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Dissertations / Theses on the topic 'Angle flux'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Janeček, Valdislav. "Evaporation à l'échelle microscopique et à haut flux thermique." Paris 6, 2012. http://www.theses.fr/2012PA066512.

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Cette thèse étudie théoriquement les processus de transport au voisinage de la ligne triple de contact liquide-gaz-solide et leur impact sur l'évaporation macroscopique. Dans la première partie de la thèse, l'hydrodynamique au voisinage de la ligne de contact est étudiée sous les conditions de mouillage partiel. L'évaporation induite par le chauffage du substrat dans l'atmosphère de vapeur du même fluide est considérée. La relaxation de la singularité hydrodynamique de la ligne triple est considérée. La principale conclusion de la thèse est que l'effet Kelvin (dépendance de la température de s

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2

Burchfield, Nicole Ashley. "Narrow Angle Radiometer for Oxy-Coal Combustion." BYU ScholarsArchive, 2020. https://scholarsarchive.byu.edu/etd/8423.

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A new method of power production, called pressurized oxy-fuel combustion, burns coal with CO2 and oxygen, rather than air, bringing us closer to the end goal of developing zero emission coal-fired utility boilers. However, high-pressure, high-temperature systems such as these are under-studied, and their behavior is difficult to measure. An accurate model for previously untested conditions requires data for validation. The heat release profile of flames and their radiative intensity is one of the key data sets required for model validation of an oxy-coal combustion system. A radiometer can be

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3

Sugrue, Rosemary M. "The effects of orientation angle, subcooling, heat flux, mass flux, and pressure on bubble growth and detachment in subcooled flow boiling." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/76974.

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Thesis (S.M. and S.B.)--Massachusetts Institute of Technology, Dept. of Nuclear Science and Engineering, 2012.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 119-122).<br>The effects of orientation angle, subcooling, heat flux, mass flux, and pressure on bubble growth and detachment in subcooled flow boiling were studied using a high-speed video camera in conjunction with a two-phase flow loop that can accommodate a wide range of flow conditions. Specifically, orientation angles of 0' (downward-facing horizontal), 30°, 45°, 60°, and 90° (vertical); mass flu

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4

Laver, Mark. "A study of the flux line lattice in superconducting niobium by small angle neutron scattering." Thesis, University of Birmingham, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.487517.

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The flux line lattice (FLL) of Type-II superconductors is a topic of much recent interest. On the one hand, the FLL orientation and shape provide insights into the properties of the underlying superconducting state. On the other hand, the quasi-2D flux line system itself provides a test-bed for theories of structural order in solids and glasses. We use small-angle neutron scattering (SANS) to study FLLs in elemental niobium, a conventional superconductor. Applying the magnetic field along the fourfold [001] direction of pure Nb crystals, we discover surprising new FLL shapes and orientations t

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5

Weinberger, Gottfried, and Yakob Yemane. "Experimental and numerical study of entrainment phenomena in an impinging jet." Thesis, Högskolan i Gävle, Akademin för teknik och miljö, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-8198.

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This thesis is primarily about the mapping and analyze of the phenomenon of an impinging jet by experimental measurements and numerical simulations by CFD. The mapping shows the characteristics of velocity in and around the impinging jet with different conditions. Additional studies were made by analyzing the pressure along the vertical jet axis, but also weight measurements were part of the investigation. The measurements covered the range from 10 m/s, 20 m/s and 30 m/s, which corresponds to a Reynolds number of 17 000, 34 000 and 50 000. The impinging jet is therefore considered to be highly

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6

Kaya, Ebubekir. "Effects Of Off-center Angle On The Heat Transfer Coefficient On Vertical Tier Of Multiple Spherical Surfaces." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605714/index.pdf.

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EFFECTS OF OFF-CENTER ANGLE ON THE HEAT TRANSFER COEFFICIENT ON VERTiCAL TIER OF MULTIPLE SPHERICAL SURFACES Kaya, Ebubekir M.S., Department of Mechanical Engineering Supervisor: Assoc. Prof. Dr. Cemil Yamali December 2004, 112 pages The purpose of this study is to investigate the laminar film condensation phenomenon of steam on a vertical tier of multiple spherical surfaces by using both analytical and experimental methods. The analytical heat transfer results were obtained by following the Nusselt type of analysis and represented graphically. In addition, in order to observe the r

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7

Janecek, Vladislav. "Evaporation à l'échelle microscopique et à haut flux thermique." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2012. http://tel.archives-ouvertes.fr/tel-00782517.

