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Dissertations / Theses on the topic 'High pressure soot formation'

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Published: 4 June 2021

Last updated: 13 February 2022

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1

Demosthenous, Alexis. "Soot formation and oxidation in a high-pressure spray flame." Thesis, Queen Mary, University of London, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424461.

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2

Tanke, Dietmar. "Rußbildung in der Kohlenwasserstoffpyrolyse hinter Stoßwellen." Doctoral thesis, Niedersächsische Staats- und Universitätsbibliothek Göttingen, 1995. http://hdl.handle.net/11858/00-1735-0000-0022-6010-E.

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Die Rußbildung in der Pyrolyse von n-Hexan, Benzol und Kohlenwasserstoffen im Stoßrohr wird mit hoher Zeitauflösung absorptionsspektroskopisch beobachtet und Gasproben durch ein besonders schnelles Ventil gesammelt. Vom Beginn der Pyrolyse bis zum Einsetzen der Rußbildung wurde stets eine Induktionszeit beobachtet, deren Dauer von der Temperatur, der Kohlenstoffkonzentration und der Struktur des pyrolysierten Kohlenwasserstoffs abhängt. Dieser Zusammenhang wird mit einem Arrhenius-Ansatz beschrieben. Der Vorfaktor A ist für Aromaten eine Größenordnung kleiner als für Alkane. Die scheinbare

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3

Iskander, Adel Maurice. "Effect of pressure on soot formation in laminar diffusion flames /." The Ohio State University, 1987. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487324944215767.

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4

Hofmann, Arnulf Maximilian. "Laser-induced incandescence for soot diagnostics at high pressure." [S.l. : s.n.], 2006. http://nbn-resolving.de/urn:nbn:de:bsz:16-opus-70340.

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5

Young, K. J. "Soot formation in turbulent vaporised kerosine/air jet flames at elevated pressure." Thesis, Cranfield University, 1993. http://dspace.lib.cranfield.ac.uk/handle/1826/8569.

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The objective of this thesis is to develop and validate a model of soot formation which is capable of being applied to a computational fluid dynamic (CFD) simulation of gas turbine combustion. The work follows previous research by Moss and Co-workers (Moss et al.1987, Syed 1990, Stewart et al.1991) The concept of the study is to generate a detailed set of experimental data in turbulent flames of kerosine in which the complicating factors of gas turbine combustion - that is 3D geometry and droplet combustion - are removed. This allows more confidence in the computational simulation of the flame

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6

McCrain, Laura L. "The Effect of Elevated Pressure on Soot Formation in a Laminar Jet Diffusion Flame." NCSU, 2003. http://www.lib.ncsu.edu/theses/available/etd-07172003-200058/.

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Soot volume fraction (f<sub>sv</sub>) is measured quantitatively in a laminar diffusion flame at elevated pressures up to 25 atmospheres as a function of fuel type in order to gain a better understanding of the effects of pressure on the soot formation process. Methane and ethylene are used as fuels; methane is chosen since it is the simplest hydrocarbon while ethylene represents a larger hydrocarbon with a higher propensity to soot. Soot continues to be of interest because it is a sensitive indicator of the interactions between combustion chemistry and fluid mechanics and a known pollutant. T

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7

Sivalingham, Giriharan. "Soot particulate formation in a confined diesel fuel spray-flame at elevated pressure : an experimental and image-based study." Thesis, Queen Mary, University of London, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246740.

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8

Shurtz, Randy C. "Effects of Pressure on the Properties of Coal Char Under Gasification Conditions at High Initial Heating Rates." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2877.

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The effects of elevated pressure and high heating rates on coal pyrolysis and gasification were investigated. A high-pressure flat-flame burner (HPFFB) was designed and built to conduct these studies. The HPFFB was designed to provide an environment with laminar, dispersed entrained flow, with particle heating rates of ~10^5 K/s, pressures of up to 15 atm, and gas temperatures of up to 2000 K. Residence times were varied from 30 to 700 ms in this study. Pyrolysis experiments were conducted at particle heating rates of ~10^5 K/s and maximum gas temperatures of ~1700 K at pressures of 1 to 15 at

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9

Liu, Kun. "Miscibility, Viscosity, Density, and Formation of Polymers in High-Pressure Dense Fluids." Diss., Virginia Tech, 2007. http://hdl.handle.net/10919/29787.

