématique, simulation et réduction d’ordre de flux oculaires et leurs interactions : construire le jumeau numérique de l'oeil." Electronic Thesis or Diss., Strasbourg, 2024. http://www.theses.fr/2024STRAD052.

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Le corps humain est un système complexe, et l'œil humain n’y fait pas exception. Malgré les avancées médicales, de nombreuses questions pathologiques subsistent. Les modèles mathématiques et computationnels complètent les études cliniques en dévoilant des mécanismes physiopathologiques complexes.L'œil, accessible de manière non invasive, offre des marqueurs biologiques utiles pour diagnostiquer des maladies. Comprendre son comportement, ses pathologies et les traitements associés est donc essentiel.Cette thèse explore la modélisation et la simulation des flux oculaires, notamment le transfert

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21

Tan, Ming-yi. "A viscous boundary element approach to fluid flow-structure interaction problems." Thesis, University of Southampton, 1994. https://eprints.soton.ac.uk/253307/.

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22

De, Rosis Alessandro <1984&gt. "Fluid-structure interaction by a coupled lattice Boltzmann-finite element approach." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5934/1/derosis_alessandro_tesi.pdf.

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In this thesis, a strategy to model the behavior of fluids and their interaction with deformable bodies is proposed. The fluid domain is modeled by using the lattice Boltzmann method, thus analyzing the fluid dynamics by a mesoscopic point of view. It has been proved that the solution provided by this method is equivalent to solve the Navier-Stokes equations for an incompressible flow with a second-order accuracy. Slender elastic structures idealized through beam finite elements are used. Large displacements are accounted for by using the corotational formulation. Structural dynamics is comput

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23

De, Rosis Alessandro <1984&gt. "Fluid-structure interaction by a coupled lattice Boltzmann-finite element approach." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5934/.

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In this thesis, a strategy to model the behavior of fluids and their interaction with deformable bodies is proposed. The fluid domain is modeled by using the lattice Boltzmann method, thus analyzing the fluid dynamics by a mesoscopic point of view. It has been proved that the solution provided by this method is equivalent to solve the Navier-Stokes equations for an incompressible flow with a second-order accuracy. Slender elastic structures idealized through beam finite elements are used. Large displacements are accounted for by using the corotational formulation. Structural dynamics is comput

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24

Förster, Christiane. "Robust methods for fluid-structure interaction with stabilised finite elements." [S.l. : s.n.], 2007. http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-32988.

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25

Zhang, Hao. "Numerical investigation of particle-fluid interaction system based on discrete element method." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/284833.

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This thesis focuses on the numerical investigation of the particle-fluid systems based on the Discrete Element Method (DEM). The whole thesis consists of three parts, in each part we have coupled the DEM with different schemes/solvers on the fluid phase. In the first part, we have coupled DEM with Direct Numerical Simulation (DNS) to study the particle-laden turbulent flow. The effect of collisions on the particle behavior in fully developed turbulent flow in a straight square duct was numerically investigated. Three sizes of particles were considered with diameters equal to 50 µm, 100 µm and

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26

Baumgart, Johannes. "The Hair Bundle: Fluid-Structure Interaction in the Inner Ear." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-63810.

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A multitude of processes cooperate to produce the sensation of sound. The key initial step, the transformation from mechanical motion into an electrical signal, takes place in highly specialized mechanosensitive organelles that are called hair bundles due to their characteristic appearance. Each hair bundle comprises many apposed cylindrical stereocilia that are located in a liquid-filled compartment of the inner ear. The viscous liquid surrounding the hair bundle dissipates energy and dampens oscillations, which poses a fundamental physical challenge to the high sensitivity and sharp frequenc

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27

Nagai, Toshiki. "Space-time Extended Finite Element Method with Applications to Fluid-structure Interaction Problems." Thesis, University of Colorado at Boulder, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10844711.

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<p> This thesis presents a space-time extended finite element method (space-time XFEM) based on the Heaviside enrichment for transient problems with moving interfaces, and its applications to the fluid-structure interaction (FSI) analysis. The Heaviside-enriched XFEM is a promising method to discretize partial differential equations with discontinuities in space. However, significant approximation errors are introduced by time stepping schemes when the interface geometry changes in time. The proposed space-time XFEM applies the finite element discretization and the Heaviside enrichment in both

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28

Monasse, Laurent. "Analysis of a discrete element method and coupling with a compressible fluid flow method." Phd thesis, Université Paris-Est, 2011. http://pastel.archives-ouvertes.fr/pastel-00672342.

