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Dissertations / Theses on the topic 'Simulation model of a gas station'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

Zhou, Li. "Simulating the daily gasoline price-setting behaviour of gas stations in Cincinnati by agent-based modeling." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1258662185.

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2

Vettorazzo, Carolina Maia. "Model predictive control of gas compression station in off-shore production platforms." reponame:Repositório Institucional da UFSC, 2016. https://repositorio.ufsc.br/xmlui/handle/123456789/179945.

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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia de Automação e Sistemas, Florianópolis, 2016.<br>Made available in DSpace on 2017-10-10T04:09:13Z (GMT). No. of bitstreams: 1 348412.pdf: 1522637 bytes, checksum: bfc8477785a30cc5de8726097fb056f2 (MD5) Previous issue date: 2016<br>Uma plataforma off-shore normalmente produz petróleo bruto e gás natural. O gás é tratado para a remoção da humidade e sua pressão e sua temperatura são modificadas de acordo com sua aplicação final. Parte do gás é direcionado para a linha de

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3

Vigstrand, Oscar. "Development of an absorption model for gas discharge lamp simulation." Thesis, Malmö universitet, Malmö högskola, Institutionen för materialvetenskap och tillämpad matematik (MTM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-42518.

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Ultraviolet (UV) light has been used for disinfection purposes for over 100 years. Irradiation by UV light is a method to disinfect surfaces in order to prevent microbiological growth. At Tetra Pak this is of great importance as they are manufacturer of filling machines. Those filling machines must ensure a certain level of sterility on all packages produced. The irradiation process can be simulated using Geant4 which is a software package that tracks particles through matter. The simulation model used today does not consider the absorption of photons inside of medium-pressure UV lamps. By und

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4

Yan, Ming. "WeldSim : a model for simulating gas metal arc welding." Thesis, The University of Sydney, 2001. https://hdl.handle.net/2123/27861.

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The aim of the project described in this thesis is to develop a theoretical model to predict the performance of gas metal arc welding, also known as metal inert gas welding (MIG) and achieve a better understanding of the mechanism and the physical processes involved. The gas metal arc welding simulation model - WeldSim is an electrical circuit developed from a basic circuit model. It incorporates results from a free-burning arc model to describe the arc and a second order differential equation to describe one-dimensional energy conservation in the welding anode. WeldSim considers the effec

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5

Xu, Pu. "A circuit model for simulating gas metal arc welding." Thesis, The University of Sydney, 1999. https://hdl.handle.net/2123/27678.

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An electrical circuit was developed to model the behaviour of gas metal arc welding (GMAW), also known as metal inert gas welding (MIG). The model incorporates results from a one-dimensional free-burning arc model to describe the arc and a second order differential equation to describe one—dimensional energy conservation in the welding anode.

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6

COELHO, FERNANDO MARTINS CAMPOS. "NUMERICAL SIMULATION OF TWO-PHASE GAS PIPELINE BLOWDOWN WITH HOMOGENEOUS MODEL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=27171@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>O Brasil possui uma já extensa malha offshore de gasodutos e, no desenvolvimento da produção do Pré-Sal, esta deve continuar se expandindo em razão das necessidades de aumento da capacidade de escoamento de gás e também da sua reinjeção nos próprios reservatórios (seja apenas como descarte ou como um método de recuperação avançado). Uma vez instalada, esta malha deve ser periodicamente passar por manutenção, o que implica em eventos esporádic

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7

Kocer, Gulru. "Aerothermodynamic Modeling And Simulation Of Gas Turbines For Transient Operating Conditions." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609642/index.pdf.

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In this thesis, development of a generic transient aero-thermal gas turbine model is presented. A simulation code, gtSIM is developed based on an algorithm which is composed of a set of differential equations and a set of non-linear algebraic equations representing each gas turbine engine component. These equations are the governing equations which represents the aero-thermodynamic process of the each engine component and they are solved according to a specific solving sequence which is defined in the simulation code algorithm. At each time step, ordinary differential equations are integrated

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8

Polikarpov, Alexey. "Numerical simulation of rarefied gas flows based on the kinetic approach." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10088.