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This thesis is an experimental investigation of the phase behavior, volumetric properties, and viscosity of poly (methyl methacrylate) (PMMA), poly (Îµ-caprolactone) (PCL) and their blends. Homopolymerization and copolymerizations of methyl methacrylate (MMA) and 2-methylene-1,3-dioxepane (MDO) in mixtures of acetone + CO2 have also been explored. The viscosities and densities of acetone + CO2 mixtures were measured in the temperature range 323-398 K at pressures up to 35 MPa. This is the first study in which viscosity of acetone + CO2 mixtures have been measured and the mixtures have been eva

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10

Zhu, Guo-Qiang. "Modeling of plasma dynamics and pattern formation during high pressure microwave breakdown in air." Phd thesis, Université Paul Sabatier - Toulouse III, 2012. http://tel.archives-ouvertes.fr/tel-00668934.

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Dans cette thèse, un modèle de la dynamique du plasma après un claquage microonde dans l'air à pression atmosphérique a été développé. Ce modèle a permis d'expliquer pour la première fois la formation et la dynamique de structures filamentaires auto-organisées lors du claquage microonde. Le claquage microonde dans l'air à pression atmosphérique a été récemment observé au MIT dans des expériences mettant en oeuvre une source microonde de puissance et des caméras rapides. Les mesures montrent que, lors du claquage, un ensemble structuré de filaments de plasma se forme et se dirige vers la source

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11

Yang, Guoqiang. "Bubble formation dynamics and transport phenomena in high pressure bubble columns and slurry bubble columns /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486474078051133.

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12

AZEVEDO, CECILIA TOLEDO DE. "FRACTURE PARAMETERS ESTIMATION THROUGH THE ANALYSIS OF THE PRESSURE CURVE DURING FRACTURING OF HIGH PERMEABILITY FORMATION." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2011. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=34622@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>Valkó e Oligney propuseram um modelo que estima a evolução da fratura utilizando uma interpretação direta da curva de pressão de fundo medida durante uma operação de fracpack. Os únicos dados de entrada necessários para a aplicação do modelo são os registros geralmente disponíveis durante e após a operação. Considerando uma fratura de geometria radial e utilizando equações simples de fluxo e de geomecânica, o modelo obtém raios de empacotamen

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13

Pan, Yi. "Formation of Superhexagonal Chromium Hydride by Exposure of Chromium Thin Film to High Temperature, High Pressure Hydrogen in a Ballistic Compressor." PDXScholar, 1991. https://pdxscholar.library.pdx.edu/open_access_etds/1243.

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The interaction of hydrogen with metals has great environmental significance in problems ranging from the catastrophic failure of materials due to hydrogen embrittlement to safe and efficient storage of hydrogen as a metal hydride. Chromium (Cr) is widely used as an alloying agent to produce materials such as stainless steel and as an electroplated coating on materials to prevent corrosion and to minimize wear. Hydrogen which co-deposits with chromium during electroplating forms hexagonal close packed CrH or face centered cubic CrH2 which cracks the deposit. The behavior of hydrogen in Cr, esp

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14

Law, Madeleine. "Investigations on the Formation of Defect Bands in Semi-Solid High Pressure Die Cast Aluminium-Silicon Alloys." Licentiate thesis, KTH, Materialvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-272086.

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High-pressure die casting of semi-solid aluminium-silicon alloys is used in the automotive industry to manufacture components, like housings, brackets, and bars. It is commonly known that during high-pressure die casting, defect bands may be created that follow the contour of the component surface. These bands consist mainly of a eutectic phase. This phenomenon is also observed in semi-solid metal slurry high-pressure die casting. These bands could lead to premature failure of the component in service. The origin of these bands is not fully understood and so this research focuses on investigat

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15

Iwagoshi, Thawi. "Influence of oxygen partial pressure on the crystal growth and texture formation of some high-tc superconductors /." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu148794150429637.

