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Dissertations / Theses on the topic 'Hydrodynamic mesh'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Conroy, Colton J. "ADmesh: An ADvanced Mesh Generator for Hydrodynamic Models." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1291232764.

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2

Mattioli, Dominik D. Mattioli. "QuADMESH+: A Quadrangular ADvanced Mesh Generator for Hydrodynamic Models." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500627779532088.

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3

Haworth, Thomas James. "Radiation hydrodynamic models and simulated observations of radiative feedback in star forming regions." Thesis, University of Exeter, 2013. http://hdl.handle.net/10871/14465.

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This thesis details the development of the radiation transport code torus for radiation hydrodynamic applications and its subsequent use in investigating problems regarding radiative feedback. The code couples Monte Carlo photoionization with grid-based hydrodynamics and has the advantage that all of the features available to a dedicated radiation transport code are at its disposal in RHD applications. I discuss the development of the code, including the hydrodynamics scheme, the adaptive mesh refinement (AMR) framework and the coupling of radiation transport with hydrodynamics. Extensive test

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4

Неня, М. В., Наталія Олегівна Зінченко, Наталия Олеговна Зинченко та ін. "Безітераційне розв'язання геометричної задачі побудови меридіанної проекції робочого колеса відцентрового насоса". Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/10411.

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5

Landrum, Evan. "Anisotropic parameters of mesh fillers relevant to miniature cryocoolers." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/28159.

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Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Ghiaasiaan, S. Mostafa; Committee Member: Desai, Prateen; Committee Member: Jeter, Sheldon; Committee Member: Kirkconnell, Carl.

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6

Maršálek, Ondřej. "Návrh ojnice vznětového leteckého motoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229990.

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The thesis deals with complex connecting rod design of two stroke diesel engine with regard to minimising its weight. Three versions of design are suggested and for each of them the stress analyses are implemented and the fatigue safety factors are determined. On the basis of results of implemented analyses and evaluation of all the aspects the most appropriate design is chosen and the production drawing is drawn according to it. In the conclusion, hydrodynamic lubrication plain bearings, which are the integral part of every connecting rod, are designed.

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Taileb, Saïd. "Vers des simulations numériques prédictives des détonations gazeuses : influence de la cinétique chimique, de l’equation d’etat et des effets tridimensionnels Influence of the chemical modeling on the quenching limits of gaseous detonation waves confined by an inert layer Computation of the mean hydrodynamic structure of gaseous detonations with losses Numerical study of 3D gaseous detonations in a square channel." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2020. http://www.theses.fr/2020ESMA0012.

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La présente étude s’inscrit dans le cadre général des simulations numériques des détonations dans des conditions non-idéales. Les configurations abordées correspondent à des écoulements rencontrés dans les accidents industriels ainsi que dans les moteurs à détonation rotative, dans lequel le combustible est injecté à des pressions élevées dans un milieu confiné par des gaz inertes. Les simulations conduites reposent sur un code de simulation numérique RESIDENT (REcycling mesh SImulation of DEtonations) développé à l’Institut Pprime. Il s’appuie sur des schémas numériques d’ordre élevé adaptés

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8

Gretland, Steffen Khoo. "Hydrodynamics of fishing gear at twine and mesh scales : an experimental study." Thesis, University of Aberdeen, 2015. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=227581.

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This study on the hydrodynamics of fishing gear focuses on fish nets. A multi-scale concept has been introduced. By decomposing the fish net structure into 4 distinct scales of flow structure interaction (twine, node, mesh and substructure scales) the complexity is reduced with the potential to integrate new knowledge at each scale to form an overall picture of flow-gear interactions. Within the scope and time-frame of the project, experiments were carried out at the twine and mesh scales. Two sets of experiments were designed at twine scale. The first featured synchronous velocity and drag fo

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9

Buntemeyer, Lars [Verfasser], and Robi [Akademischer Betreuer] Banerjee. "Characteristics based Radiative Transfer for Parallel Adaptive Mesh Refinement Hydrodynamics / Lars Buntemeyer. Betreuer: Robi Banerjee." Hamburg : Staats- und Universitätsbibliothek Hamburg, 2015. http://d-nb.info/1078358257/34.

