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Relevant bibliographies by topics / Jet Surface Interaction / Dissertations / Theses

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Dissertations / Theses on the topic 'Jet Surface Interaction'

Author: Grafiati

Published: 30 June 2021

Last updated: 29 July 2025

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1

Kumar, Purushotam. "Liquid jet interaction with a moving surface." Thesis, University of British Columbia, 2010. http://hdl.handle.net/2429/36767.

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An experimental study was conducted to study the splash-deposition characteristics of a liquid jet impinging on a moving surface. The main focus of this study was to determine the effects of fluid, flow and surface properties on the outcome of the jet impingement. Several parameters such as fluid viscosity, elasticity and surface tension, jet and surface velocity, jet diameter surface wettability and surface roughness were changed and their effects on splash-deposition characteristics were analyzed during this research work. For non-Newtonian fluids increase in the yield stress and consistenc

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2

Feyedelem, Michael S. "Interaction of a swirling jet with a free surface." Thesis, Monterey, California. Naval Postgraduate School, 1996. http://hdl.handle.net/10945/8548.

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Approved for public release; distribution is unlimited<br>The turbulent flow field of a swirling jet issuing from a nozzle, beneath and parallel to a free surface has been studied in as much detail as possible using a three-component laser Doppler velocimeter and flow visualization. The results have shown that the swirl leads to the faster spreading and quicker mixing of the jet. For strongly swirling jets (S = 0.522), the similarity is not reached within ten diameters downstream. The results have also shown that both the acial and tangential velocity components decrease outward from the jet a

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3

Baier, Florian. "Noise Radiation from a Supersonic Nozzle with Jet/Surface Interaction." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1617108352134538.

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4

Keshavarz, Bavand. "Newtonian and elastic liquid jet interaction with a moving surface." Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/33875.

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In the railroad industry a friction modifying agent may be applied to the rail or to the wheel in the form of a liquid jet. In this mode of application the interaction between the high speed liquid jet and a fast moving surface is important. Seven different Newtonian liquids with widely varying shear viscosities along with twelve different solutions of polyethylenoxide (PEO) and water with varying relaxation times were tested to isolate the effect of viscosity and elasticity from other fluid properties. Tests for the Newtonian liquids were done with five surfaces having different roughness hei

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5

Park, Heungsup. "Drop impingement and interaction with a solid surface." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/8236.

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6

PEREZ, MARIA ANGELICA ACOSTA. "NUMERICAL STUDY OF THE INTERACTION BETWEEN A SUPERSONIC JET AND PLANAR SURFACE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12412@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Neste trabalho é apresentado o estudo da interação entre um jato supersônico e uma superfície plana, com o objetivo de analisar o comportamento do campo de velocidade, pressão e temperatura do escoamento. Este estudo encontra sua motivação no processo de descamação térmica de rochas duras, a qual pode resultar da iteração entre um jato a alta pressão e temperatura e a rocha. Este processo, que pode ser útil na perfuração de rochas duras e profundas, ocorre devido ao acúm

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7

Gallagher, Meurig Thomas. "The initial development of a jet caused by fluid, body and free surface interaction." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5913/.

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The aim of this thesis is to investigate the problem of a rigid plate, inclined at an angle α ∈(0,1/2π) the horizontal, accelerating uniformly from rest into or away from a semi-infinite expanse of inviscid, incompressible fluid. This work generalized that of Needham, Chamberlain, and Billingham\(^1\), by considering the case of negative plate accelerations. We use the method of matched asymptotic expansions to investigate the asymptotic structure of the solution to the free surface evolution problem as t→0\(^+\), paying particular attention to the innermost asymptotic region encompassing the

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8

Cosimi, Julien. "Caractérisations d'un jet de plasma froid d'hélium à pression atmosphérique." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30136.

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Les jets de plasma froid à la pression atmosphérique connaissent un réel engouement dans de nombreux domaines du biomédical depuis la dernière décennie. Dans les différentes applications de ces jets, le plasma généré est amené à interagir avec de nombreux types de surfaces. Les jets de plasma ont une influence sur les surfaces traitées, mais il est maintenant connu que les surfaces traitées influencent également le plasma en fonction de leurs caractéristiques. Le travail mené dans cette thèse a donc pour but de caractériser un jet de plasma froid d'hélium à la pression atmosphérique en contact

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9

Barillon, Bruno. "Interaction entre un jet gazeux chargé de particules réactives et une surface chaude : application à un procédé de dépôt de couches minces." Vandoeuvre-les-Nancy, INPL, 1996. http://docnum.univ-lorraine.fr/public/INPL_T_1996_BARILLON_B.pdf.