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16

Yu, Pui-ling, and 余佩玲. "Strong ram-pressure stripping and widespread star formation in the high-velocity system towards the center of the Perseus cluster." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2015. http://hdl.handle.net/10722/211150.

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I present spectroscopic imaging of the high-velocity system (HVS) towards the central cD galaxy (NGC 1275) in the Perseus Cluster at a high spectral resolution for the first time. Previous observation suggests that the HVS is a highly inclined dusty and gas-rich galaxy moving towards the center of NGC 1275 at a high speed of 3000 km/s relative to the systemic velocity of NGC 1275 through the hot intracluster medium (ICM). If this is the case, then the HVS should be undergoing intense ram-pressure stripping. However, there is tentative evidence for ram-pressure stripping in the HVS, and further

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17

Espinosa, Pesqueira Diana Maricela. "Effect of high hydrostatic pressure processing on biogenic amines formation in artisan caprine and ovine raw milk cheeses." Doctoral thesis, Universitat Autònoma de Barcelona, 2012. http://hdl.handle.net/10803/83971.

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El objetivo comprendido en esta tesis doctoral fue evaluar el efecto de la aplicación de la Alta Presión Hidrostática (APH) en la formación de Aminas Biogenas (AB) en quesos elaborados a partir de leche cruda. Para este propósito fue necesaria la participación de dos queserías artesanas como proveedoras de las dos variedades de queso elaboradas a partir de leche cruda utilizadas en este estudio, una de leche de oveja y otra de de leche de cabra. La visita a cada una de las queserías se realizó previamente con el fin de conocer las instalaciones, las condiciones de elaboración de los quesos y e

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18

Boff, Jeffrey M. "Study of volatile compound formation in oxidized lipids and volatile compound retention in processed orange juice." The Ohio State University, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=osu1054660479.

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19

Gohari, Darabkhani Hamid. "Experimental investigations on sooty flames at elevated pressures." Thesis, University of Manchester, 2010. https://www.research.manchester.ac.uk/portal/en/theses/experimental-investigations-on-sooty-flames-at-elevated-pressures(36655740-7ea3-4a91-a2ce-4357902fd71b).html.

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This study addresses the influence of elevated pressures, fuel type, fuel flow rate and co-flow air on the flame structure and flickering behaviour of laminar oscillating diffusion flames. Photomultipliers, high speed photography and schlieren, accompanied with digital image processing techniques have been used to study the flame dynamics. Furthermore, the effects of pressure on the flame geometry and two-dimensional soot temperature distribution in a laminar stable diffusion flame have been investigated, utilising narrow band photography and two-colour pyrometry technique in the near infra-re

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20

Kolesnikov, Anton. "Experimental investigation of hydrocarbon formation and transformation under Earth´s upper mantle conditions." Doctoral thesis, KTH, Kraft- och värmeteknologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-27017.

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The theory of the abyssal abiotic petroleum origin considers oil and natural gas to begenerated in the Earth’s upper mantle. Hydrocarbons migrate further through the deep faults into the Earth’s crust, where they can form oil and gas deposits in any kind of rock in any kind of structural position. Until recently one of the main obstacles for further development of this theory has been the lack of the data covering processes of generation and transformations of hydrocarbons. Experimental data, presented in this thesis, confirms the possibility of hydrocarbons formation from mantle inorganic com

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21

Borchardt, Lars, Winfried Nickel, Mirian Casco, et al. "Illuminating solid gas storage in confined spaces – methane hydrate formation in porous model carbons." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-221847.

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Methane hydrate nucleation and growth in porous model carbon materials illuminates the way towards the design of an optimized solid-based methane storage technology. High-pressure methane adsorption studies on pre-humidified carbons with well-defined and uniform porosity show that methane hydrate formation in confined nanospace can take place at relatively low pressures, even below 3 MPa CH4, depending on the pore size and the adsorption temperature. The methane hydrate nucleation and growth is highly promoted at temperatures below the water freezing point, due to the lower activation energy i

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22

Borchardt, Lars, Winfried Nickel, Mirian Casco, et al. "Illuminating solid gas storage in confined spaces – methane hydrate formation in porous model carbons." Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30232.