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10

Chen, Zipeng. "A Smoothed Particle Hydrodynamics Approach for Modelling Meso-scale Fluid–Fracture Interaction." Thesis, The University of Sydney, 2021. https://hdl.handle.net/2123/28188.

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The fluid–fracture interaction at meso-scale is vital in numerous applications and challenging for numerical studies. During this process, the solid deforms or even damages due to the force transmitted from the surrounding fluid, whereas the deformation and failure of the solid in turn change the flow behaviour. Besides, the surface tension and wettability at meso-scale can have considerable effects on fluid behaviour. As a particle-based approach, the smoothed particle hydrodynamics (SPH) has shown its capability in modelling the flow at multiscale and potential in reproducing the fracture. T

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11

Canducci, Marco. "Adaptive-mesh refinement hydrodynamical simulations of cold gas clouds in the hot corona of the Milky Way." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017. http://amslaurea.unibo.it/12832/.

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Le galassie star-forming, come la Via Lattea, hanno formato stelle durante tutta la propria vita (~ 12 Gyr). Tuttavia, tipicamente la massa di gas contenuta nel disco di tali galassie può sostenere la formazione stellare solo per pochi Gyr. Tale problema (gas-consumption dilemma) suggerisce la necessità di un continuo accrescimento di gas freddo da parte del disco della galassia ad un tasso di ~ 1 M_Sol /yr. Modelli teorici cosmologici e recenti osservazioni in banda X mostrano che tali galassie sono circondate da corone di gas caldo alla temperatura viriale (T ~ 10^6 K per la MW). Queste cor

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12

Mouallem, Joseph. "Effects of sub-grid gas turbulence on the meso-scale hydrodynamics of fluidized gas-solid flows." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-08112018-170038/.

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Filtered two-fluid models used to perform large scale simulations of gas-solid fluidized flows of industrial risers require closures for filtered parameters such as filtered and residual stresses, and interphase interaction forces mainly effective drag. Closure models for those filtered parameters may be derived by averaging over results of highly resolved simulations with microscopic two-fluid modeling. This work is a contribution in that context. Recent models for filtered parameters have been written as functions of filter size, filtered solid volume fraction, and filtered slip velocity. A

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13

Niaki, Seyed Reza Amini. "Effects of inter particle friction on the meso-scale hydrodynamics of dense gas-solid fluidized flows." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/18/18147/tde-10122018-165927/.

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Gas-solid fluidized bed reactors are widely applied in chemical and energy industries, and their design and scale-up are virtually empirical, extremely expensive and time consuming. This scenario has motivated the development of alternative theoretical tools, and two-fluid modeling, where gas and particulate are both treated as interpenetrating continuum phases, has appeared as a most promising approach. Owing to the large domains to be resolved in real-scale fluidized bed reactors, only filtered modeling approaches are feasible, and closure models become necessary to recover sub-grid effects

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14

Konduru, Raj Narayan. "Coupled Conduction-Convection-Radiation heat transfer using Mesh-less methods : Application to porous heat exchanger." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0190.

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Cette recherche se concentre sur la récupération de chaleur dans les industries fonctionnant à haute température, telles que la métallurgie, la sidérurgie, le ciment et la production de verre, dans le dessein de diminuer les rejets de gaz à effet de serre. Une approche efficace consiste à incorporer une structure poreuse dans l'échangeur de chaleur afin d'améliorer les taux de transfert de chaleur tout en minimisant les pertes de charge. Dans un premier temps, des expériences ont été menées avec des échangeurs de chaleur poreux dotés de structures ressemblant à de la mousse à cellules de Kelvi

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15

Decote, Maxence. "Numerical modelling of an EHL contact undergoing multiple overrollings." Electronic Thesis or Diss., Lyon, INSA, 2024. http://www.theses.fr/2024ISAL0096.