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Ce travail présente les résultats relatifs à l'étude d'un procédé original de dépôt de couches minces. Celui-ci repose sur la projection de particules transportées par un jet gazeux turbulent, sur un substrat chaud où elles subissent une transformation chimique donnant naissance à un dépôt uniforme et adhérent. Le rendement global du procédé dépend de plusieurs processus couples: hydrodynamique (écoulement du gaz vecteur et des particules), transferts de chaleur et de matière (gaz-particules-substrat) et caractéristiques chimiques des réactions. Une des originalités du travail est d'étudier ch

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10

Hofmans, Marlous. "Experimental characterization of helium plasma jets." Thesis, Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAX062.

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Cette thèse porte sur l’étude d’un jet de plasma d'hélium à pression atmosphérique alimenté par des impulsions positives unipolaires à une fréquence de l’ordre du kHz. Des expériences sont effectuées pour caractériser la dynamique de propagation, la structure de l'écoulement et la température dans un jet en expansion libre, ainsi que l'influence d'une cible métallique sur le plasma.La spectroscopie à polarisation Stark indique un champ électrique axial d'environ 10 kV/cm dans le capillaire du jet et une augmentation jusqu'à 20 kV/cm dans le panache, qui est constante pour différentes amplitude

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11

Bertosio, Jean-Marc. "Caractérisation de surfaces métalliques et de couches minces par diffusion d'atomes d'hélium : application au système Pb/Cu(110)." Vandoeuvre-les-Nancy, INPL, 1991. http://www.theses.fr/1991INPL133N.

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La première partie de la thèse présente le développement d'un dispositif d'étude de surface par diffusion d'atomes d'hélium (TEAS). Celui-ci est constitué d'une enceinte à ultra-vide équipée d'un faisceau moléculaire, ainsi que des instruments classiques d'analyse de surfaces, tels qu'un diffracteur d'électrons lents (LEED), un analyseur AUGER et un spectromètre de masse. L'ensemble de diffusion d'hélium comprend une source de faisceau moléculaire supersonique, ainsi qu'une jauge à stagnation de type Bayard-Alpert. Celle-ci est montée sur un goniomètre permettant la détection spatiale des fais

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12

Daniel, Richard Crosson. "Ink-media interactions in ink-jet printing /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/9829.

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13

Hamamda, Mehdi. "Perspectives nouvelles pour l'optique atomique en jets : Interaction de van der Waals-Zeeman et milieux d'indice négatif pour les ondes de matière." Phd thesis, Université Paris-Nord - Paris XIII, 2011. http://tel.archives-ouvertes.fr/tel-00632807.

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Dans la première partie de cette thèse, nous développons l'étude expérimentale et théorique d'un type d'interactions à très courte portée (moins de 10nm), dites de van der Waals-Zeeman, entre un atome de gaz rare et une surface métallique. Il s'agit d'utiliser d'une part un jet supersonique d'atomes métastables pour diverse espèces (Ne*, Ar*, Kr*) et, d'autre part, un jet d'argon métastable Ar*(3P2) décéléré par un ralentisseur Zeeman standard. Dans le premier cas, on observe un accroissement de la portée de l'interaction de van der Waals-Zeeman en fonction de l'augmentation de la constante d'

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14

Tatin, Antoine. "Instabilités aéroélastiques d’une surface souple impactée par des jets d’air." Electronic Thesis or Diss., Institut polytechnique de Paris, 2025. http://www.theses.fr/2025IPPAX001.

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Lors de la production de fines feuilles d’acier, le refroidissement par jets d’air impactant la surface métallique provoque fréquemment des instabilités de flottement ou des divergences soudaines de la bande sur la ligne de production. Ces instabilités se manifestent par des oscillations suivant l’un des modes propres de la bande ou par un déplacement brusque hors de sa position d’équilibre, et altèrent l’efficacité durefroidissement et réduisent la productivité de la ligne.Dans ce contexte, l’apparition du flottement est étudiée afin de mieux comprendre ces instabilités et de les atténuer. Un

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15

Slikboer, Elmar. "Investigation of Plasma Surface Interactions using Mueller Polarimetry." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLX093/document.

