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Dissertations / Theses on the topic 'Gas-particle flows'

Author: Grafiati

Published: 4 June 2021

Last updated: 5 February 2022

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1

Strömgren, Tobias. "Model predictions of turbulent gas-particle shear flows." Doctoral thesis, KTH, Mekanik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12135.

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A turbulent two-phase flow model using kinetic theory of granularflows for the particle phase is developed and implmented in afinite element code. The model can be used for engineeringapplications. However, in this thesis it is used to investigateturbulent gas-particle flows through numerical simulations. The feedback from the particles on the turbulence and the meanflow of the gas in a vertical channel flow is studied. In particular,the influence of the particle response time, particle volumefraction and particle diameter on the preferential concentration ofthe particles near the walls, caus

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2

Slater, Shane Anthony. "Particle transport in laminar and turbulent gas flows." Thesis, University of Cambridge, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.624527.

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3

Zhang, Yonghao. "Particle-gas interactions in two-fluid models of gas-solid flows." Thesis, University of Aberdeen, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367375.

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Modelling gas-solid two-phase flows using a two-fluid approach has two main difficulties: formulating constitutive laws for the particulate stresses and modelling the gas turbulence modulation. Due to the complex nature of the gas-particle interactions, there is no universal model covering every flow regime. In this thesis, three flow regimes with distinctive characteristics are studied, i.e. the very dense regime where the solid volume fraction, <I>v</I><sub>2</sub>>5%, the dense flow regime where 5%≥1%, and the relatively dilute regime where 1%≥<I>v<sub>2</sub></I>>0.1%. In the very dense fl

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4

Yan, Fusheng Wood P. E. "Numerical study on turbulence modulation in gas-particle flows." *McMaster only, 2006.

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5

Strömgren, Tobias. "Modelling of turbulent gas-particle flow." Licentiate thesis, KTH, Mechanics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4639.

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<p>An Eulerian-Eulerian model for dilute gas-particle turbulent flows is</p><p>developed for engineering applications. The aim is to understand the effect of particles on turbulent flows. The model is implemented in a finite element code which is used to perform numerical simulations. The feedback from the particles on the turbulence and the mean flow of the gas in a vertical channel flow is studied. In particular, the influence of the particle response time and particle volume fraction on the preferential concentration of the particles near the walls, caused by the turbophoretic effect is exp

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6

Liu, Xue. "Instability and segregation in bounded gas-particle and granular flows." Saarbrücken VDM Verlag Dr. Müller, 2006. http://d-nb.info/988937298/04.

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7

Liu, Xue. "Instability and segregation in bounded gas-particle and granular flows /." Saarbrücken : VDM Verlag Dr. Müller, 2008. http://d-nb.info/988937298/04.

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8

Tsui, Chak M. "A computational model for gas-particle flows with distributed phase interfaces." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ28819.pdf.

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9

Hodgson, Sarah M. "Turbulence modulation in gas-particle flows, a comparison of selected models." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0003/MQ46074.pdf.

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10

Tian, Zhaofeng, and rmit tian@gmail com. "Numerical Modelling of Turbulent Gas-Particle Flow and Its Applications." RMIT University. Aerospace, Mechanical and Manufacturing Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080528.150211.

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The aim of this thesis is three-fold: i) to investigate the performance of both the Eulerian-Lagrangian model and the Eulerian-Eulerian model to simulate the turbulent gas-particle flow; ii) to investigate the indoor airflows and contaminant particle flows using the Eulerian-Lagrangian model; iii) to develop and validate particle-wall collision models and a wall roughness model for the Eulerian-Lagrangian model and to utilize these models to investigate the effects of wall roughness on the particle flows. Firstly, the Eulerian-Lagrangian model in the software package FLUENT (FLUENT Inc.)

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11

Bell, Robyn Anne, and Robyn Bell@csiro au. "Numerical modelling of multi-particle flows in bubbling gas-solid fluidised beds." Swinburne University of Technology, 2000. http://adt.lib.swin.edu.au./public/adt-VSWT20050902.132803.

