Дисертації з теми "Particle Heat Transfer"
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Siebert, Annegret Waltraud. "Heat transfer characteristics of mechanically mobilised particle beds." Thesis, Cranfield University, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323829.
Повний текст джерелаBlack, Jennifer May. "Particle motion and heat transfer in rotary drums." Thesis, University of Edinburgh, 1988. http://hdl.handle.net/1842/11987.
Повний текст джерелаKelly, Barry P. "Liquid-particle heat transfer in two phase flow systems." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286853.
Повний текст джерелаLints, Michael C. "Particle-to-wall heat transfer in circulating fluidized beds." Thesis, Massachusetts Institute of Technology, 1992. http://hdl.handle.net/1721.1/13065.
Повний текст джерелаBalasubramaniam, V. M. "Liquid-to-particle convective heat transfer in aseptic processing systems." Connect to resource, 1993. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1145452388.
Повний текст джерелаSistern, M. I. "An investigation into fluid to particle heat transfer and particle mixing in air and water fluidised beds." Thesis, University of Salford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.381700.
Повний текст джерелаMalhotra, Karun. "Particle flow and contact heat transfer characeristics of stirred granular beds." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74233.
Повний текст джерелаOverall mixing maps showing regimes of good and poor solids mixing are presented. Granular solids flowability was found to influence particle flow characteristics substantially within the bulk as well as the wall-to-blade clearance region of the bed. Bulk solids flowability in stirred vessels was characterized by a novel procedure which incorporated the combined effects of particle shape, surface roughness, moisture/stickiness and deformability. The torque required to stir the particulate bed is influenced strongly by the solids flowability and blade configuration.
A physical model for the wall-to-bed contact heat transfer coefficient based on particle renewal rates at the heated surface is proposed. The particle renewal rates and particle-surface contact times are evaluated exclusively from the particle flow information in the clearance region with no empirical parameters. The effects of particle shape and bed porosity at the contacting surface on the surface-to-particle thermal contact resistance were evaluated. Experimental results showing the effects of agitator speed, wall-to-blade clearance, solids flowability and air flow rate on the wall-to-bed average heat transfer rate are presented and discussed. The contact heat transfer model was found to predict the experimentally measured results reasonably well.
He, Long. "Study of Fluid Forces and Heat Transfer on Non-spherical Particles in Assembly Using Particle Resolved Simulation." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/91400.
Повний текст джерелаPh. D.
English, Justin. "HEAT TRANSFER CHARACTERISTICS IN WILDLAND FUELBEDS." UKnowledge, 2014. http://uknowledge.uky.edu/me_etds/52.
Повний текст джерелаAl-Rjoub, Marwan Faisal. "Enhanced Heat Transfer in Micro-Scale Heat Exchangers Using Nano-Particle Laden Electro-osmotic Flow (EOF)." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439305691.
Повний текст джерелаJia, Wenhan Jia. "Simulation of Heat Transfer with Gas-liquid Coexistence Using Dissipative Particle Dynammics." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1471346931.
Повний текст джерелаLeising, Guillaume M. "Radial heat transfer studies in low tube to particle diameter ratio fixed bed reactors." Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-050205-154724/.
Повний текст джерелаMitchell, William James. "Transport phenomena in viscous flow and particle motion in fluidized beds /." Title page, table of contents and abstract only, 1988. http://web4.library.adelaide.edu.au/theses/09ENS/09ensm682.pdf.
Повний текст джерелаZareifard, Mohammad Reza. "Evaluation of fluid-to-particle heat transfer coefficient under tube-flow conditions involving particle motion with relevance to aseptic processing." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/NQ55397.pdf.
Повний текст джерелаNoymer, Peter Daniel. "Heat transfer by particle convection at the wall of a circulating fluidized-bed." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10435.
Повний текст джерелаMort, P. E. "The deposition of sub-micrometer particles from hot turbulent gas to a cold rough surface." Thesis, University of Liverpool, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.385217.
Повний текст джерелаVenkataraman, Manoj. "THE EFFECT OF COLLOIDAL STABILITY ON THE HEAT TRANSFER CHARACTERISTICS OF NANOSILICA DISPERSED FLUIDS." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3656.
Повний текст джерелаM.S.M.S.E.