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Methane hydrate nucleation and growth in porous model carbon materials illuminates the way towards the design of an optimized solid-based methane storage technology. High-pressure methane adsorption studies on pre-humidified carbons with well-defined and uniform porosity show that methane hydrate formation in confined nanospace can take place at relatively low pressures, even below 3 MPa CH4, depending on the pore size and the adsorption temperature. The methane hydrate nucleation and growth is highly promoted at temperatures below the water freezing point, due to the lower activation energy i

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23

Nguyen, Van Phuc. "Étude expérimentale et modélisation des interactions entre H2S et les hydrocarbures. Formation de composés organo-soufrés et effets cinétiques en gisement." Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0292/document.

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H2S peut être un gaz dominant dans les réservoirs pétroliers carbonatés. Cependant, les recherches sur l'influence de H2S sur la composition et la stabilité thermique du pétrole restent limitées. Dans cette thèse, les interactions entre les hydrocarbures et H2S ont été étudiées de 310 à 350°C, à 700 bar, par pyrolyse confinée en tubes d'or scellés. La pyrolyse d'une huile non soufrée en présence de H2S ont permis de mettre en évidence une nouvelle voie de formation des composés organiques soufrés dans les pétroles. Les pyrolyses des mélanges n-octane/H2S et alkylbenzène/H2S ont permis de propo

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24

Alkelae, Fathia. "Etude en fretting usure sous hautes températures d'un contact Waspaloy/René125 : formation et stabilité des "glaze layers"." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC015/document.

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Les alliages à base de Nickel constituent les meilleurs matériaux actuellement développés pour répondre aux sollicitations sous hautes températures dans les domaines de l’aéronautique du nucléaire etc… L’objectif de ce travail de thèse est d’étudier leur comportement en température sous sollicitations de fretting usure. Dans cette étude, on s’intéresse à un contact René125/Waspaloy représentatif d’une application aéronautique. Dans un premier temps nous avons étudié l’effet de la température. On montre qu’à partir de 400°C, l’interface génère la formation d’une glaze layer lubrifiante qui rédu

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25

Molet, Julien. "Formation des oxydes d'azote dans les flammes haute pression : étude expérimentale par fluorescence induite par laser : application aux flammes méthane/air et méthane/hydrogène/air." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2066/document.

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Le monoxyde d’azote (NO) est un polluant atmosphérique responsable d’effets nuisibles sur l’environnement et la santé. Afin de mieux contrôler ces émissions, il est indispensable de comprendre et de maîtriser leur formation,en particulier lors de la combustion à haute pression, domaine d’application industrielle (cas des turbines à gaz,des moteurs…). On distingue quatre voies principales de formation de NO : la voie thermique, la voie du NO précoce, la voie NNH et la voie N2O. L’objectif de cette thèse à caractère expérimentale est de compléter la base de données expérimentale déjà existante n

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Parakala, Shilpha R. "EIS Investigation of Carbon Dioxide and Hydrogen Sulfide Corrosion Under Film Forming Conditions." Ohio University / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1125871582.

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27

Laniel, Dominique. "Synthèse de polymères d'azote par pression comme matériaux énergétiques du futur." Electronic Thesis or Diss., Sorbonne université, 2018. http://www.theses.fr/2018SORUS472.

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L’objectif de cette thèse doctorale fut la synthèse de composés polyazotés qui serviraient comme matériaux énergétiques du futur. Afin d’y arriver, les propriétés physico-chimiques de l’azote pur ainsi que des mélanges binaires xénon-azote, hydrogène-azote ainsi que lithium-azote furent étudiés à des pressions et températures extrêmes. Lors de la compression de l’azote pur jusqu’à environ 250 GPa et chauffé à 3300 K, une nouvelle forme d’azote polymérique constituée d’anneaux N6 interconnectés fut obtenue. À basse pression, les études du mélange Xe-N2 permirent de découvrir un composé de van d

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Karakaya, Guray. "A Study To Determine The Cement Slurry Behaviour To Prevent Fluid Migration." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612736/index.pdf.