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In Victoria, Australia, brown coal is utilised as a major source of energy for the power generation industry. Victorian and South Australian brown coals have a very high moisture content and therefore, the efficiencies of power generation in traditional pulverised fuel fired furnaces are low. Fluidised beds offer a number of advantages over conventional furnaces, leading to improvements in efficiency and environmental impact. A disadvantage with implementing fluidised bed technology is the issue of scale-up. Fluidised bed behaviour can alter significantly with changes in scale, because of thei

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12

Healy, David Patrick. "On the full Lagrangian approach and thermophoretic deposition in gas-particle flows." Thesis, University of Cambridge, 2003. https://www.repository.cam.ac.uk/handle/1810/219497.

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Theoretical and experimental studies of particle deposition in turbulent pipe flow have been carried out for over forty years, but some of the most important transport mechanisms are still not well understood. The first part of this thesis is concerned with the calculation of particle density when using Lagrangian methods to predict inertial particle transport in two-dimensional laminar fluid flows. Traditionally, Lagrangian calculations involve integrating the particle equations of motion along particle pathlines, and the particle density is obtained by applying a statistical averaging proced

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13

Cardwell, Nicholas Don. "Investigation of Particle Trajectories for Wall Bounded Turbulent Two-Phase Flows." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/29642.

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The analysis of turbulent flows provides a unique scientific challenge whose solution remains central to unraveling the fundamental nature of all fluid dynamics. Measuring and predicting turbulent flows becomes even more difficult when considering a two-phase flow, which is a commonly encountered engineering problem across many disciplines. One such example, the ingestion of foreign debris into a gas turbine engine, provided the impetus for this study. Despite more than 40 years of research, operation with a particle-laden inlet flow remains a significant problem for modern turbomachines.

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14

Park, Suhyeon. "Experimental Investigation of Flow and Wall Heat Transfer in an Optical Combustor for Reacting Swirl Flows." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/82349.

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The study of flow fields and heat transfer characteristics inside a gas turbine combustor provides one of the most serious challenges for gas turbine researchers because of the harsh environment at high temperatures. Design improvements of gas turbine combustors for higher efficiency, reduced pollutant emissions, safety and durability require better understanding of combustion in swirl flows and thermal energy transfer from the turbulent reacting flows to solid surfaces. Therefore, accurate measurement and prediction of the flows and heat loads are indispensable. This dissertation presents f

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15

Masson, Christian. "Numerical prediction of gas-solid particle flows over a wide range of concentration in irregular geometries." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41710.

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The formulation of a co-located equal-order Control-Volume-based Finite Element Method (CVFEM) for the solution of two-fluid models of two-dimensional, planar or axisymmetric, incompressible, gas-solid particle flows is presented in this thesis. The main focus is on the development of a numerical method that allows computer simulation of gas-solid particle flows over a wide range of solid-phase volume concentration in complex irregular geometries.<br>A general two-fluid mathematical model is presented. This model is essentially borrowed from published works in the area of granular flows. It is

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16

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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17

Pachler, Klaus, Thomas Frank, and Klaus Bernert. "Simulation of Unsteady Gas-Particle Flows including Two-way and Four-way Coupling on a MIMD Computer Architectur." Universitätsbibliothek Chemnitz, 2002. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200200352.

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The transport or the separation of solid particles or droplets suspended in a fluid flow is a common task in mechanical and process engineering. To improve machinery and physical processes (e.g. for coal combustion, reduction of NO_x and soot) an optimization of complex phenomena by simulation applying the fundamental conservation equations is required. Fluid-particle flows are characterized by the ratio of density of the two phases gamma=rho_P/rho_F, by the Stokes number St=tau_P/tau_F and by the loading in terms of void and mass fraction. Those numbers (Stokes number, gamma) define the f

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18

Bello, Oladele O. [Verfasser]. "Modelling particle transport in gas oil sand multiphase flows and its applications to production operations / submitted by Oladele O. Bello." [Clausthal-Zellerfeld] : [Univ.-Bibliothek], 2008. http://d-nb.info/990729931/34.