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Les roulements à billes sont des éléments cruciaux pour une boîte de vitesse d’hélicoptère, car ils lui permettent de voler. En effet, une défaillance de ces éléments peut entraîner une fin dramatique de l’hélicoptère, comme un crash. Ce travail a pour but de mieux comprendre le fonctionnement d’un roulement à billes dans des conditions de défaillance de lubrification. Afin de réaliser cela, ce travail ne va pas considérer un roulement entier (trop compliqué). Il va se focaliser sur un contact entre un élément roulant et une bande de roulement. Il constitue une première étape dans la compréhen

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16

Oliva, Eduardo. "Amélioration d'un code hydrodynamique avec transport der ayonnement et maillage avec raffinement adaptatif (AMR) et son application aux lasers X." Palaiseau, Ecole polytechnique, 2010. http://pastel.archives-ouvertes.fr/docs/00/55/93/53/PDF/Oliva.pdf.

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L'injection d'harmoniques dans des amplificateurs gazeux génère des faisceaux de rayonnement X de grand qualité. Puisque les amplificateurs basés sur cible solide sont plus denses que ceux générés sur cible gazeuse, des impulsions d'énergie supérieure et plus courtes sont attendue. Cependant, les expériences réalisées n'ont pas présenté d'énergies supérieures à 90 nJ et des durées inférieures à 1 ps. Dans cette thèse nous nous sommes concentrés sur le problème de la différence entre l'énergie extraite et celle prédite, avec pour objectif d'obtenir des faisceaux de quelques dizaines de microjou

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17

Kokkonen, Toni. "CFD analysis of stepped planing vessels." Thesis, KTH, Mekanik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-250023.

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High speed planing hulls are currently widely used for example in recreational and emergency vessel applications. However, very little CFD research has been done for planing vessels, especially for those with stepped hulls. A validated CFD method for planing stepped hulls could be a valuable improvement for the design phase of such hulls. In this thesis, a CFD method for stepped hulls, with a primary focus on two-step hulls, is developed using STAR-CCM+. As a secondary objective, porpoising instability of two-step hulls is investigated. The simulations are divided into two parts: In the first

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18

Marioni, Luca. "Modélisation numerique et couplage électromagnétique-CFD dans les procédés decoulée." Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLEM011/document.

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Beaucoup de procédés utilisés dans l'industrie sidérurgique (coulée de lingots,coulée continue, …) peuvent générer des défauts : macro-ségrégation, mauvaises propriétés de la microstructure, défauts surfaciques. Ces problèmes peuvent être résolus par un contrôle de la température et de l’écoulement d'acier liquide. Le brassage électromagnétique (EMS) est une technique largement utilisée pour contrôler l’écoulement d'acier liquide par l’imposition d'un champ électromagnétique. Cette technique est complexe car elle couple plusieurs types de problèmes physiques:écoulement multiphasique, solidific

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19

Beckstein, Pascal. "Methodenentwicklung zur Simulation von Strömungen mit freier Oberfläche unter dem Einfluss elektromagnetischer Wechselfelder." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2018. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-232474.

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Im Bereich der industriellen Metallurgie und Kristallzüchtung treten bei zahlreichen Anwendungen, wo magnetische Wechselfelder zur induktiven Beeinflussung von leitfähigen Werkstoffen eingesetzt werden, auch Strömungen mit freier Oberfläche auf. Das Anwendungsspektrum reicht dabei vom einfachen Aufschmelzen eines Metalls in einem offenen Tiegel bis hin zur vollständigen Levitation. Auch der sogenannte RGS-Prozess, ein substratbasiertes Kristallisationsverfahren zur Herstellung siliziumbasierter Dünnschichtmaterialien, ist dafür ein Beispiel. Um bei solchen Prozessen die Interaktion von Magnetf

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20

Lei, Ching Yu, and 雷清宇. "Research of develop the unstructured moving mesh technique to predict the hydrodynamic performance of such underwater military vehicle." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/41728793791786696687.

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碩士<br>國防大學中正理工學院<br>造船工程研究所<br>93<br>The earth is covered by almost 70% of the oceans. Since the oceans undergoes the effects from the earth motion, temperature cycle etc., they are always moving, and the environment below the ocean surface is complicated all the time. As the ancients want to put wings to fly in the blue sky, the unknown deeply sea world has been the mystery kingdom that human being desire to explore. Therefore, among the research relevant to the ocean engineering, the submarine’s motion flow is always a focus in this field. In order to predict the behavior of the submarine mo

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21

Simmons, Kim Harding. "Implicit adaptive mesh radiation hydrodynamics." 1993. http://catalog.hathitrust.org/api/volumes/oclc/31042521.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1993.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 127-133).