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Fluid migration behind the cased holes is an important problem for oil and gas industry both considering short terms and long terms after cementing operation. For many reasons like high formation pressures, high shrinkage rate of cement slurry while setting, lack of mechanical seal, channeling due to cement slurry setting profile, hydrocarbon migration may occur and lead expensive recompletion operations and sometimes abandonment. Solutions to this problem vary including high density-low fluid loss cement slurry or right angle cement setting profile. During this study, the effect of &ldquo<br>

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29

Schöneich, Michael. "In situ Charakterisierung der Phasenbildung — Konzept und Anwendung der Analyse von Festkörper-Gas-Reaktionen durch Gesamtdruckmessungen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-108124.

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In der vorliegenden Arbeit wird das Konzept einer druckbasierten Analyse von Fest-Gas-Gleichgewichten hinsichtlich theoretischer wie experimenteller Zusammenhänge untersucht. Hierfür erfolgt eine gezielte Nutzung der Beziehungen von theoretischen und experimentell zugänglichen physikalischen Parametern, um so die Grundlage für eine spätere Anwendung im Kontext der Syntheseplanung zu ermöglichen. Im Speziellen handelt es sich im vorgestellten Konzept um die aus festkörperanalytischer Sicht häufig vernachlässigte Beziehung zwischen dem Dampfdruck von Festkörpern und dem chemischen Potenzial. Ne

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Huang, Dongyang. "Experimental and Theoretical Investigation of Core-Mantle Interations." Thesis, Université de Paris (2019-....), 2019. https://theses.md.univ-paris-diderot.fr/HUANG_Dongyang_va2.pdf.

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La formation du noyau sur Terre se produit par différenciation métal-silicate dans un océan magmatique. Ce processus d'équilibrage permet d'éliminer les éléments sidérophiles du manteau jusqu'au noyau, en fixant la composition en éléments traces des deux réservoirs. Des expériences de cloisonnement métal-silicate à haute pression et à haute température peuvent être utilisées pour faire correspondre les abondances observées et, comme le cloisonnement des éléments est fonction de P, T, fO2 et de la composition, elles limitent davantage les conditions thermochimiques de la formation du noyau. Dan

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Abdelgadir, Ahmed Gamaleldin. "Numerical Investigation of Soot Formation in Non-premixed Flames." Diss., 2017. http://hdl.handle.net/10754/625044.

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Soot is a carbon particulate formed as a result of the combustion of fossil fuels. Due to the health hazard posed by the carbon particulate, government agencies have applied strict regulations to control soot emissions from road vehicles, airplanes, and industrial plants. Thus, understanding soot formation and evolution is critical. Practical combustion devices operate at high pressure and in the turbulent regime. Elevated pressures and turbulence on soot formation significantly and fundamental understanding of these complex interactions is still poor. In this study, the effects of pressure an

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(6598352), Rufat Kulakhmetov. "MEASUREMENT AND MODELING OF SOOT FORMATION AND DEPOSITION IN FUEL RICH HIGH PRESSURE KEROSENE COMBUSTION." Thesis, 2020.

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<p>Combustion of kerosene propellants often deposits soot on chamber walls. These deposits act as a thermal barrier and can significantly affect the analysis of cooling systems. This is especially vital for reusable engines since the accumulated soot deposit can make the wall heat flux vary between every firing. This dissertation discusses a computational and experimental effort to understand the main drivers of these soot deposits. The computational approach employs the Method of Moments with Interpolative Closure (MOMIC) model to predict soot particle dynamics; Brownian and thermophoretic di

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Eaves, Nickolas. "The Effect of Pressure and Conjugate Heat Transfer on Soot Formation Modelling." Thesis, 2012. http://hdl.handle.net/1807/33408.