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Ce travail de thèse porte sur le développement de la méthode des vitesses discrètes pour la résolution numérique de équations cinétiques modèles, BGK, S modèle et ES modèle, qui représentent les différentes approximations de l’équation de Boltzmann<br>This work is devoted to the development of the numerical resolution of the kinetic model equations such as BGK, S-model, ES-model by the discrete velocity method. The different approximations of the Boltzmann equation are presented

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9

Burkes, Darryl A. "X-33 TELEMETRY BEST SOURCE SELECTION, PROCESSING, DISPLAY, AND SIMULATION MODEL COMPARISON." International Foundation for Telemetering, 1998. http://hdl.handle.net/10150/609673.

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International Telemetering Conference Proceedings / October 26-29, 1998 / Town & Country Resort Hotel and Convention Center, San Diego, California<br>The X-33 program requires the use of multiple telemetry ground stations to provide continuous coverage of the launch, ascent, re-entry and approach phases for flights from Edwards AFB, California, to landings at Dugway Proving Grounds, Utah, and Malmstrom AFB, Montana. This paper will discuss the X-33 telemetry requirements and design, including information on the fixed and mobile telemetry systems, automated best source selection system, process

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10

Samadov, Hidayat. "Analyzing Reservoir Thermal Behavior By Using Thermal Simulation Model (sector Model In Stars)." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613336/index.pdf.

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It is observed that the flowing bottom-hole temperature (FBHT) changes as a result of production, injection or shutting the well down. Variations in temperature mainly occur due to geothermal gradient, injected fluid temperature, frictional heating and the Joule-Thomson effect. The latter is the change of temperature because of expansion or compression of a fluid in a flow process involving no heat transfer or work. CMG STARS thermal simulation sector model developed in this study was used to analyze FBHT changes and understand the reasons. Twenty three main and five additional cases that were

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11

Wells, Derek A. "Simulation of a Wireless Communication Channel to Determine a Best Topology for a Base Station Array Antenna." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/31230.

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This thesis presents simulation data on array operation in wideband communication systems. It is shown that array structures with closer inter-element spacing outperform structures with much larger inter-element spacing. It is also shown that circular structures outperform linear structures. This performance difference between the classifications of arrays is due largely to the circular array's ability to handle high levels of interference. Even though a diversity combining scheme (MRC) was used in the simulator, the arrays provided interference rejection capabilities due to the closely spac

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12

Baldijão, Pereira Lucia Beatriz. "Modélisation et simulation d'une station d'épuration des eaux usées urbaines par boues activées." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL087N.

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Les stations d'épurations des eaux usées urbaines sont des systèmes dynamiques soumis à des variations importantes et non contrôlées de débit, de concentration et de composition des effluents qui les traversent. Les modèles mathématiques sont essentiels pour décrire, prédire et contrôler les variations de fonctionnement de ce procédé. L’objectif du présent travail est de réaliser un logiciel permettant une application pratique de cette modélisation. La modélisation s'appuie sur des mesures effectuées sur la station d'épuration de boues activées de Nancy-Maxéville qui ont mis en évidence le for

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13

Udechukwu, Izunna David. "Development of a model for computational fluid dynamics simulation of liquefied natural gas vapour dispersion." Thesis, Kingston University, 2015. http://eprints.kingston.ac.uk/34537/.

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Liquefied Natural Gas (LNG) is currently playing an important role in the world energy markets. This is evidenced by growing demand and increased construction of LNG facilities across Europe and the United States. In the event of spill from any of the facilities handling LNG such as during liquefaction, transportation or regasification, flammable vapour is formed which disperses through the atmosphere constituting fire and explosion hazards. To ensure public safety in the midst of growing LNG demand and facilities construction, industries are usually mandated to demonstrate that public safety

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14

Thewalim, Yasar. "Retention time predictions in Gas Chromatography." Doctoral thesis, Stockholm University, Department of Analytical Chemistry, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-55088.