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19

Klinkov, Konstantin V. "Unsteady gas flows and particle dynamics in the shock layer formed by the impingement of a supersonic two-phase jet onto a plate /." Köln : DLR, Abt. Unternehmensorganisation und -information, 2005. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=014177140&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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20

Perkins, Hugh Douglas. "Development and Demonstration of a Computational Tool for the Analysis of Particle Vitiation Effects in Hypersonic Propulsion Test Facilities." Case Western Reserve University School of Graduate Studies / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1227553721.

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21

Du, Sart Colin F. "Design and prototyping of a test facility to investigate the transport properties of dilute phase gas-particle flows applicable to coal-fired power plants." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/24889.

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Understanding the properties of dilute phase gas-particle transport and the applicability of the different empirical correlations found in literature for these properties are crucial in the study of Pulverized Fuel conveying applicable to South African coal-fired power plants. Having access to a test facility in which empirical data can be generated under controlled operating conditions would enhance this understanding and will allow more informed application of these correlations. The aim of this thesis was to develop a concept design and prototype of a pneumatic conveying test facility that

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22

Gnanaselvam, Pritheesh. "Modeling Turbulent Dispersion and Deposition of Airborne Particles in High Temperature Pipe Flows." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1598016744932462.

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23

Klinkov, Konstantin [Verfasser], Dirk [Akademischer Betreuer] Ronneberger, and Martin [Akademischer Betreuer] Rein. "Unsteady gas flows and particle dynamics in the shock layer formed by the impingement of a supersonic two-phase jet onto a plate / Konstantin Klinkov. Gutachter: Martin Rein. Betreuer: Dirk Ronneberger." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2005. http://d-nb.info/1042971676/34.

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24

Klinkov, Konstantin V. [Verfasser], Dirk [Akademischer Betreuer] Ronneberger, and Martin [Akademischer Betreuer] Rein. "Unsteady gas flows and particle dynamics in the shock layer formed by the impingement of a supersonic two-phase jet onto a plate / Konstantin Klinkov. Gutachter: Martin Rein. Betreuer: Dirk Ronneberger." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2005. http://nbn-resolving.de/urn:nbn:de:gbv:7-webdoc-25-7.

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25

Weit, Anne. "Etude expérimentale de la concentration de particules solides dans les écoulements volcaniques biphasés turbulents." Thesis, Université Clermont Auvergne‎ (2017-2020), 2018. http://www.theses.fr/2018CLFAC060.

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Des mélanges de gaz et de particules sont présents dans divers environnements géophysiques. De tels mélanges chauds sont générés par des éruptions volcaniques explosives et comprennent des écoulements de conduit, des jets et des panaches, ainsi que des courants de densité pyroclastiques. La concentration de particules dans ces mélanges volcaniques peut varier fortement, allant de concentrations élevées (>50 % en volume) dans les écoulements denses fluidisés à des concentrations très faibles dans les suspensions diluées dans lesquelles les particules sont mises en suspension par la phase gaz

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26

Keita, Sana. "Eulerian Droplet Models: Mathematical Analysis, Improvement and Applications." Thesis, Université d'Ottawa / University of Ottawa, 2018. http://hdl.handle.net/10393/37907.

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The Eulerian description of dispersed two-phase flows results in a system of partial differential equations describing characteristics of the flow, namely volume fraction, density and velocity of the two phases, around any point in space over time. When pressure forces are neglected or a same pressure is considered for both phases, the resulting system is weakly hyperbolic and solutions may exhibit vacuum states (regions void of the dispersed phase) or localized unbounded singularities (delta shocks) that are not physically desirable. Therefore, it is crucial to find a physical way for pr

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27

Nerisson, Philippe. "Modélisation du transfert des aérosols dans un local ventilé." Thesis, Toulouse, INPT, 2009. http://www.theses.fr/2009INPT001H/document.