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Cette thèse examine une nouvelle méthode de diagnostic, appelée Polarimètrie de Mueller, pour l’étude des interactions plasma-surface. Cette technique d’imagerie permet la caractérisation optique résolue en temps des cibles exposées au plasma. Les matrices de Mueller mesurées sont analysées en utilisant la décomposition logarithmique donnant des informations polarimétriques sur la diattenuation, la dépolarisation et la biréfringence. Cette dernière est exploitée en examinant des matériaux optiquement actifs afin d’identifier des aspects spécifiques de l’interaction avec le plasma, tels que les

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16

Martrou, David. "Etude par microscopie à effet tunnel de la croissance par épitaxie de CdTe." Université Joseph Fourier (Grenoble), 2000. http://www.theses.fr/2000GRE10013.

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L'etude par microscopie a effet tunnel des surfaces (001) du cdte nous a permis de mettre en evidence la specificite des semiconducteurs ii-vi comparee aux iii-v et aux iv-iv. Le caractere ionique prononce des semiconducteurs ii-vi implique des interactions electrostatiques entre les cations et les anions. L'effet le plus frappant de la forte ionicite du cdte est l'orientation des bords de marches parallelement aux directions <100>. Pour les semiconducteurs iv-iv et iii-v, les bords de marches sont orientes suivant les directions <110>. Nous montrons que la formation des bords de marches <100>

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17

Captain, Janine Elizabeth. "Non-thermal Interactions on Low Temperature Ice and Aqueous Interfaces." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/6995.

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Electron-impact ionization of low-temperature water ice leads to H+, H2+, and H+(H2O)n=1-8 desorption. The threshold energy for ESD of H2+ from CI and H3O+ from PASW and ASW is 22 ± 3 eV. There is also a H2+ yield increase at 40 ± 3 eV and a 70 ± 3 eV threshold for ESD of H+(H2O)n=2-8 from PASW and ASW. H2+ production and desorption involves direct molecular elimination and reactive scattering of an energetic proton. Both of these channels likely involve localized two-hole one-electron and/or two-hole final states containing 4a1, 3a1 and/or 2a1 character. The 70 eV cluster ion threshol

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18

Ghahremanian, Shahriar. "Near-Field Study of Multiple Interacting Jets : Confluent Jets." Doctoral thesis, Linköpings universitet, Energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-113259.

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This thesis deals with the near-field of confluent jets, which can be of interest in many engineering applications such as design of a ventilation supply device. The physical effect of interaction between multiple closely spaced jets is studied using experimental and numerical methods. The primary aim of this study is to explore a better understanding of flow and turbulence behavior of multiple interacting jets. The main goal is to gain an insight into the confluence of jets occurring in the near-field of multiple interacting jets. The array of multiple interacting jets is studied when they ar

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19

Ahmed, Zahir Uddin. "An experimental and numerical study of surface interactions in turbulent swirling jets." Thesis, Edith Cowan University, Research Online, Perth, Western Australia, 2016. https://ro.ecu.edu.au/theses/1790.

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Convective heat transfer and drying processes are found in industrial applications from gas turbine blade cooling to drying of food products and paper. In many instances, these processes rely on either a single or an array of fluid jets which impinge onto a surface. Traditionally, non-swirling impinging jets have been used, but interest surrounds possible advantages from imposing swirl into these jets to further promote heat and mass transfer at the surface. The challenge of resolving this question is that including swirl further complicates fluid-surface interactions. Studies are faced with t

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20

Honohan, Andrew M. "The interaction of synthetic jets with cross flow and the modification of aerodynamic surfaces." Diss., Georgia Institute of Technology, 2003. http://hdl.handle.net/1853/20836.

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21

Svensson, Klas. "Experimental and Numerical Investigations of Confluent Round Jets." Doctoral thesis, Linköpings universitet, Energisystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-117066.

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Unconfined multiple interacting confluent round jets are interesting from a purely scientific point of view, as interaction between neighboring jets brings additional complexity to the flow field. Unconfined confluent round jets also exist in various engineering applications, such as ventilation supply devices, sewage disposal systems, combustion burners, chemical mixing or chimney stacks. Even so, little scientific attention has been paid to unconfined confluent round jets. The present work uses both advanced measurement techniques and computational models to provide deeper understanding of t

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22

Nielson, Joseph R. "Three Dimensional Characterization of Vocal Fold Fluid Structure Interactions." BYU ScholarsArchive, 2012. https://scholarsarchive.byu.edu/etd/3662.