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In gas chromatography, analytes are separated by differences in their partition between a mobile phase and a stationary phase. Temperature-program, column dimensions, stationary and mobile phases, and flow rate are all parameters that can affect the quality of the separation in gas chromatography. To achieve a good separation (in a short amount of time) it is necessary to optimize these parameters. This can often be quite a tedious task. Using computer simulations, it is possible to both gain a better understanding of how the different parameters govern retention and separation of a given set

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15

Yesilyurt, Gokhan. "Numerical simulation of flow distribution for pebble bed high temperature gas cooled reactors." Texas A&M University, 2004. http://hdl.handle.net/1969.1/372.

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The premise of the work presented here is to use a common analytical tool, Computational Fluid dynamics (CFD), along with a difference turbulence models. Eddy viscosity models as well as state-of-the-art Large Eddy Simulation (LES) were used to study the flow past bluff bodies. A suitable CFD code (CFX5.6b) was selected and implemented. Simulation of turbulent transport for the gas through the gaps of the randomly distributed spherical fuel elements (pebbles) was performed. Although there are a number of numerical studies () on flows around spherical bodies, none of them use the necessary turb

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16

Chowdhury, Fahad Al-Amin. "CFD Simulation of Electrostatic Charging in Gas-Solid Fluidized Beds: Model Development Through Fundamental Charge Transfer Experiments." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/41952.

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The triboelectrification of particles by contact or frictional charging is known to be an operational challenge in the polyolefin industry. Particularly in polyethylene production, gas-solid fluidized bed reactors are known to be susceptible to electrostatic charging due to the rigorous mixing of polyethylene and catalyst particles in a dry environment. The presence of charged particles coupled with a highly exothermic polymerization reaction results in sheet formation on the reactor walls. This behaviour can decrease reactor performance and obstruct the system, consequently forcing a shutdown

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17

Martínez, Ballester Santiago. "NUMERICAL MODEL FOR MICROCHANNEL CONDENSERS AND GAS COOLERS WITH AN IMPROVED AIR-SIDE APPROACH." Doctoral thesis, Universitat Politècnica de València, 2012. http://hdl.handle.net/10251/17453.

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La presente tesis se ha llevado a cabo en el Instituto de Ingeniería Energética de la Universitat Politècnica de València y durante una estancia en el National Institute of Standards and Technology (NIST). El objetivo principal de la tesis es desarrollar un modelo de alta precisión para intercambiadores de calor de microcanales (MCHX), que tiene que ser útil, en términos de coste computacional, para tareas de diseño. En la opinión del autor, existen algunos inconvenientes cuando los modelos existentes se aplican a algunos diseños recientes de intercambiador de calor, tales como MCHXs, bien de

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18

Hermant, Laurent Fernand Leon. "Video data collection method for pedestrian movement variables & development of a pedestrian spatial parameters simulation model for railway station environments." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20148.

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Thesis (PhD)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: The design of railway station environments in South Africa and to a certain extent internationally, is based on rules of thumb. These rules, using general macroscopic principles for determining peak passenger loads are inadequate and misleading for detailed design purposes. The principles advocated in local design guideline documents are erroneous and ignore the highly variable flow nature or “micro-peaking” effects that typically occur within railway station environments. Furthermore, there are no procedures proposed in these

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19

Arimboor, Chinnan Jacob. "Simulation and validation of in-cylinder combustion for a heavy-duty Otto gas engine using 3D-CFD technique." Thesis, KTH, Förbränningsmotorteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-245172.

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Utsläpp från bilar har spelat stor roll de senaste decennierna. Detta har lett till ökad användning av Otto gasmotorer som använder naturgas som bränsle. Nya motordesigner behöver optimeras för att förbättra motorens effektivitet. Ett effektivt sätt att göra detta på är genom användningen av simuleringar för att minska ledtiden i motorutvecklingen. Verifiering och validering av simuleringarna spelar stor roll för att bygga förtroende för och förutsägbarhet hos simuleringsresultaten. Syftet med detta examensarbete är att föreslå förbränningsmodellparametrarna efter utvärdering av olika kombinat

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20

Grauer, Diana Kathryn. "Simulation and optimization of non-isothermal compressible flow through large-bore two-stroke cycle natural gas transmission engines." Diss., Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4230.