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La protection des opérateurs et la surveillance des ambiances de travail en cas de mise en suspension d’aérosols radioactifs, dans un local ventilé d’une installation nucléaire, requièrent la connaissance de l’évolution spatio-temporelle de la concentration en particules, en tout point du local considéré. L’estimation précise de cette concentration a fait l’objet du développement de modèles spécifiques de transport et de dépôt d’aérosols dans un local ventilé, dans le cadre d’une thèse cofinancée par l’IRSN et EDF, en collaboration avec l’IMFT. Un formalisme eulérien de glissement est utilisé

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28

Strömgren, Tobias. "Modelling of turbulent gas-particle flow /." Stockholm : Mekanik, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4639.

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29

Gai, Guodong. "Modeling of water sprays effects on premixed hydrogen-air explosion, turbulence and shock waves Modeling pressure loads during a premixed hydrogen combustion in the presence of water spray Numerical study on laminar flame velocity of hydrogen-air combustion under water spray effects Modeling of particle cloud dispersion in compressible gas flows with shock waves A new formulation of a spray dispersion model for particle/droplet-laden flows subjected to shock waves Particles-induced turbulence: a critical review of physical concepts, numerical modelings and experimental investigation A new methodology for modeling turbulence induced 1 by a particle-laden flow using a mechanistic model." Thesis, Normandie, 2020. http://www.theses.fr/2020NORMIR14.

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Cette thèse de doctorat est dédiée au développement de modèles physiques pour l’étude des systèmes d’aspersion de gouttelettes d’eau en milieu réactif d’hydrogène-air pré-mélangée dans les centrales nucléaires. Des modèles d’ordre réduit sont développés pour décrire l’évaporation des gouttelettes d’eau dans la flamme, la dispersion des nuages de particules après le passage des ondes de choc et l’évolution de l’échelle caractéristiques de turbulence avec la présence d’un jet d’eau. Une nouvelle méthodologie est proposée pour évaluer les effets de l’évaporation par l’aspersion sur la propagation

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30

Roveda, Roberto. "A combined discrete velocity particle based numerical approach for continuum/rarefied flows /." Full text (PDF) from UMI/Dissertation Abstracts International, 2000. http://wwwlib.umi.com/cr/utexas/fullcit?p3004370.

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31

Hollis, David. "Particle image velocimetry in gas turbine combustor flow fields." Thesis, Loughborough University, 2004. https://dspace.lboro.ac.uk/2134/7640.

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Current and future legislation demands ever decreasing levels of pollution from gas turbine engines, and with combustor performance playing a critical role in resultant emissions, a need exists to develop a greater appreciation of the fundamental causes of unsteadiness. Particle Image Velocimetry (PIV) provides a platform to enable such investigations. This thesis presents the development of PIV measurement methodologies for highly turbulent flows. An appraisal of these techniques applied to gas turbine combustors is then given, finally allowing a description of the increased understanding of

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32

Forsyth, Peter. "High temperature particle deposition with gas turbine applications." Thesis, University of Oxford, 2017. http://ora.ox.ac.uk/objects/uuid:61556237-feed-43cb-9f4a-d0aed00ca3f8.

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This thesis describes validated improvements in the modelling of micron-sized particle deposition within gas turbine engine secondary air systems. The initial aim of the research was to employ appropriate models of instantaneous turbulent flow behaviour to RANS CFD simulations, allowing the trajectory of solid particulates in the flow to be accurately predicted. Following critical assessment of turbophoretic models, the continuous random walk (CRW) model was chosen to predict instantaneous fluid fluctuating velocities. Particle flow, characterised by non-dimensional deposition velocity and par

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33

Naylor, Michael J. "Fluid flow and particle size in gas atomization for fine powders." Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/47415.

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34

Zhang, Ming. "Optical measurement of ash particle size and velocity in gas-solid flow." Morgantown, W. Va. : [West Virginia University Libraries], 2004. https://etd.wvu.edu/etd/controller.jsp?moduleName=documentdata&jsp%5FetdId=3462.

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Thesis (M.S.)--West Virginia University, 2004.<br>Title from document title page. Document formatted into pages; contains x, 98 p. : ill. (some col.) + 1 video file. Includes a video file (29 sec.). Includes abstract. Includes bibliographical references (p. 91-92).