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The first goal of this thesis is to validate a detailed co-flow flame soot formation model for high pressure applications. The second goal is to use this detailed model to understand the effect pressure has on soot formation. The third goal is to note any deficiencies in the model, and the fourth is to remedy these issues. The thesis is divided into two research studies. The first study validates the model for high pressure use against ethane-air co-flow diffusion flames from 2 to 15 atm. After validation, the results are used to determine the impact pressure has on the three main soot formati

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Vaillancourt, Marie Emma. "High pressure soot formation in non-smoking methane-air laminar diffusion flames from 1.5 MPa to 6.0 MPa." 2006. http://link.library.utoronto.ca/eir/EIRdetail.cfm?Resources__ID=450290&T=F.

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Joo, Hyun Il. "Soot Formation in Non-premixed Laminar Flames at Subcritical and Supercritical Pressures." Thesis, 2010. http://hdl.handle.net/1807/24775.

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An experimental study was conducted using axisymmetric co-flow laminar diffusion flames of methane-air, methane-oxygen and ethylene-air to examine the effect of pressure on soot formation and the structure of the temperature field. A liquid fuel burner was designed and built to observe the sooting behavior of methanol-air and n-heptane-air laminar diffusion flames at elevated pressures up to 50 atm. A non-intrusive, line-of-sight spectral soot emission (SSE) diagnostic technique was used to determine the temperature and the soot volume fraction of methane-air flames up to 60 atm, methane-oxyge

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Bennett, Anthony. "Fundamental Studies of Soot Formation and Diagnostic Development in Nonpremixed Combustion Environments." Diss., 2020. http://hdl.handle.net/10754/664378.

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Abstract: Soot from combustion emissions has a negative impact on human health and the environment. Understanding and controlling soot formation is desirable to reduce this negative impact, especially as energy demands continue to increase. In this work, a range of fundamental combustion experiments are performed to better understand the soot formation process, and to develop diagnostics for measuring soot properties. First, studies on the effects of doping the flame with different polycyclic aromatic hydrocarbons (PAHs) was performed to investigate soot nucleation mechanisms. Soot formati

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Barua, Arup. "Soot Formation in Diffusion Flames of Alternative Turbine Fuels at Elevated Pressures." Thesis, 2012. http://hdl.handle.net/1807/33333.

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Laminar axisymmetric syngas-air, syngas-methane mixture-air and biogas-air diffusion fames were studied over the pressure range of 5 to 20 atm to investigate the effect of pressure and dilution on soot formation. Spectral soot emission (SSE) optical diagnostic technique was used to measure the soot volume fraction and soot temperature in these flames. The fuel matrix consisted of three syngas fuels, two syngas-methane mixtures and two biogas fuels. In general, soot formation in syngas-methane mixtures and biogas diffusion flames showed strong pressure dependence at lower pressures but this de

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Charest, Marc Robert Joseph. "Numerical Modelling of Sooting Laminar Diffusion Flames at Elevated Pressures and Microgravity." Thesis, 2011. http://hdl.handle.net/1807/29922.

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Fully understanding soot formation in flames is critical to the development of practical combustion devices, which typically operate at high pressures, and fire suppression systems in space. Flames display significant changes under microgravity and high-pressure conditions as compared to normal-gravity flames at atmospheric pressure, but the exact causes of these changes are not well-characterized. As such, the effects of gravity and pressure on the stability characteristics and sooting behavior of laminar coflow diffusion flames were investigated. To study these effects, a new highly-scala

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Cormier, Daniel. "Laser-induced Incandescence of Soot for High Pressure Combustion Diagnostics." Thesis, 2011. http://hdl.handle.net/1807/30562.

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Accurate determination of soot emissions from combustion is of interest in both fundamental research and industries that rely on combustion. Laser-induced incandescence of soot particles is a young technique that allows unobtrusive measurements of both soot volume fraction and particulate size. An apparatus utilizing this technique has been brought to function for both atmospheric and high pressure measurements. Proof of concept measurements of an atmospheric ethylene-air laminar diffusion flame at 35, 42, and 47 mm above the burner exit correlate well with literature findings. Profile trends

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Ghasemi, Sanaz. "Laser-induced Incandescence of Soot at High Pressures." Thesis, 2012. http://hdl.handle.net/1807/33214.