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This work aims at the numerical simulation of compressible fluid/deformable structure interactions. In particular, we have developed a partitioned coupling algorithm between a Finite Volume method for the compressible fluid and a Discrete Element method capable of taking into account fractures in the solid. A survey of existing fictitious domain methods and partitioned algorithms has led to choose an Embedded Boundary method and an explicit coupling scheme. We first showed that the Discrete Element method used for the solid yielded the correct macroscopic behaviour and that the symplectic time

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29

Gomes, Henrique Campelo. "Método dos elementos finitos com fronteiras imersas aplicado a problemas de dinâmica dos fluidos e interação fluido-estrutura." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3144/tde-26122013-150059/.

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Este trabalho pode ser dividido em três etapas principais. Inicialmente é proposta uma formulação estabilizada do método dos elementos finitos (MEF) para solução de problemas de escoamento incompressível governado pela equação de Navier-Stokes. Esta formulação foi implementada em um código computacional e testada através de diversos exemplos numéricos. Alguns elementos finitos com diferentes pares de função de interpolação da velocidade e pressão, consagrados na literatura, e também elementos finitos menos populares, foram investigados e seus resultados e performance comparados. A segunda etap

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30

Satterwhite, Matthew Ryan. "Development and Validation of Fluid-Structure Interaction in Aircraft Crashworthiness Studies." Thesis, Virginia Tech, 2013. http://hdl.handle.net/10919/51559.

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Current Federal Aviation Regulations require costly and time consuming crashworthiness testing to certify aircraft. These tests are only capable of a limited assessment of progressive damage and all crash configurations and scenarios cannot be physically evaluated. Advancements in technology have led to accurate and effective developments in numerical modeling that have the possibility of replacing these rigorous physical experiments. Through finite element analysis, an in-depth investigation of an aircraft equipped with a fabricated composite undercarriage was evaluated during water ditching.

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31

Sanches, Rodolfo André Kuche. "Análise bidimensional de interação fluido-estrutura: desenvolvimento de código computacional." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-06112006-145215/.

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O presente trabalho consiste no desenvolvimento de um código computacional baseado no método dos elementos finitos (MEF), para análise bidimensional de interação fluido-estrutura. Desenvolve-se um código bidimensional para dinâmica de fluidos compressíveis, viscosos ou não, em formulação Euleriana, com base no algoritmo CBS characteristic based split. Então o código desenvolvido é adaptado para poder ser acoplado a um programa de formulação Lagrangeana para análise dinâmica de estruturas, o que é feito através do emprego da descrição Lagrangeana - Euleriana arbitrária (ALE). Por fim procede-

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32

Day, Jennifer L. "Finite-element modelling of the fluid-structure interaction between the ear canal and eardrum." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=60036.

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In this work mathematical modelling methods are formulated in order to examine how sound pressures in the ear canal interact with displacements on the eardrum. Existing finite-element code is altered and new code developed to deal with the acoustics of the ear canal and the mathematics of the fluid-structure interaction problem. A finite-element model of the human ear canal and eardrum using simplified geometry is developed as an initial approach to the coupled problem. The preliminary finite-element model consists of a cylindrical tube attached to a circular plate, with appropriate material p

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33

Han, Dong. "On Eulerian-Lagrangian-Lagrangian Method for Solving Fluid-Structure Interaction Problem." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1595845627308018.

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34

Cicigliano, Emerson Carlos dos Santos [UNESP]. "Análise numérica do escoamento de fluido em tubos elásticos." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/94514.

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Made available in DSpace on 2014-06-11T19:27:13Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-02-26Bitstream added on 2014-06-13T19:14:28Z : No. of bitstreams: 1 cicigliano_ecs_me_ilha.pdf: 2408732 bytes, checksum: 0af63a8f55dcecc2b890effc02c98e0e (MD5)<br>O presente trabalho propõe-se a modelar, analisar, e comparar os efeitos do escoamento de um fluido dentro de um tubo elástico. Esses efeitos, por sua vez, serão ocasionados por uma variação de pressão nesse fluido. Para tanto, através das propriedades físicas e mecânicas do tubo e do fluido, foi calculado o deslocamento da parede

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35

Thiriat, Paul. "FLUID-STRUCTURE INTERACTION : EFFECTS OF SLOSHING IN LIQUID-CONTAINING STRUCTURES." Thesis, KTH, Bro- och stålbyggnad, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-125353.