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Cette thèse étudie théoriquement les processus de transport au voisinage de la ligne triple de contact liquide-gaz-solide et leur impact sur l'évaporation macroscopique. Dans la première partie de la thèse, l'hydrodynamique au voisinage de la ligne de contact est étudiée sous les conditions de mouillage partiel. L'évaporation induite par le chauffage du substrat dans l'atmosphère de vapeur du même fluide est considérée. La relaxation de la singularité hydrodynamique de la ligne triple est considérée. La principale conclusion de la thèse est que l'effet Kelvin (dépendance de la température de s

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8

Älfvåg, Hector. "Parametric Study of Separation in Outlet Diffuser of Rocket Nozzle Cooling Channel Rig : The Effect of Heat Flux and Angle of Outlet Diffuser for Rectangular-to-Circular Cross Section Transitions." Thesis, KTH, Farkostteknik och Solidmekanik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299946.

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The use of natural gas with high methane content as rocket fuel has gained substantial industrial attention over the past number of years. Several actors including SpaceX and Blue Origin are developing natural gas powered rocket engines. Attention is also shown from GKN Aerospace, a Sweden-based aerospace engine development company, who together with KTH Royal Institute of Technology has initiated the MERiT project. The project is intended to investigate different aspects of methane powered engines. The project is centered around a physical test rig of a rocket nozzle cooling channel along wit

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9

Ghanbarpourgeravi, Morteza. "Investigation of Thermal Performance of Cylindrical Heatpipes Operated with Nanofluids." Doctoral thesis, KTH, Skolan för industriell teknik och management (ITM), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-202566.

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Nanofluids as an innovative class of heat transfer fluids created by dispersing nanometre-sizedmetallic or non-metallic particles in conventional heat transfer fluids displayed the potential toimprove the thermophysical properties of the heat transfer fluids. The main purpose of this study is toinvestigate the influence of the use of nanofluids on two-phase heat transfer, particularly on thethermal performance of the heat pipes. In the first stage, the properties of the nanofluids were studied,then, these nanofluids were used as the working fluids of the heat pipes. The thermal performance oft

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10

Pavelka, Adam. "Numerické modelování zdrojů světla." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219144.

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The master’s thesis deals with photometry units used in light engineering. There are defined the methods of modelling the illumination systems, their advantages, disadvantages and possibilities of using. Furthermore, the thesis deals with modelling of two illumination systems by ray-tracing in programming environment of MATLAB. The master’s thesis describes the analysis of the problem and the program designing process. Acquired model results are then compared with the real measurements of both illumination systems which allow the discussion of the results and the deviations of the models.

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11

Labaj, Radek. "Vliv smáčecích charakteristik na spolehlivost pájeného spoje." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218775.

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This thesis deals with the methodology of testing the wetting characteristics for different material and process effects in the double-plated base material. Testing is performed by wetting balance method. There is designed procedure to calculate the angles on each side of the non-homogeneous material. The Design of Experiments method is used to interpret the results, by using this method are also interpreted electrical and mechanical properties of solder joints. The correlation with wetting characteristics is discussed.

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12

Da, Re Sara <1996&gt. "The Trauma of Loss in American Fiction about the Spanish Flu." Master's Degree Thesis, Università Ca' Foscari Venezia, 2021. http://hdl.handle.net/10579/19242.

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My thesis deals with the fictional representation of the Spanish Influenza pandemic in the US literature. After illustrating the impact of that pandemic on American culture, as provided by history books, I will take into account significant literary works centered on this theme, drawing on De Paolo’s 2014 book Pandemic Influenza in Fiction – A Critical Study. My thesis will be focused on three works: They Came Like Swallows (1937) by William Maxwell, “Pale Horse, Pale Rider” (1939) by Katherine Anne Porter and The Last Town on Earth (2006) by Thomas Mullen. The choice is not casual: They Came

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13

Chabour, Ferhat. "Commande sans capteur de position d'une machine synchrone à rotor bobiné : application à l'alterno-démarreur séparé StARS." Compiègne, 2007. http://www.theses.fr/2007COMP1705.