Department of Mechanical, Materials and Aerospace Engineering;
Engineering and Computer Science
Materials Science and Engineering
Amritkar, Amit Ravindra. "Parallel implementation and application of particle scale heat transfer in the Discrete Element Method." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/51192.
Повний текст джерелаPh. D.
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.
Повний текст джерелаPh. D.
Langrish, Timothy Alan Granville. "The mathematical modelling of cascading rotary dryers." Thesis, University of Oxford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.330063.
Повний текст джерелаNijemeisland, Michiel. "Influences of catalyst particle geometry on fixed bed reactor near-wall heat transfer using CFD." Digital WPI, 2003. https://digitalcommons.wpi.edu/etd-dissertations/445.
Повний текст джерелаEbert, Todd Alan. "An experimental investigation of particle and gas convection heat transfer in a circulating fluidized bed." Thesis, Massachusetts Institute of Technology, 1991. http://hdl.handle.net/1721.1/13833.
Повний текст джерелаHubble, David Owen. "An experimental investigation of the mechanism of heat transfer augmentation by coherent structures." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/26784.
Повний текст джерелаPh. D.
Alhamdan, Abdullah M. "Particle Residence Time Distribution and Bulk Heat Transfer Coefficients of Two-Phase Flow in Scraped Surface Heat Exchanger and Holding Tubes /." The Ohio State University, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487929230742153.
Повний текст джерелаLaurent, Bruno Francois Claude. "Powder flow patterns in a horizontal mixer using positron emission particle tracking." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343274.
Повний текст джерелаTakeyama, Mao. "Convective heat transfer of saturation nucleate boiling induced by single and multi-bubble dynamics." Kyoto University, 2021. http://hdl.handle.net/2433/261621.
Повний текст джерелаGifford, Andrew R. "The Physical Mechanism of Heat Transfer Augmentation in Stagnating Flows Subject to Freestream Turbulence and Related Studies." Diss., Virginia Tech, 2008. http://hdl.handle.net/10919/26097.
Повний текст джерелаPh. D.
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.
Повний текст джерелаPh. D.
Roberts, Graham Trevor. "Shock tube studies of convective heat transfer (a) in non-equilibrium flow (b) in particle-laden flow." Thesis, University of Southampton, 1985. https://eprints.soton.ac.uk/52304/.
Повний текст джерелаVarela, Ballesta Sylvana Verónica. "Computational and experimental modeling of fluid flow and heat transfer processes in complex geometries." Doctoral thesis, Universitat Rovira i Virgili, 2012. http://hdl.handle.net/10803/80717.
Повний текст джерелаThe main objective of this work is the numerical (caffa3d.MB) and experimental (PIV) study of the velocity and temperature fields in complex domains like those encountered in computers or other electronic refrigerated systems with printed circuit board (PCB). Cooling is one of the main challenges these devices have to deal with. Heat removal from the electronic circuit devices has become an important issue to take into account during their design. PCB's are electronic circuits that generate heat by Joule effect and need to be cooled down. They are becoming smaller and therefore some warming problems appear that lowers their efficiency and lifespan. The study of the velocity and temperature fields is closely connected with the analysis of the spatial and temporal evolution of the flow structures found in PCB enclosed cavities and with the understanding of the influence of the geometry, the inlet fluid velocity and plate temperature in the cooling process of the PCB.
Jensen, Colby Bruce. "Bridging the Nano- and Macro-Worlds: Thermal Property Measurement Using Thermal Microscopy and Photothermal Radiometry – Application to Particle-Irradiation Damage Profile in Zirconium Carbide." DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3105.
Повний текст джерелаCalderón, Díaz Alejandro. "Study of solid particle materials as high temperature Thermal Energy Storage and Heat Transfer Fluid for Concentrating Solar Power." Doctoral thesis, Universitat de Barcelona, 2019. http://hdl.handle.net/10803/667863.