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21

Pham, Van Song. "Application of different model concepts for simulation of two-phase flow processes in porous media with fault zones." Aachen Shaker, 2009. http://d-nb.info/1004204205/04.

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22

Khosrow, Ebrahimi. "Numerical simulation of turbulent airflow, tracer gas diffusion, and particle dispersion in a mockup aircraft cabin." Diss., Kansas State University, 2012. http://hdl.handle.net/2097/13609.

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Doctor of Philosophy<br>Department of Mechanical and Nuclear Engineering<br>M.H. Hosni<br>Z.C. Zheng<br>In order to study the capability of computational methods in investigating the mechanisms associated with disease and contaminants transmission in aircraft cabins, the Computational Fluid Dynamics (CFD) models are used for the simulation of turbulent airflow, tracer gas diffusion, and particle dispersion in a generic aircraft cabin mockup. The CFD models are validated through comparisons of the CFD predictions with the corresponding experimental measurements. It is found that using Large Ed

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23

Babayev, Farid Nabi. "Estimation Of Water Alternating Gas (wag) Injection Performance Of An Offshore Field (azeri Field,azerbaijan) Using A Sector Simulation Model." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609852/index.pdf.

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The WAG injection project feasibility of South Flank of Central Azeri field on the basis of simulation model was studied in this thesis work. The 58 sensitivity scenarios were considered to evaluate and analyze the behavior of WAG in this field. Scenarios are based on the important WAG parameters, such as half slug size volume, cycles, WAG ratio, start time, bottomhole injection pressure etc. The Base Case is set with static and dynamic characteristic close to real field. From the scenarios calculated, the Best (Scenario 53, 9.3% incremental oil) and the Worst (Scenario 52, 3.4% incremental oi

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24

Biliyok, Chechet. "Study of power plant with carbon dioxide capture ability through modelling and simulation." Thesis, Cranfield University, 2013. http://dspace.lib.cranfield.ac.uk/handle/1826/12111.

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With an increased urgency for global action towards climate change mitigation, this research was undertaken with the aim of evaluating post-combustion CO2 capture as an emission abatement strategy for gas-fired power plants. A dynamic rate-based model of a capture plant with MEA solvent was built, with imposed chemical equilibrium, and validated at pilot scale under transient conditions. The model predicted plant behaviour under multiple process inputs and disturbances. The validated model was next used to analyse the process and it was found that CO2 absorption is mass transfer limited. The m

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25

Milana, Guteša. "Modelovanje procesa u gasnim turbinama za potrebe primene gasa iz gasifikacije biomase." Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2017. https://www.cris.uns.ac.rs/record.jsf?recordId=104879&source=NDLTD&language=en.

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U okviru istraživačkog rada formiran je matematički model za simulacijuprocesa transformacije energije u postrojenju gasne turbine prisagorevanju gasova srednje ili niže toplotne moći. Data je analiza procesakosagorevanja gasa iz gasifikacije kukuruznog oklaska i prirodnog gasa upostrojenju gasne turbine, za tri različite konfiguracije postrojenja.Analiza je rađena na primeru osnovnog Joule-ovog ciklusa sa vazduhomhlađenim lopaticama.<br>This paper presents mathematical model for simulation of energytransformation process in gas turbine facility with combustion of mediumand low calorific gases

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26

Bataille, Christopher G. F. "Capital for energy and inter-fuel elasticities of substitution from a technology simulation model, estimating the cost of greenhouse gas reduction." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq37479.pdf.

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27

Alvarez, Ferreira Liz Rosana 1980. "Modelo de simulação em base horária da vazão na estação fluviométrica da régua-11 = Simulation model in hourly basis of the flow at the fluviometric station R-11." [s.n.], 2012. http://repositorio.unicamp.br/jspui/handle/REPOSIP/259867.