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La société Valeo produit pour l'industrie automobile plusieurs machines synchrones destinées à fonctionner en mode démarreur et en mode alternateur. L'une, la StARS, est un alterno-démarreur séparé (ADS) à rotor bobiné et son alimentation est de type pleine onde pilotée par un capteur de position mécanique intégré. La suppression de ce capteur, si rudimentaire soit-il, est un passage très prometteur. Outre la suppression du coût du capteur lui-même et de sa mise en place, la disparition de la connectique qui lui est associée améliore la fiabilité et la robustesse du système. L'objet de cette t

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14

Kombo, Rainah. "Qualitative analysis of flow patterns : two-phase flow condensation at low mass fluxes and different inclination angles." Diss., University of Pretoria, 2016. http://hdl.handle.net/2263/61303.

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A great deal of work has been conducted on in-tube condensation in horizontal and vertical smooth tubes. The available literature points to mechanisms governing two-phase condensation heat transfer coefficients and pressure drops, which are directly linked to the local flow pattern for both horizontal and inclined configurations. However, the work has been limited to flow pattern observations, heat transfer, pressure drops and void fractions for both horizontal and inclined tubes at high mass fluxes. No work has been conducted on the analysis of the observed flow patterns and the effect of tem

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15

Hayashida, Paulo Alexandre Pizara. "Desenvolvimento de uma estratégia de controle de detonação para otimização do torque em um motor de combustão interna flex." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-24092018-074932/.

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O presente trabalho aborda o gerenciamento eletrônico de motores de combustão interna flex, com foco no desenvolvimento de uma estratégia de controle do avanço de ignição em função da ocorrência de combustão anormal conhecida como detonação, para se maximizar o torque de saída do motor. Primeiramente, é desenvolvido um método para a medição da composição de combustível e correção dos parâmetros de tempo de injeção e avanço de ignição, através de um sensor de composição de combustível. Tais parâmetros são definidos através de mapas que trabalham como um sistema de malha aberta. Em seguida, é de

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16

Lima, Milton Macena Ramos de. "Inferência dos ângulos críticos de voo por associação do fluxo óptico com a geometria da cena." Universidade Federal do Amazonas, 2013. http://tede.ufam.edu.br/handle/tede/2914.

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Made available in DSpace on 2015-04-11T14:02:52Z (GMT). No. of bitstreams: 1 milton.pdf: 1235914 bytes, checksum: dff60afa3cc8a29da9cf209d407c7d8f (MD5) Previous issue date: 2013-03-26<br>The three Attitude Parameters or Critical Flight Parameters - Attack, Yaw and Roll - are the angles that describe the rotational movements of an aerial vehicle in three-dimensional space. From the estimate of these angles, we can accomplish the stabilization of flight. The need for it varies for each type of aerial vehicle in inverse proportion to the stability provided by their mechanical characteristi

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17

Mathavakkannan, Suresh. "Techniques to assess volume status and haemodynamic stability in patients on haemodialysis." Thesis, University of Hertfordshire, 2010. http://hdl.handle.net/2299/4811.

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Volume overload is a common feature in patients on haemodialysis (HD). This contributes significantly to the cardiovascular disease burden seen in these patients. Clinical assessments of the volume state are often inaccurate. Techniques such as interdialytic blood pressure, relative blood volume monitoring, bioimpedance are available to improve clinical effectives. However all these techniques exhibit significant shortcomings in their accuracy, reliability and applicability at the bed side. We evaluated the usefulness of a dual compartment monitoring technique using Continuous Segmental Bioimp

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18

Wilson, C. W(Charles William). "Narrow angle features in the cosmic ray flux near 1 TeV." Thesis, 1985. https://eprints.utas.edu.au/22329/1/whole_WilsonCharlesWilliam1985_thesis.pdf.

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19

Hadla, Hazem Radwan. "Predictive Load Angle and Stator Flux Control of SynRM Drives for the Full Speed Range." Doctoral thesis, 2019. http://hdl.handle.net/10316/87350.

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Thesis in the scope of the PhD in Electrical and Computer Engineering, specialization in Energy, presented to the Faculty of Sciences and Technology of the University of Coimbra.<br>Nowadays, several types of electric motors are utilized in industrial applications, namely induction motors (IMs), permanent magnet synchronous motors (PMSMs) and synchronous reluctance motors (SynRMs). Owing to the high cost of PMSMs and due to the rotor losses of IMs, SynRMs can be considered an ideal choice for some applications. These motors have a simple structure, are robust, and have a low cost due to the

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20

Liu, Tzu-Chun, and 劉子群. "Improvement in Permeate Flux by Varying the Angle of Wire Spiral Through Wired Membrane Ultrafiltration Modules." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/67604541784615024120.