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Voice quality is strongly linked to quality of life; those who suffer from voice disorders are adversely affected in their social, family, and professional relationships. An effort has been made to more fully understand the physics behind how the voice is created, specifically the fluid structure interactions that occur during vocal fold vibration. Many techniques have been developed and implemented to study both the motion of the vocal folds and the airflow that creates the motion. Until recently these techniques have sought to understand a highly three-dimensional phenomenon with 1D or 2D pe

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23

Gosset, Anne M. E. "Study of the interaction between a gas flow and a liquid film entrained by a moving surface." Doctoral thesis, Universite Libre de Bruxelles, 2007. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210731.

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This thesis is dedicated to the study of the interaction between a gas jet and a liquid film on a moving surface. This flow configuration corresponds to the gas-jet wiping technique, which is widely used in the coating industry to reduce and control the thickness of a liquid film dragged by a moving substrate. For that purpose, a turbulent slot jet impinges on the liquid surface, involving a runback flow and consequently a lower coating thickness downstream wiping. The different process parameters (nozzle pressure, nozzle to substrate standoff distance, slot width, substrate speed) allow contr

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24

Karam, Jean-Christophe. "Collision d'un atome métastable de gaz rare sur une surface nano ou micro-structurée et optique atomique." Phd thesis, Université Paris-Nord - Paris XIII, 2005. http://tel.archives-ouvertes.fr/tel-00383051.

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Dans cette thèse, on a montré l'occurrence de transitions exothermiques et endothermiques entre les niveaux métastables 3P_2 et 3P_0 dans la collision d'atomes de gaz rare avec une surface solide. Le développement d'une source d'atomes métastables utilisant le processus d'échange de métastabilité au sein d'un jet supersonique a permis ensuite d'observer la diffraction par un réseau de nanofentes, puis, dans une expérience de collision sur un réseau micrométrique en Cuivre en présence d'un champ magnétique externe, d'observer des transitions Zeeman au sein du niveau 3P_2. Le calcul, à partir de

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25

Yang, Pai-Hau, and 楊百皓. "Study on Initial Free- or Solid-Surface Interaction with a plane Submerged Jet." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/34331249212455305275.

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碩士<br>國立成功大學<br>水利及海洋工程學系<br>86<br>This thesis applied a numerical method to simulatea an inviscid planesubmerged jet that initially discharged from the bottom of a channel intothe shallow water as the first example to be studied.For the second example,flows for an initial jet into a confinedchannel with or without viscouseffects were examined. In addition, a model experiment was carried out toobserve the phenomenon of waterwaves on the free surface. The dependency oft

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26

Tzu-Jen, Hsu, and 許慈仁. "Numerical Studies on the Interactions of Surface Waves and a Submerged Plane Jet." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/84775440837693102503.

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碩士<br>國立成功大學<br>工程科學系<br>89<br>A numerical scheme was developed to solve the unsteady, two-dimensional Navier-Stokes equations and the exact free surface boundary conditions for simulating the interactions of surface waves and a submerged plane jet. The incident waves were generated by a numerical wavemaker set up in the computational domain. The main characteristics of the flow field were discussed by specifying the instantaneous velocity fields. The time history of the water elevation was shown for discussing the wave transformation. The velocity profile of the jet at different height ha

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27

Modak, Chandantaru Dey. "Droplet, Jets, and Leaky Surfaces." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5853.

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Surface structuring on a micro-nano scale, combined with a low surface energy coating, leads to anti-wetting properties. Such surfaces also exhibit other properties such as self-cleaning, antifouling, bacteriostatic, drag reduction, and anti-icing. Hierarchical structures with dual-scale roughness provide the superhydrophobic surface with lower droplet adhesion and better protection against failure (i.e., Wenzel transition). This understanding has led to the study of nanostructured sieves, as the sieve wires (having diameters ranging from 10 to 100 microns) provide the higher-level roughness r

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28

Mendes, Ricardo João Batista. "Laser Óptico Fluídica: dispersão de luz numa superfície livre líquida." Master's thesis, 2019. http://hdl.handle.net/10316/93545.

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Dissertação de Mestrado Integrado em Engenharia Mecânica apresentada à Faculdade de Ciências e Tecnologia<br>Sendo a área de análise dos fluídos uma área importante, faz sentido que haja cada vez mais evolução das técnicas para o seu estudo. Sendo a Conectividade Óptica uma técnica usada a alguns anos, faria sentido que mais tarde ou mais cedo, aparece-se uma técnica superior e derivada desta. É aí que entra a técnica laser, Laser Óptico-Fluídica, a qual apesar de ainda estar em desenvolvimento, já demonstra resultados promissores.A criação de técnicas não intrusivas são cada vez mais um pré-r

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