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This report presents the work done within the framework of my master thesis in the program Infrastructure Engineering at KTH Royal Institute of Technology, Stockholm. This project has been proposed and sponsored by the French company Setec TPI, part of the Setec group, located in Paris. The overall goal of this study is to investigate fluid-structure interaction and particularly sloshing in liquid-containing structures subjected to seismic or other dynamic action. After a brief introduction, the report is composed of three main chapters. The first one presents and explains fluid-structure inte

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36

Förster, Christiane [Verfasser]. "Robust methods for fluid-structure interaction with stabilised finite elements / von Christiane Förster." Stuttgart : Inst. für Baustatik und Baudynamik, 2007. http://d-nb.info/996825177/34.

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37

Ni, Mong-Tang. "Analysis of fluid structure interaction problem using immersed boundary method with a finite element approach /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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38

Chun, Sangeon. "Nonlinear Fluid-Structure Interaction in a Flexible Shelter under Blast Loading." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/29849.

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Recently, numerous flexible structures have been employed in various fields of industry. Loading conditions sustained by these flexible structures are often not described well enough for engineering analyses even though these conditions are important. Here, a flexible tent with an interior Collective Protection System, which is subjected to an explosion, is analyzed. The tent protects personnel from biological and chemical agents with a pressurized liner inside the tent as an environmental barrier. Field tests showed unexpected damage to the liner, and most of the damage occurred on tent's

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39

Beton, Christopher William Hartley. "Application of the Boundary Element Method to the detachment, oscillation and interaction of gas bubbles in a fluid." Thesis, University of Cambridge, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261660.

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40

Bordin, Franciele Stail. "Análise do efeito da interação fluido-estrutura nas forças fluidodinâmicas em um elemento de pá flexível 3D." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2014. http://hdl.handle.net/10183/108499.

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Elementos de materiais flexíveis são empregados em diversas aplicações na engenharia, como por exemplo, em pás de turbinas eólicas. O comportamento do escoamento é afetado pela alteração na forma da estrutura. Muitas vezes, seu movimento e deformação são induzidos pelas próprias forças fluidodinâmicas. O trabalho apresenta o estudo de escoamentos externos envolvendo a interação fluido-estrutura, com o interesse voltado ao comportamento de pás de turbinas eólicas. Simulações numéricas são realizadas com o intuito de avaliar o efeito que a deformação da estrutura, devido à resposta elástica às f

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41

Irfanoglu, Bulent. "Boundary Element-finite Element Acoustic Analysis Of Coupled Domains." Phd thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605360/index.pdf.

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This thesis studies interactions between coupled acoustic domain(s) and enclosing rigid or elastic boundary. Boundary element-finite element (BE-FE) sound-structure interaction models are developed by coupling frequency domain BE acoustic and FE structural models using linear inviscid acoustic and elasticity theories. Flexibility in analyses is provided by discontinuous triangular and quadrilateral elements in the BE method (BEM), and a rectangular plate and a triangular shell element in the FE method (FEM). An analytical formulation is developed for an extended fundamental sound-struct

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42

Macey, P. C. "Acoustic and structure interaction problems using finite and boundary elements." Thesis, University of Nottingham, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.481846.

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43

Cicigliano, Emerson Carlos dos Santos. "Análise numérica do escoamento de fluido em tubos elásticos /." Ilha Solteira : [s.n.], 2010. http://hdl.handle.net/11449/94514.

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Resumo: O presente trabalho propõe-se a modelar, analisar, e comparar os efeitos do escoamento de um fluido dentro de um tubo elástico. Esses efeitos, por sua vez, serão ocasionados por uma variação de pressão nesse fluido. Para tanto, através das propriedades físicas e mecânicas do tubo e do fluido, foi calculado o deslocamento da parede do tubo, vazão e velocidade do fluido. Essa modelagem tem como intenção comparar numericamente um arranjo que visa simular uma pulsação com características próximas as do coração humano. Através da construção de duas geometrias cilíndricas que representam dom

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44

Silva, Emilio Carlos Nelli. "Modelagem vibracional de transdutores de ultra-som piezoelétricos pelo método de elementos finitos." Universidade de São Paulo, 1993. http://www.teses.usp.br/teses/disponiveis/3/3132/tde-11072017-091843/.