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碩士<br>淡江大學<br>化學工程學系<br>90<br>The effect of operating conditions on the permeate flux in a wired ultrafiltration membrane module with the wire angle varied along the path, has been investigated. The analysis of the permeate flux is based on the resistance in series model. Experiments for the ultrafiltration of Dextran T500 aqueous solution were carried out. It was found from both theoretical predictions and experimental results that permeate flux obtained by varying the angle of wire spiral through wired membrane ultrafiltration modules who better than that with fixed angle one.

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21

Huang, Hung-Sen, and 黃泓森. "The Effect of Angle of V-Shaped Channels on the Heat Flux in a Micro Heat Pipe." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/x9h595.

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碩士<br>中原大學<br>機械工程研究所<br>93<br>The present study modifies Cotter’s model for predicting the maximum heat transport capacity and discusses the performance of a single V-shaped microgroove of the Micro heat pipe. A cylindrical coordinate system is used to analyze the correlated between the liquid flow velocity and vapor flow direction, which will affect the behavior of liquid surface and liquid flow velocity, and to obtain the relating volumetric flow-rate in the single microgroove. Then, in order to include the frictional effect of the liquid-vapor interaction into the Cotter’s model, a dimen

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22

Dyson, Thomas Earl. "Effects of hole pitch variation on overall and internal effectiveness in the leading edge region of a simulated turbine blade with heat flux measurements." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-05-1215.

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In this study, the cooling of a simulated blade under increasing pitch between holes was examined. The change in non-dimensional surface temperature, phi, was measured experimentally to quantify this performance loss. This critical quantification of the sensitivity of cooling to pitch between holes has not been studied previously. A range of blowing ratios and angles of attack were tested. Data are presented in terms of the laterally averaged phi, and in terms of the minimum phi, arguably more important from a design perspective. Increasing the pitch 13% produced no measureable change using ei

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23

Pan, Jie. "Towards a Precision Measurement of Parity-Violating e-p Elastic Scattering at Low Momentum Transfer." 2012. http://hdl.handle.net/1993/8124.

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The goal of the Q-weak experiment is to make a measurement of the proton's weak charge ($Q^p_W = 1-4\sin^2\theta_W$) to an accuracy of ~4%. This would represent a ~0.3% determination of the weak mixing angle ($\sin^2\theta_W$) at low energy. The measurement may be used for a precision test of the Standard Model (SM) prediction on the running of $\sin^2\theta_W$ with energy scale. The Q-weak experiment operates at Thomas Jefferson National Accelerator Facility (Jefferson Lab). The experiment determines the proton's weak charge by measuring the parity violating asymmetry in elastic electron-prot

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24

Chou, Ming-Fuei, and 周明煇. "Effects of Combustion Characteristics and Pollution Formations in Flue Gas Recirculation and Plate Angle Under Oil-Boiler." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/79126109381276923133.

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碩士<br>國立中山大學<br>機械工程學系研究所<br>88<br>In this research a modified commercial boiler,which burns diesel oil,is used to study the combustion characterisics and the pollution of the exhausting products under various operating conditions.The controlling ranges of the various experimental parameters include equivalence ratio from 0.8to1.1,swirl number 0 and 0.6, the flue rate of the recirculated flue gas from 0% to 12%, and jet spray angle 80. The effect of the above various operating conditions on the combustion characteristics and the formation of pollutants are studied in this research. A photogra

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25

Hsu, Ming-Chieh, and 徐明杰. "Effects of Swirl Numbers、 Flow Rates of Flue Gas and Jet Spray Angles on Combustion Efficiency and Formation of Pollutants in a Boiler." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/96687759252948192354.

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碩士<br>國立中山大學<br>機械工程學系<br>87<br>In this research a modified commerical boiler, which burns diesel oil, is used to study the combustion characteristics and pollution of the exhausting products under various operating conditions. In our experiments, the oil-burner designs are modified, and the different equivalence ratios and swirl numbers can be controlled by adjusting fuel-air ratio. The controlling rangesof the various experimental parameters include equivalence ratio from 0.8 to 1.1, swirl number from 0 to 1.0, recirculated flue gas from 0 to 12 %, and jet spray angle including45°、60° and 8

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