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Orientador: Secundino Soares Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Elétrica e de Computação<br>Made available in DSpace on 2018-08-21T07:22:00Z (GMT). No. of bitstreams: 1 AlvarezFerreira_LizRosana_M.pdf: 23688904 bytes, checksum: 10e13f1087d3887e3ebf436379b92f08 (MD5) Previous issue date: 2012<br>Resumo: A jusante da confluência dos rios Paraná, Iguaçu, Acaray e Monday situa-se a estação fluviométrica da Régua 11 ou simplesmente R-11, localizada no rio Paraná a aproximadamente 20 km da central de Itaipu, na fronteira entre Brasil, Argen

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28

Kasal, Ondřej. "Zjednodušený model axiálně chlazeného oblouku." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2009. http://www.nusl.cz/ntk/nusl-218009.

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Using of computer technology brings advantages of quick and well-arrange data. Computer technology offers change of transferring information the same way as that often using. Capacity and execution of computer technology is depending on kind and size of elaborated information. It is necessary to use to computer technology in application working with big data range and in application which needs many steps to finish calculation it means when we are using iterative methods. It is computer technology which creates main part of simulation, computation and visualization methods which are using in t

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29

Averkin, Sergey Nikolaevich. "A Global Enhanced Vibrational Kinetic Model for Radio-Frequency Hydrogen Discharges and Application to the Simulation of a High Current Negative Hydrogen Ion Source." Digital WPI, 2015. https://digitalcommons.wpi.edu/etd-dissertations/89.

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A Global Enhanced Vibrational Kinetic (GEVKM) model is presented and applied to the simulation of a new High Current Negative Hydrogen Ion Source (HCNHIS) developed by Busek Co. Inc. and Worcester Polytechnic Institute. The HCNHIS consists of a high-pressure radio-frequency discharge (RFD) chamber in which the main production of high-lying vibrational states of the hydrogen molecules occurs, a bypass system, and a low-pressure negative hydrogen ion production (NIP) region where negative ions are generated by the dissociative attachment of low energy electrons to rovibrationally excited hydroge

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Yang, Mei. "Nitriding - fundamentals, modeling and process optimization." Digital WPI, 2012. https://digitalcommons.wpi.edu/etd-dissertations/127.

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Gas nitriding is an important thermochemical surface treatment that is used to improve the wear and corrosion resistance as well as the fatigue endurance of steel parts. Accurate process control is the effective way to ensure the properties reliability of nitriding process. To realize the accurate process control, the nitriding process parameters need to be modeled and controlled to meet the specifications. There has been ongoing effort on the simulation of the gas nitriding process since 1990s. However, most of the work has been done to simulate the gas nitriding process of pure iron due to t

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31

Hernández, Marco Manuel. "A non-linear quasi-3D model for air management modelling in engines." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/103683.

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El modelado se ha convertido en los últimos años en una herramienta esencial en el diseño de motores de combustión interna alternativos, ya que permite reducir considerablemente el tiempo y los costes de desarrollo. Las metodologías de diseño clásicas se basan en la fabricación de prototipos y la realización de pruebas de ensayo y error. Actualmente, la mayoría de estas pruebas han sido sustituidas por cálculos numéricos, de modo que sólo las opciones de diseño más prometedoras se prueban en realidad en banco motor. Durante años, los códigos unidimensionales de dinámica de gases en el dominio

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Provost, Bianca. "An Improved N2 Model for Predicting Gas Adsorption in MOFs and using Molecular Simulation to aid in the Interpretation of SSNMR Spectra of MOFs." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/31930.

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Microporous metal organic frameworks (MOFs) are a novel class of materials formed through self-assembly of inorganic and organic structural building units (SBUs). They show great promise for many applications thanks to record-breaking internal surface areas, high porosity as well as a wide variety of possible chemical compositions. Molecular simulation has been instrumental in the study of MOFs to date, and this thesis work aims to validate and expand upon these efforts through two distinct computational MOF investigations. Current separation technologies used for CO2/N2 mixtures, found in the

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Lu, Xijia. "An Applied Numerical Simulation of Entrained-Flow Coal Gasification with Improved Sub-models." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1696.