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Apresentam-se as bases teóricas do Método de Elementos Finitos (MEF) piezoelétrico, e a sua aplicação na modelagem de transdutores de ultra-som piezoelétricos, que consiste na determinação das características vibracionais (frequências de ressonância e anti-ressonância, modos de vibrar e coeficiente de acoplamento eletromecânico), obtenção da curva de admitancia, análise transiente da estrutura piezoelétrica sujeita a uma excitação pulsada e análise da influência da variação das constantes piezoelétricas do transdutor com o raio. Utilizando-se o MEF aplicado a acústica obteve-se o campo acústic

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Doyle, Matthew Gerard. "Simulation of Myocardium Motion and Blood Flow in the Heart with Fluid-Structure Interaction." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20166.

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The heart is a complex organ and much is still unknown about its mechanical function. In order to use simulations to study heart mechanics, fluid and solid components and their interaction should be incorporated into any numerical model. Many previous studies have focused on myocardium motion or blood flow separately, while neglecting their interaction. Previous fluid-structure interaction (FSI) simulations of heart mechanics have made simplifying assumptions about their solid models, which prevented them from accurately predicting the stress-stain behaviour of the myocardium. In this work, a

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Bathe, Mark 1975. "A fluid-structure interaction finite element analysis of pulsatile blood flow through a compliant stenotic artery." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9842.

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Hellgren, Rikard. "Influence of Fluid Structure Interaction on a Concrete Dam during Seismic Excitation : -Parametric analyses of an Arch Dam-Reservoir-Foundation system." Thesis, KTH, Betongbyggnad, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-145655.

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The aim of this study is to investigate how Fluid-Structure interaction is included in numerical earthquake analyses of dams. The base for this project is theme A from the 12th international benchmark workshop on numerical analysis of dams, which was held in October 2013. The focus of theme A was how to account for the fluid structure interaction in numerical earthquake analyses of dams. To highlight how engineers and researchers include this interaction in their analysis, a literature review of the modeling choices and conclusions from all participants are included. Since the workshop contai

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Yang, Qing. "SPH Simulation of Fluid-Structure Interaction Problems with Application to Hovercraft." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/26785.

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A Computational Fluid Dynamics (CFD) tool is developed in this thesis to solve complex fluid-structure interaction (FSI) problems. The fluid domain is based on Smoothed Particle Hydro-dynamics (SPH) and the structural domain employs large-deformation Finite Element Method (FEM). Validation tests of SPH and FEM are first performed individually. A loosely-coupled SPH-FEM model is then proposed for solving FSI problems. Validation results of two benchmark FSI problems are illustrated (Antoci et al., 2007; Souto-Iglesias et al., 2008). The first test case is flow in a sloshing tank interacting wit

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Suliman, Ridhwaan. "Development of parallel strongly coupled hybrid fluid-structure interaction technology involving thin geometrically non-linear structures." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/24288.

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This work details the development of a computational tool that can accurately model strongly-coupled fluid-structure-interaction (FSI) problems, with a particular focus on thin-walled structures undergoing large, geometrically non-linear deformations, which has a major interest in, amongst others, the aerospace and biomedical industries. The first part of this work investigates improving the efficiency with which a stable and robust in-house code, Elemental, models thin structures undergoing dynamic fluid-induced bending deformations. Variations of the existing finite volume formulation as wel

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Braun, Alexandre Luis. "Simulação numérica na engenharia do vento incluindo efeitos de interação fluido-estrutura." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2007. http://hdl.handle.net/10183/10592.

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O objetivo deste trabalho é estudar e desenvolver procedimentos numéricos adequados para a análise de problemas da Engenharia do Vento Computacional (EVC). O escoamento é analisado a partir das equações de Navier-Stokes para um fluido Newtoniano e de uma equação de conservação de massa considerando a hipótese de pseudo-compressibilidade, ambas em um processo isotérmico. Na presença de escoamentos turbulentos emprega-se a Simulação de Grandes Escalas (“LES”) com os modelos clássico e dinâmico de Smagorinsky para as escalas inferiores à resolução da malha. Dois modelos numéricos de Taylor-Galerk

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