Повний текст джерелаPara continuar desarrollando la energía solar de concentración (CSP), se ha propuesto el uso de sólidos particulados. En este nuevo tipo de planta CSP de torre, se utilizan materiales sólidos granulados como Fluido de Transferencia de Calor (HTF) y material para el almacenamiento de energía térmica (TES). El objetivo principal de esta tesis es establecer la relevancia y proporcionar antecedentes, tanto teóricos como experimentales, sobre el uso de sólidos particulados para esta nueva tecnología. Durante este trabajo, la producción científica actual y la relevancia científica fueron estudiados mediante dos estudios bibliométricos, una para CSP y otra para TES. Para ambos análisis, se identificaron los países, regiones, autores, revistas, comunidades de investigación más productivos, el impacto del financiamiento y la cooperación entre países y autores. Para este fin, se utilizaron tres programas informáticos, de los cuales uno tuvo que se desarrollado a la medida. Se realizaron dos análisis del estado del arte para obtener el estado actual de desarrollo de las plantas CSP con uso de sólidos particulados. En el primero, se analizaron varios receptores solares, así como sistemas TES, intercambiadores de calor (HEX) y sistemas de transporte del material granulado. En el segundo, se llevó a cabo un estudio basado en los sólidos particulados, comprendiendo el comportamiento de estos materiales, así como recopilar los materiales potenciales. Se establecieron los criterios de diseño desde la perspectiva de los materiales, logrando encontrar los objetivos relevantes, y la influencia de las propiedades y parámetros de estos materiales. Se realizaron dos estudios sobre la durabilidad en cuanto a la exposición a altas temperaturas. El primero, se centró en analizar el efecto de la temperatura a largo plazo y su efecto en las propiedades ópticas, mecánicas, térmicas y químicas. El segundo, se centró en el efecto de los miles de ciclos térmicos esperados. Se desarrolló un nuevo dispositivo capaz de realizar los ciclos térmicos requeridos en las condiciones requeridas. Se desarrolló e implementó el diseño electrónico, de software y de hardware. Se caracterizaron las mismas propiedades analizadas en el primer estudio.
Farkas, Jon. "An Experimental Study of Formation of Circulation Patterns in Laminar Unsteady Driven Cavity Flows Using Particle Image Velocimeter (PIV) Techniques." ScholarWorks@UNO, 2011. http://scholarworks.uno.edu/td/1359.
Повний текст джерелаRozati, Ali. "Large Eddy Simulation of Leading Edge Film Cooling: Flow Physics, Heat Transfer, and Syngas Ash Deposition." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/30127.
Повний текст джерелаPh. D.
Palaniappan, Sevugan. "Ohmic heating of foods : studies on microbicidal effect of electricity, electrical conductivity of foods, and heat transfer in liquid- particle mixtures /." The Ohio State University, 1991. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487757723995203.
Повний текст джерелаRaymond, Alexander William. "Investigation of microparticle to system level phenomena in thermally activated adsorption heat pumps." Thesis, Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/34682.
Повний текст джерелаMo, Jingwen. "Numerical and Experimental Study of Anisotropic Effective Thermal Conductivity of Particle Beds under Uniaxial Compression." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1288.
Повний текст джерелаWesthoff, Andreas. "Spatial Scaling of Large-Scale Circulations and Heat Transport in Turbulent Mixed Convection." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2012. http://hdl.handle.net/11858/00-1735-0000-000D-FD19-2.
Повний текст джерелаChadil, Mohamed-Amine. "Penalty methods for the simulation of fluid-solid interactions with various assemblies of resolved scale particles." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0205/document.
Повний текст джерелаThe simulations of multiphase flows at real application scale need models for unclosed terms in macroscopic equations. Particle-Resolved Direct Numerical Simulations using Viscous Penalty Method have been carried out to quantify the interactions between particles of different shapes (spheres, ellipsoids) and the carrier fluid at different regimes (from Stokes to inertial). Two methods have been developed to extract hydrodynamic forcesand heat transfers on immersed boundaries representing the particles. Validations have been conducted for various configuration of particles: from an isolated sphere and spheroid to Face-Centered Cubic to a random arrangement of spheres. A correlation of the Nusselt number for an isolated prolate spheroid past by a uniform flow is proposed
Euzenat, Florian. "Simulation numérique directe et analyse des transferts de chaleur dans les lits de particules fixes et mobiles." Phd thesis, Toulouse, INPT, 2017. http://oatao.univ-toulouse.fr/21358/1/EUZENAT_Florian.pdf.
Повний текст джерелаDunand, Pierre. "Étude de l'impact de goutte sur une paroi chaude en régime de Leidenfrost." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0166/document.