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The United States holds the world's largest estimated reserves of coal and is also a net exporter of it. Coal gasification provides a cleaner way to utilize coal than directly burning it. Gasification is an incomplete oxidation process that converts various carbon-based feedstocks into clean synthetic gas (syngas), which can be used to produce electricity and mechanical power with significantly reduced emissions. Syngas can also be used as feedstock for making chemicals and various materials. A Computational Fluid Dynamics (CFD) scheme has been used to simulate the gasification process for man

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34

ACCURSO, FRANCESCO. "Development of a Phenomenological Combustion Model for Large Bore Dual Fuel Engines." Doctoral thesis, Politecnico di Torino, 2022. http://hdl.handle.net/11583/2972101.

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Håkansson, David. "Aerothermal and Kinetic Modelling of a Gas Turbine Dry Low Emission Combustion System." Thesis, KTH, Strömningsmekanik och Teknisk Akustik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298477.

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Growing environmental concerns are causing a large transformation within the energy industry. Within the gas turbine industry, there is a large drive to develop improved modern dry-low emission combustion systems. The aim is to enable gas turbines to run on green fuels like hydrogen, while still keeping emission as NOx down. To design these systems, a thorough understanding of the aerothermal and kinetic processes within the combustion system of a gas turbine is essential. The goal of the thesis was to develop a one-dimensional general network model of the combustion system of Siemens Energy S

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36

Nie, Yihan. "A multiphysics model for carbon nanotube based nanoelectromechanical contact switch." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/122904/1/Yihan_Nie_Thesis.pdf.

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This research builds up a multiphysics molecular model for nano electromechanical contact switch in a gaseous environment. To predict the device dynamic properties precisely, multiple methods have been incorporated, including: grand canonical Monte Carlo method for adsorption phenomenon, atomistic moment theory for dynamic electric field, and molecular dynamic simulation for carbon nanotube deformation. Using such a model, the charge distribution has been characterized; the adsorption influence on the frequency change and damping ratio has been investigated. The model has a great potential in

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

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

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Wu, Fei. "Electric Vehicle Charging Network Design and Control Strategies." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1479900508609434.

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Lloret, Zoé. "A new model of greenhouse gas transport in the global atmosphere adapted to the evolution of high-performance computing resources." Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASJ021.

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La compréhension du changement climatique en cours implique une bonne connaissance des émissions et des absorptions des gaz à effet de serre sur le globe. Les modèles atmosphériques inverses y contribuent de manière croissante, mais la résolution des modèles planétaires reste grossière, en particulier au regard de l'accroissement de la densité des réseaux de mesure fournissant les observations qu'ils assimilent. Les nouvelles architectures des supercalculateurs, soutenues par les processeurs “Manycore” ou graphiques, permettent une parallélisation massive des calculs et ouvrent des perspective

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Wang, Lina. "Quantification of particle emission characteristics and development of an emission model for use in transport microenvironments affected by traffic emissions." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/46912/1/Lina_Wang_Thesis.pdf.

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Vehicle emitted particles are of significant concern based on their potential to influence local air quality and human health. Transport microenvironments usually contain higher vehicle emission concentrations compared to other environments, and people spend a substantial amount of time in these microenvironments when commuting. Currently there is limited scientific knowledge on particle concentration, passenger exposure and the distribution of vehicle emissions in transport microenvironments, partially due to the fact that the instrumentation required to conduct such measurements is not avail

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Venhoda, Tomáš. "Simulace technologií pro termické zpracování odpadu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230620.

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This thesis mainly deals with the thermal treatment of waste - hazardous waste incineration and energy recovery municipal waste incinerators - their descriptions and analysis of legislative conditions. The flue gas cleaning system energy production in different operating modes is assessed by energy and mass balances. Computational models are developed for this purpose. On this basis, productions of energy from thermal treatment of hazardous and communal waste were compared.

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Smith, Daniel J. "Rapid determination of temperature-dependent parameters for the crystal viscoplasticity model." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/43670.

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Thermomechanical fatigue life prediction is important in the design of Ni-base superalloy components in gas turbine engines and requires a stress-strain analysis for accurate results. Crystal viscoplasticity models are an ideal tool for this stress-strain analysis of Ni-base superalloys as they can capture not only the anomalous yielding behavior, but also the non-Schmid effect, the strain rate dependence, and the temperature dependence of typically large grained directionally-solidified and single crystal alloys. However, the model is difficult to calibrate even for isothermal conditions beca

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John, Yakubu M. "Kinetic modelling simulation and optimal operation of fluid catalytic cracking of crude oil: Hydrodynamic investigation of riser gas phase compressibility factor, kinetic parameter estimation strategy and optimal yields of propylene, diesel and gasoline in fluid catalytic cracking unit." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17323.