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22

Tseng, Wei-Yi, and 曾薇頤. "Smoothed Particle Hydrodynamics Method with Unstructured Mesh Boundary Condition." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/14152069938100982108.

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碩士<br>國立臺灣大學<br>工程科學及海洋工程學研究所<br>100<br>This thesis is about combining unstructured mesh boundary method into Smoothed Particle Hydrodynamics Method. Smoothed Particle Hydrodynamics Method, also known as SPH, is a mesh-less method of fluid dynamics methods. It has been researched for over 30 years, and there is a open-resources program that uses SPH, SPHysics. Therefore we choose to use SPH as our researching tools. SPH uses conservation laws as its governing equations. As a particle method, SPH uses a set of discrete particles to define the model, and then use a kernel function to approximate

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23

Chang, Chia-Yuan, and 張家源. "Analysis of Meso-scale Heat Exchangers with Magneto-hydrodynamic Pumps." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/66289383642523303161.

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博士<br>國立清華大學<br>動力機械工程學系<br>92<br>Electronic devices have been mainly relying on passive heat exchangers to transfer heat away for preventing catastrophic thermal problems in the past. Nowadays, passive heat exchangers no longer provide ample cooling efforts due to stringent spatial limitations of high power-density systems. In this dissertation, a novel heat exchanger system, based upon magneto-hydrodynamic theory for pumping electrically conducting coolant, has been studied and experimentally verified in details. Governing equations of electrically conducting fluid driven by the Lorentz f

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24

Fernandez, Ricardo. "An Object-Oriented, Python-Based Moving Mesh Hydrodynamics Code Inspired by Astrophysical Problems." Thesis, 2018. https://doi.org/10.7916/D86M4Q9B.

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The role of radiative cooling plays an important role in the formation of structures in collapsing gas. In this dissertation I examine the impact of cooling in two formation scenarios: first, the role of H2 cooling in collapsing gas in primordial dark matter halos in the possible formation of supermassive black holes; second, low metallicity cooling in collapsing clouds and its possible role in explaining low-metallicity globular clusters. Further, I introduce a new hydrodynamics code, with a design guided by current software principles. In chapter 2, I examined the proposed mechanism to expla

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25

Cartwright, BK. "The study of ship motions in regular waves using a mesh-free numerical method." Thesis, 2012. https://eprints.utas.edu.au/15896/1/front-_Cartwright-thesis.pdf.

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Mesh-free methods are becoming popular in the maritime engineering fields for their ability to handle non-benign fluid flows. Predictions of ship motions made using mesh-free methods need to be validated for benign conditions, such as regular waves, before progressing to nonbenign conditions. This thesis aims to validate the response of a ship in regular waves by the Smoothed Particle Hydrodynamics (SPH) mesh-free method. Specifically, the SPH technique uses a set of interpolation points, designated SPH particles, located at nodes that track the centre of discrete fluid volumes with time

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26

Beckstein, Pascal. "Methodenentwicklung zur Simulation von Strömungen mit freier Oberfläche unter dem Einfluss elektromagnetischer Wechselfelder." Doctoral thesis, 2017. https://tud.qucosa.de/id/qucosa%3A30749.

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Im Bereich der industriellen Metallurgie und Kristallzüchtung treten bei zahlreichen Anwendungen, wo magnetische Wechselfelder zur induktiven Beeinflussung von leitfähigen Werkstoffen eingesetzt werden, auch Strömungen mit freier Oberfläche auf. Das Anwendungsspektrum reicht dabei vom einfachen Aufschmelzen eines Metalls in einem offenen Tiegel bis hin zur vollständigen Levitation. Auch der sogenannte RGS-Prozess, ein substratbasiertes Kristallisationsverfahren zur Herstellung siliziumbasierter Dünnschichtmaterialien, ist dafür ein Beispiel. Um bei solchen Prozessen die Interaktion von Magnetf

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