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Dissertations / Theses on the topic 'Matrix cooling'

Author: Grafiati

Published: 24 June 2021

Last updated: 29 July 2025

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1

Fletcher, Daniel Alden. "Internal cooling of turbine blades : the matrix cooling method." Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.360259.

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2

Majundar, Pradip. "Analysis of desiccant cooling systems using advanced desiccant matrix structure." access full-text online access from Digital Dissertation Consortium, 1986. http://libweb.cityu.edu.hk/cgi-bin/er/db/ddcdiss.pl?8707884.

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3

Lulay, Kenneth Edward. "The effects of cooling on the flow strength of metal matrix composites /." Thesis, Connect to this title online; UW restricted, 1990. http://hdl.handle.net/1773/7037.

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4

Sundberg, Jenny. "Heat Transfer Correlations for Gas Turbine Cooling." Thesis, Linköping University, Department of Mechanical Engineering, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-5446.

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<p>A first part of a ”Heat Transfer Handbook” about correlations for internal cooling of gas turbine vanes and blades has been created. The work is based on the cooling of vanes and blades 1 and 2 on different Siemens Gas Turbines. The cooling methods increase the heat transfer in the cooling channels by increasing the heat transfer coefficient and/or increasing the heat transfer surface area. The penalty paid for the increased heat transfer is higher pressure losses.</p><p>Three cooling methods, called rib turbulated cooling, matrix cooling and impingement cooling were investigated. Rib turbu

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5

Maletzke, Fabian. "Investigation Of The Influence Of Geometrical Parameters On Heat Transfer In Matrix Cooling : A Computational Fluid Dynamics Approach." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-177185.

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Modern gas turbine blades and vanes are operated at temperatures above their material’s melting point. Active external and internal cooling are therefore necessary to reach acceptable lifetimes. One possible internal cooling method is called matrix cooling, where a matrix of intersecting cooling air channels is integrated into a blade or vane. To further increase the efficiency of gas turbines, the amount of cooling air must be reduced. Therefore it is necessary that heat transfer inside a cooling matrix is well understood. In the first part of the thesis, a methodology for estimating heat tra

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6

Baker, Victoria Isabelle. "3D Commutation-Loop Design Methodology for a SiC Based Matrix Converter run in Step-up mode with PCB Aluminum Nitride Cooling Inlay." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104361.

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This work investigates three-dimensional power loop layout for application to a SiC based matrix converter, providing a symmetric, low-inductance solution. The thesis presents various layout types to achieve this design target, and details the implementation of a hybrid layout to the matrix converter phase-leg. This layout is more easily achievable with a surface-mount device package, which also offers benefits such as ease in manufacturing, and a compact package. In order to implement a surface-mount device, a PCB thermal management strategy should be utilized. An evaluation of these methods

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7

Prokš, Jiří. "Zákaznicky upravitelný modul zadní skupinové svítilny s HD rozlišením." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2017. http://www.nusl.cz/ntk/nusl-318409.

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This thesis deals with the design of LED matrix array contains 150 LEDs. In the first part, the thesis identifies source of light like OLED and LED and provide an overview of their lifetime, reliability and basic principle of design systems with LEDs. The thesis then describe design of LED matrix array, deals with power supply of this LED array and with cooling of LED. Finally the thesis describes a software for contol of LED matrix array.

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8

Russo, Florence. "Matériaux multicaloriques : Application à de nouveaux systèmes de refroidissement." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0097/document.

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Le domaine du refroidissement est en constante expansion, le système actuel est basé sur la compression/décompression des fluides. Face aux problèmes environnementaux et économiques que ce système présente (natures des fluides frigorigènes et leurs recyclages, nuisances sonores et vibratoires, réglementations contraignantes), de nouvelles solutions techniques alternatives émergent. Ainsi ce travail de thèse porte sur de nouveaux systèmes de refroidissement basés sur les effets électrocalorique et magnétocalorique, respectivement présents dans des films minces de polymère fluoré et dans des com

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9

Scheffler, Tim Niclas. "Kollisionskühlung in elektrisch geladener granularer Materie - Collisional cooling in electrical charged granular media." Gerhard-Mercator-Universitaet Duisburg, 2001. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-05222001-111655/.

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Particles in granular systems collide inelasticly and kinetic energy is dissipated in the granular system. Granular temperature measures the unordered relative motion of the particles. As a result of the inelastic collisions granular temperature decreases, this process is called collisional cooling. In most cases granular particles are charged. This thesis studies the influence of electrical charges on the collisional cooling by using computer simulations and kinetic theory. It is shown, that electrical charge modifies the dissipation rate by a Boltzmann-factor. The energy barrier of the Boltz

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10

PEREGO, ELIA. "A novel setup for trapping and cooling Barium ions for atom-ion experiments." Doctoral thesis, Politecnico di Torino, 2019. http://hdl.handle.net/11583/2754716.

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11

Lisztwanová, Ewa. "Kompozitní materiály se silikátovou matricí do prostředí vysokých teplot." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265581.

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This thesis deals with the study and design of composite materials based on silica matrix suitable for extreme conditions, eg. for the repair of concrete structures with anticipated increased risk of fire. The theoretical part summarizes basic knowledge concerning the fire resistance of structures and the behavior of the composite system during extreme conditions. Theoretically oriented section also contains information on alkali-activated materials and their use in high temperature environments. Based on the evaluation of the theoretical part of the experiment were designed and tested differe

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12

Pelaccia, Riccardo. "Fabbricazione additiva di inserti per matrici da estrusione con canali di raffreddamento conformi." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2018.