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35

Woiski, Emanuel Rocha. "Solutions of the kinetic coagulation equation and predictions for gas-particle flow." Thesis, Imperial College London, 1988. http://hdl.handle.net/10044/1/47310.

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36

Mathisen, Anette. "An Experimental and Computational Investigation of Gas/Particle Flow in a Vertical Lifter." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11267.

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Experimental and computational investigations of dilute gas/particle flow in a vertical lifter are performed. The effect of superficial gas velocity, particle density, particle size distribution and particle loading on particle velocities, particle fluctuations and particle cross-moment have been studied experimentally using laser Doppler anemometry (LDA) and particle image velocimetry (PIV). The results from the experimental investigation is compared with the computational investigation using FluentR. The experimental measurements are performed on a lab-scale vertical lifter, consisting of a

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37

Currie, T. D. G. "Application of particle image velocimetry to the investigation of gas dynamic flow in pipes." Thesis, Queen's University Belfast, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.411093.

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38

Schneider, Helfried, Thomas Frank, Klaus Pachler, and Klaus Bernert. "A Numerical Study of the Gas-Particle Flow in Pipework and Flow Splitting Devices of Coal-Fired Power Plant." Universitätsbibliothek Chemnitz, 2002. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-200200348.

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In power plants using large utility coal-fired boilers for generation of electricity the coal is pulverised in coal mills and then it has to be pneumatically transported and distributed to a larger number of burners (e.g. 30-40) circumferentially arranged in several rows around the burning chamber of the boiler. Besides the large pipework flow splitting devices are necessary for distribution of an equal amount of pulverised fuel (PF) to each of the burners. So called trifurcators (without inner fittings or guiding vanes) and ''riffle'' type bifurcators are commonly used to split the gas-coal p

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39

Gomez, Ramirez David. "Heat Transfer and Flow Measurements in an Atmospheric Lean Pre-Mixed Combustor." Diss., Virginia Tech, 2016. http://hdl.handle.net/10919/71812.

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Energy conservation, efficiency, and environmental responsibility are priorities for modern energy technologies. The ever increasing demands for lower pollutants and higher performance have driven the development of low-emission gas turbine engines, operating at lean equivalence ratios and at increasingly higher turbine inlet temperatures. This has placed new constraints on gas turbine combustor design, particularly in regards to the cooling technologies available for the combustor liner walls. To optimize combustor thermal management, and in turn optimize overall engine performance, detailed

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Lucas, William. "Gas flow and star formation in the centre of the Milky Way : investigations with smoothed particle hydrodynamics." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6601.

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The centre of the Milky Way, commonly referred to as the Galactic Centre, is roughly that region within 500 pc of the central black hole, Sagittarius A*. Within the innermost parsec around the supermassive black hole Sagittarius A* are more than a hundred massive young stars whose orbits align to form one or possibly two discs. At about 100 pc is a ring containing more than ten million solar masses of molecular gas which could be the origin of some of the most massive star clusters in the Galaxy. I have performed a number of numerical simulations to help us understand how it is that these stru

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Roclawski, Harald. "PIV Measurements of Channel Flow with Multiple Rib Arrangements." UKnowledge, 2001. http://uknowledge.uky.edu/gradschool_theses/303.

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A model of a gas turbine blade cooling channel equipped with turbulators and a backward facing step geometry was examined. Up to four turbulators oriented cross-stream and inclined 45° to the flow direction were mounted in the channel. The blockage ratio b/H of the turbulators and the height h/H of the backward facing step was 0:125 and 0:14 respectively. The number of turbulators as well as their size was varied. In a preliminary investigation, hot-wire and pressure measurements were taken for three different Reynolds numbers (5,000, 12,000, 18,000)in the center plane of the test section. Sub

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42

Plewacki, Nicholas. "Modeling High Temperature Deposition in Gas Turbines." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587714424017527.