Повний текст джерелаThe droplet impact onto a heated wall interaction can be found in mutiples fields, such as internal combustion engines or the steel industry, specially in the thermal treatment of the steel where high energy dissipation rate is required. The study of this interaction should grant a better understanding of this phenomena, and thus, allow the enhancement of these processes and reduce the energy and water consumption. Several studies have already been carried out on this subjet but a great majority of them, whose results present great divergence, only consider the heated wall, neglecting the outgoing of the droplet. This thesis put the emphasis on the liquid phase where currently no data exist to our knowledge, with the help of multiples experimental technics that have been developped. A general experimental setup has been made in order to make all the wanted measurements. The measurement techniques used in this study are first presented, to begin with the planar laser induced fluorescence, which allow us to know the droplet temperature during the impact. Used with an infrared thermography technique coupled with an inverse conduction model, it is possible to extract some important parameter regarding the thermal aspect, such as the droplet heating, the relative evaporation ratio or the cooling efficiency. This latter can be written as the sum of the two major contributions of the cooling: the sensible heat and the evaporation of the droplet. Finally, a high speed shadow imagery technique is presented. It has been developped in order to study the dynamic aspect of the droplet impact. This technique can determine several dynamic parameters such as the droplet speed and diameter, or other parameter regarding the type of impact encountered
Kestel, Matthias. "Numerical modeling of moving carbonaceous particle conversion in hot environments." Doctoral thesis, Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2016. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-204732.
Повний текст джерелаOschmann, Tobias Sebastian [Verfasser], Harald [Akademischer Betreuer] Kruggel-Emden, Harald [Gutachter] Kruggel-Emden, and Viktor [Gutachter] Scherer. "Extension and improvement of the coupled CFD-DEM approach to describe multidimensional heat transfer and non-spherical particle shape for fluidized systems / Tobias Sebastian Oschmann ; Gutachter: Harald Kruggel-Emden, Viktor Scherer ; Betreuer: Harald Kruggel-Emden." Berlin : Technische Universität Berlin, 2019. http://d-nb.info/1184983836/34.
Повний текст джерелаDowd, Cody Stewart. "A Study of Centrifugal Buoyancy and Particulate Deposition in a Two Pass Ribbed Duct for the Internal Cooling Passages of a Turbine Blade." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/81181.
Повний текст джерелаMaster of Science
Alhamdan, Abdullah M. "Experimental studies on natural and forced convection around spherical and mushroom shaped particles." The Ohio State University, 1989. http://rave.ohiolink.edu/etdc/view?acc_num=osu1145369315.
Повний текст джерелаRubenstein, Samuel. "Cold Flow Heat Transfer of Group D Particles in a Fluidized Bed." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1592717365378709.
Повний текст джерелаKrishnamurthy, Nagendra. "A Study of Heat and Mass Transfer in Porous Sorbent Particles." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/64412.
Повний текст джерелаPh. D.
Oliveira, Filho Ulisses Corr?a de. "Desenvolvimento de um secador spray para obten??o de p?s finos de precursores de ni?bio." Universidade Federal do Rio Grande do Norte, 2007. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15874.