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Nel presente lavoro di tesi sono state affrontate le problematiche della realizzazione di canali di raffreddamento conformi per le matrici di estrusione di profilati in alluminio. In ambito tecnologico il problema termico è molto sentito nel settore, perché nei processi di estrusione a caldo le temperature in gioco e i gradienti termici influenzano sia la riuscita della lavorazione in termini di fattibilità e produttività, sia la durata stessa degli utensili. L’obiettivo di maggiore interesse è di ottenere un raffreddamento mirato delle matrici di estrusione, permettendo di asportare il calor

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13

Patiño, Julieth Caro. "Efeito da anisotropia sobre as propriedades magnetocalóricas de compostos metálicos: um estudo sistemático." Universidade do Estado do Rio de Janeiro, 2014. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=8464.

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O efeito magnetocalórico, i.e., o aquecimento e/ou resfriamento de um material magnético sob variação do campo magnético aplicado é a base da refrigeração magnética.O efeito magnetocalórico é caracterizado pela variação da entropia em um processo isotérmico (O efeito magnetocalórico, i.e., o aquecimento e/ou resfriamento de um material magnético sob variação do campo magnético aplicado é a base da refrigeração magnética. O efeito magnetocalórico é caracterizado pela variação da entropia em um processo isotérmico (ΔSiso) e pela variação da temperatura em um processo adiabático ΔTad.Ap

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14

TARRAMERA, GISBERT ANGEL. "OPTOMECHANICAL COLLECTIVE EFFECTS USING COLD ATOMS IN FREE SPACE: COLLECTIVE ATOMIC RECOIL LASING & OPTICAL BINDING." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/797082.

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This theoretical doctoral thesis investigates the collective effects that emerge in cold atomic systems caused by light-scattering in free space. Two specific cases are investigated: the collective atomic recoil laser (CARL) effect in a cold gas, without optical cavity, and a novel cooperative cooling effect via optical binding (OB) with cold atoms. As a main objective, this theoretical project investigates the spatial grating structures and the backward radiation that appears in a cold atomic cloud when it is irradiated by a single far-detuned laser beam, also known as CARL effect. Wh

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15

Sousa, Vinícius da Silva Ramos de. "O efeito magnetocalórico anisotrópico nos compostos RAl2 (R = Dy, Er, Ho, Nd, Tb)." Universidade do Estado do Rio de Janeiro, 2008. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=817.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>SOUSA, Vinícius da Silva Ramos de. O efeito magnetocalórico anisotrópico nos compostos RAl2 (R = Dy, Er, Ho, Nd e Tb). 2008. 99f. Dissertação (Mestrado em Física) - Instituto de Física Armando Dias Tavares, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, 2008. O efeito magnetocalórico é a base da refrigeração magnética. O potencial magnetocalórico é caracterizado por duas quantidades termodinâmicas: a variação isotérmica da entropia (ΔSiso) e a variação adiabática da temperatura (ΔTad), as quais são

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16

Wolswijk, Louise. "Equilibrium and out-of-equilibrium physics of Bose gases at finite temperature." Doctoral thesis, Università degli studi di Trento, 2022. http://hdl.handle.net/11572/347823.

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The physics of ultracold quantum gases has been the subject of a long-lasting and intense research activity, which started almost a century ago with purely theoretical studies and had a fluorishing experimental development after the implementation of laser and evaporative cooling techniques that led to the first realization of a Bose Einstein condensate (BEC) over 25 years ago. In recent years, a great interest in ultracold atoms has developed for their use as platforms for quantum technologies, given the high degree of control and tunability offered by ultracold atom systems. These features

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17

Behera, Akhilesh. "CFD Analysis of Matrix Cooling Method in Gas Turbine Blades." Thesis, 2015. http://ethesis.nitrkl.ac.in/7583/1/186.pdf.

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Gas turbines are extensively in use for aircraft propulsion, land-based power generations, and various industrial applications. Thermal efficiency and the power output of a gas turbine increases with increase in turbine rotor inlet temperature (RIT). The current RIT level in many advanced gas turbines is far above the melting point of the used blade material. Therefore, along with development in high temperature material, a more sophisticated cooling scheme must be developed for continuing the safe operation of gas turbines with high performances. Gas turbine blades can be cooled internally as

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18

PIEVAROLI, MARCO. "Matrix Cooling Systems for Gas Turbine Nozzles and Blades: Experimental Investigations and Design Correlations." Doctoral thesis, 2014. http://hdl.handle.net/2158/993007.

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In questa tesi sono riportati i risultati sperimentali di varie campagne di misura eseguite sia in condizioni statiche che rotanti su diverse geometrie di tipo matrix per il raffreddamento interno di palettature di turbina a gas. Sono stati quantificati gli effetti della variazione di parametri geometrici caratteristici, numero di Reynolds e Rotation number sulle distribuzioni del coefficiente di scambio termico e del fattore di attrito. A partire dai dati sperimentali sono state ricavate delle correlazioni di design. Queste correlazioni sono state applicate ad un caso reale su un trailing edg

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19

"Simulation studies of the ion cooling processes of MALDI derived ions in fourier-transform mass spectrometry." 2006. http://library.cuhk.edu.hk/record=b5892833.

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Ko Ka Lung.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2006.<br>Includes bibliographical references.<br>Abstracts in English and Chinese.<br>Title page --- p.i<br>Abstract (English) --- p.ii<br>Abstract (Chinese) --- p.iii<br>Acknowledgement --- p.iv<br>Declaration --- p.v<br>Table of Content --- p.vi<br>List of Figure --- p.viii<br>Chapter 1. --- INTRODUCTION --- p.1<br>Chapter 1.1 --- Matrix-assisted Laser Desorption / Ionization (MALDI) --- p.2<br>Chapter 1.1.1 --- Evolution of Matrix-assisted laser desorption / ionization (MALDI) --- p.2<br>Chapter 1.1.1.1 --- Lasers -

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