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43

内山, 知実, Tomomi UCHIYAMA, 正章成瀬, Masaaki NARUSE, 吉泰峯村 та Kiyoshi MINEMURA. "渦法による固気二相自由乱流の数値解法 (数値モデルと二次元混合層への適用)". 日本機械学会, 2000. http://hdl.handle.net/2237/9214.

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44

YAGAMI, Hisanori, and Tomomi UCHIYAMA. "Numerical Simulation of Particle-Laden Plane Mixing Layer by Three-Dimensional Vortex Method." The Japan Society of Mechanical Engineers, 2006. http://hdl.handle.net/2237/9219.

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45

Song, Di. "Study of Electrostatic Charging and Particle Wall Fouling in a Pilot-scale Pressurized Gas-Solid Fluidized Bed up to Turbulent Flow Regime." Thesis, Université d'Ottawa / University of Ottawa, 2017. http://hdl.handle.net/10393/36007.

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In gas-solid fluidized beds, the generation of electrostatic charges due to continuous contacts between fluidizing particles, and the particles and the fluidization vessel wall, is unavoidable. Industrial operations, such as the production of polyethylene, are susceptible to significant operational challenges caused by electrostatics including reactor wall fouling, a problem known as “sheeting”. The formation of particle sheets can require shutdown periods for clean-up which results in significant economic losses. To gain a better understanding of the underlying mechanisms of electrostatic cha

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Krishnamurthy, Nagendra. "Investigation of Fouling in Wavy-Fin Exhaust Gas Recirculators." Thesis, Virginia Tech, 2010. http://hdl.handle.net/10919/32012.

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This dissertation presents a detailed account of the study undertaken on the subject of fouling of Exhaust Gas Recirculator (EGR) coolers. The fouling process in EGR coolers is identified to be due to two primary reasons â deposition of fine soot particles and condensation of hydrocarbons known as dry soot and wet soot fouling, respectively. Several numerical simulations are performed to study the fouling process. Preliminary analysis of the particle forces for representative conditions reveal that drag, thermophoresis and Brownian forces are the significant transport mechanisms and among th

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47

Drew, Brady Patterson. "Entrainment Characteristics of Turbulent Round Gas Jets Submerged in Water." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/76852.

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The entrainment process in two-phase buoyant jets differs significantly from their singlephase counterparts, and is not well understood. Entrainment models developed for singlephase flow are often used in two-phase jetting simulations, albeit with limited success. In this work, Particle Image Velocimetry (PIV) and shadowgraph flow visualization experiments have been conducted on submerged round gas jets of varying speeds and nozzle diameters with the goal of improving our understanding of the entrainment process in a two-phase (gas-liquid) jet. The total entrainment estimated using the PIV mea

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48

Ghazi, Christopher. "Measurement of Fluid and Particle Transport through Narrow Passages." ScholarWorks @ UVM, 2014. http://scholarworks.uvm.edu/graddis/297.

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There are many instances where fluid and particles traveling through a narrow passage, such as a crack in a window or door, have large but sometimes unseen effects on our daily lives. For instance, in the cold months of the year a pressure gradient can exists between the inside and outside of a building which causes cold, outdoor air to flow inside through any cracks; significantly decreasing heating efficiency. This inflow of atmospheric air can bring with it dangerous contaminant particles to the inside of a building. Pollution can also occur inside a structure from internal sources of conta

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Filatoff, Nicolas. "Rheologie d'un lit de particules : equations generales et lois de comportement." Paris 6, 1988. http://www.theses.fr/1988PA066678.

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50

Rupp, Jochen. "Acoustic absorption and the unsteady flow associated with circular apertures in a gas turbine environment." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12984.

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Abstract:

This work is concerned with the fluid dynamic processes and the associated loss of acoustic energy produced by circular apertures within noise absorbing perforated walls. Although applicable to a wide range of engineering applications particular emphasis in this work is placed on the use of such features within a gas turbine combustion system. The primary aim for noise absorbers in gas turbine combustion systems is the elimination of thermo-acoustic instabilities, which are characterised by rapidly rising pressure amplitudes which are potentially damaging to the combustion system components. B

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