Повний текст джерелаThis work presents a spray-dryer designed to oxalate-niobate precursors and suitable for the production of Niobium Carbide. The dryer was intended to produce powders of controlled particle size. First, the precursor is dissolved in water to produce a solution of known concentration and then it is atomized on the spray-dryer to produce the powder. This equipment consists of a 304 stainless steel chamber, 0.48 m x 1.9 m (diameter x length), with a conical shape at the lower portion, which is assembled on a vertical platform. The chamber is heated by three 4 kW electrical resistances. In this process, drying air is heated as it flows inside a serpentine surrounding the chamber, in contrary to more traditional processes in which the hot drying air is used to heat the component. The air enters the chamber at the same temperature of the chamber, thus avoiding adherence of particles on the internal surface. The low speed flow is concurrent, directed from the top to the bottom portion of the chamber. Powders are deposited on a 0.4 m diameter tray, which separates the cylindrical portion from the conical portion of the chamber. The humid air is discharged though a plug placed underneath the collecting tray. A factorial experimental planning was prepared to study the influence of five parameters (concentration, input flow, operation temperature, drying air flow and spray air flow) on the characteristics of the powders produced. Particle size distribution and shape were measured by laser granulometry and scanning electronic microscopy. Then, the powders are submitted to reaction in a CH4 / H2 atmosphere to compare the characteristics of spray-dried powders with powders synthetizided by conventional methods
O presente trabalho consiste em projetar e construir um secador spray com a finalidade de secar precursores do tipo oxalato-niobato de am?nia para obten??o de p?s com granulometria controlada e adequados ? produ??o de carbetos de Ni?bio policristalino. Este precursor ? atualmente obtido com granulometria dispersa, e morfologia n?o uniforme. A secagem em spray pode uniformizar as propriedades de materiais que s?o dissolvidos em ?gua, gerando uma solu??o de concentra??o conhecida que ? ent?o, atomizada no secador spray visando ? obten??o do material na forma de p?. O secador ? constitu?do por uma c?mara de secagem em a?o inox 304 medindo 0,48 m de di?metro por 1,90 m de comprimento, montado em uma plataforma vertical e com formato tronco c?nico na sua parte inferior. A c?mara ? aquecida por tr?s cintas de resist?ncias eletricas com pot?ncia total de 4 kW e o ar ? aquecido ao passar por serpentinas constru?das ao redor da c?mara de secagem. O sistema foi projetado de maneira n?o convencional tendo como objetivo principal a produ??o de p?s de precursores com granulometria fina e com uma boa distribui??o do tamanho das part?culas. Foi realizado um planejamento fatorial experimental visando ? an?lise da influ?ncia de cinco par?metros (concentra??o, vaz?o da alimenta??o, temperatura de opera??o, vaz?o do ar de secagem e vaz?o do ar do atomizador) sobre as caracter?sticas dos p?s obtidos usando-se solu??es de bicarbonato de s?dio. As Caracter?sticas f?sicas foram avaliadas a partir de an?lise de ?rea superficial, DRX, tamanho e forma das part?culas, granulometria a laser e microscopia eletr?nica de varredura. Em seguida foi realizada a secagem do precursor e, os p?s obtidos foram submetidos a rea??es com CH4 / H2 com o objetivo de comparar as caracter?sticas dos p?s oriundos do secador spray e aqueles que n?o tiveram esse tratamento. Os resultados mostraram que o equipamento produziu part?culas de bicarbonato de s?dio com di?metros m?dios de 2,4 a 52,4 μm, conforme as temperatura e vaz?es de alimenta??o, e se mostrou capaz de secar precursores do tipo oxalato-niobato de am?nia sem perda de suas caracter?sticas
Benoit, Hadrien. "Récepteur solaire tubulaire à suspension dense de particules en écoulement ascendant." Thesis, Perpignan, 2015. http://www.theses.fr/2015PERP0045/document.
Повний текст джерелаThis thesis, financed in the frame of the CSP2 European project, concerns the study of a new kind of thermal concentrating solar receiver using a dense suspension of solid particles circulating upward in vertical tubes. The suspension is obtained by fluidizing Geldart A-type particles. The principle consists in creating an upward flow of the suspension in a vertical tube exposed to the concentrated solar radiation that heats the tube wall. The heat is then transmitted to the particles circulating inside that transport it to a conversion cycle for electricity production. Contrarily to usual solar heat transfer fluids, particles can reach high temperatures (> 700 °C) that permit to power high efficiency thermodynamic cycles such as Brayton or combined cycles. Moreover they can be used as a direct heat storage medium for continuous electricity production. During this thesis, a one-tube solar receiver was successfully tested at the PROMES-CNRS solar furnace in Odeillo, with particle outlet temperatures of 750 °C reached. The first values of wall-to-suspension heat transfer coefficient were calculated and a Nusselt correlation was determined. A specific flow pattern with a particle downward flux close to the wall and upward flux in the tube center was underlined. The flow hydrodynamics and the heat transfer mechanisms were studied thanks to 3D numerical simulations. A 16-tube 150 kWth receiver was finally tested and modeled, proving the process applicability at larger scale
Zitoun, Khaled Bechir. "Convective heat transfer coefficients between fluid and cubic particles in continuous tube flow." The Ohio State University, 1992. http://rave.ohiolink.edu/etdc/view?acc_num=osu1300992767.
Повний текст джерела