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Measurements of soot emission properties are of interest in both fundamental research and combustion-based industries. Laser-induced incandescence of soot particles is a novel technique that allows unobtrusive measurements of both soot volume fraction and particulate size with significant advantages. An apparatus utilizing this technique has been customized and used to provide measurements of soot concentration and particle sizing of a laminar, diffusion methane/air flame at pressures of 10, 20 and 40 atm at 6~mm above the burner. Soot volume fraction measurements correlate well with literatur

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Intasopa, Gorngrit. "Soot Measurements in High-pressure Diffusion Flames of Gaseous and Liquid Fuels." Thesis, 2011. http://hdl.handle.net/1807/27342.

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Methane-air, ethane-air, and n-heptane-air over-ventilated co-flow laminar diffusion flames were studied up to pressures of 2.03, 1.52, and 0.51 MPa, respectively, to determine the effect of pressure on flame shape, soot concentration, and temperature. A spectral soot emission optical diagnostic method was used to obtain the spatially resolved soot formation and temperature data. In all cases, soot formation was enhanced by pressure, but the pressure sensitivity decreased as pressure was increased. The maximum fuel carbon conversion to soot, ηmax, was approximated by a power law dependence wit

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Zhang, Zhen Zhong, and 張振忠. "Gel formation and quality characteristics of high methoxy pectin under hydrostatic pressure." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/17320690389291865425.

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Hofmann, Arnulf Maximilian [Verfasser]. "Laserinduzierte Inkandeszenz für die Rußdiagnostik bei erhöhtem Druck = Laser-induced incandescence for soot diagnostics at high pressure / vorgelegt von Arnulf Maximilian Hofmann." 2006. http://d-nb.info/982427794/34.

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Hsu, Ko-Chun, and 許克群. "Stimulation of Neocartilage Formation for Culturing Partially Digested Cartilage Tissue Fragments under High Hydro static Pressure in Vitro." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/5frzq7.

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碩士<br>國立交通大學<br>機械工程系所<br>92<br>In Articular cartilage, chondrocytes are embedded in an extracellular matrix composed of water, soluble constituents, and insoluble polymers. The physical stimulation of hydrostatic pressure is known to influence the development, maturation, and degeneration of cartilage. Previous animal and tissue explant studies have shown that time-varying dynamic tissue loading can increase the synthesis and deposition of matrix molecules in an amplitude, frequency, duration ands three-dimensional culture. In this study, a novel hydrostatic pressure bioreactor system was des

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Schöneich, Michael. "In situ Charakterisierung der Phasenbildung — Konzept und Anwendung der Analyse von Festkörper-Gas-Reaktionen durch Gesamtdruckmessungen." Doctoral thesis, 2012. https://tud.qucosa.de/id/qucosa%3A26743.

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In der vorliegenden Arbeit wird das Konzept einer druckbasierten Analyse von Fest-Gas-Gleichgewichten hinsichtlich theoretischer wie experimenteller Zusammenhänge untersucht. Hierfür erfolgt eine gezielte Nutzung der Beziehungen von theoretischen und experimentell zugänglichen physikalischen Parametern, um so die Grundlage für eine spätere Anwendung im Kontext der Syntheseplanung zu ermöglichen. Im Speziellen handelt es sich im vorgestellten Konzept um die aus festkörperanalytischer Sicht häufig vernachlässigte Beziehung zwischen dem Dampfdruck von Festkörpern und dem chemischen Potenzial. Ne

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Ferreira, Ana Vanessa Fernandes. "Incorporation of elastase inhibitor in silk fibroin nanoparticles for transdermal delivery." Master's thesis, 2013. http://hdl.handle.net/1822/28648.

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Dissertação de mestrado em Bioengenharia<br>Human neutrophil elastase, as inflammatory response, has the capacity to degrade collagen and elastin component of extracellular matrix, being extensively involved in wrinkles formation induced by UV radiation damage. In order to develop a cosmetic antiwrinkling emulsion, we incorporated a potent synthetic HNE inhibitor, sivelestat (IC50 = 44 nM, Ki = 0.2 μM), into biopolymeric nanoparticles prepared by high-energy emulsification methods. As nanomaterial was used Bombyx mori silk fibroin protein, an FDA approved natural biocompatible and biodeg

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