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The Fluidized Catalytic Cracking (FCC) is known for its ability to convert refinery wastes into useful fuels such as gasoline, diesel and some lighter products such as ethylene and propylene, which are major building blocks for the polyethylene and polypropylene production. It is the most important unit of the refinery. However, changes in quality, nature of crude oil blends feedstock, environmental changes and the desire to obtain higher profitability, lead to many alternative operating conditions of the FCC riser. There are two major reactors in the FCC unit: the riser and the regenerator.

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De, Rosa Daniele. "Optimizing the use of organic amendments in sub-tropical vegetable cropping systems for improved environmental and agronomic outcomes." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/112419/1/Daniele_De%20Rosa_Thesis.pdf.

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This study aimed to improve the efficiency of the use of organic amendments as a valid substitute for chemical nitrogen fertilizer in sub-tropical vegetable cropping systems. The results proved that predicting and accounting for the nitrogen release from organic amendments offers significant potential agronomic and environmental advantages by maintaining soil fertility and reducing the chemical nitrogen use.

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Wang, Ying. "Numerical study of a confined thermal plume at different flow regimes under the influence of gas radiation." Thesis, La Rochelle, 2020. http://www.theses.fr/2020LAROS005.

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Ce travail est une étude numérique d’un panache thermique confiné en présence de rayonnement de gaz. Le panache est généré par une source de chaleur linéaire immergée dans une cavité cubique remplie d’air. Le but principal est de caractériser l’évolution du panache tout au long de sa transition depuis le régime stationnaire jusqu’à la turbulence, et d’explorer les effets du rayonnement de gaz sur la stabilité, les transferts de chaleur, les champs thermiques et cinétiques du panache.Les simulations numériques DNS sont effectuées pour des nombres de Rayleigh de 106 à 109 avec un logiciel CFD de

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VIGNA, VERONICA. "Modelling energy efficiency of complex ship propulsion systems, considering sludge recycling, exhaust gas recovery and Flettner rotors." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1093175.

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Energy efficiency has become increasingly important during the recent years due to the negative effects of the anthropogenic activities on the environment; in the maritime field IMO is leading a steep slope down policy on Greenhouse gas emission reduction by enacting stricter rules at a fast pace. In addition to the environmental and legal aspects, a key driver for increasing energy efficiency is operational cost savings due to fuel consumption reduction. In this framework, the thesis focuses on the improvement of the energy efficiency of the ship propulsion plant by analysing different kind

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Bouchet, Alexandre. "Expérimentation numérique de la pénétration d'un faisceau intense d'électrons relativistes dans un gaz dense neutre." Grenoble 1, 1988. http://www.theses.fr/1988GRE10156.

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Dans le nez du faisceau, les effets thermiques sont domines parles effets electromagnetiques. Il est donc legitime d'utiliser, en premiere approximation du moins, une approximation froide. On a developpe un code hydrodynamique a faisceau laminaire ou froid; le plasma secondaire est decrit de facon detaillee. On a mis en evidence, outre les proprietes du plasma secondaire et de la carte des champs, la neutralisation progressive en charge du faisceau avec ejection des electrons secondaires, les courants de retour ou d'accompagnement, le point de pincement, et sa vitesse de recession

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Yoon, Seungju. "A new heavy-duty vehicle visual classification and activity estimation method for regional mobile source emissions modeling." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-07122005-204032/.

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Thesis (Ph. D.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2006.<br>Michael O. Rodgers, Committee Chair ; Randall L. Guensler, Committee Member ; Michael D. Meyer, Committee Member ; Michael P. Hunter, Committee Member ; Jennifer H. Ogle, Committee Member.

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Abbasi, Baharanchi Ahmadreza. "Development of a Two-Fluid Drag Law for Clustered Particles Using Direct Numerical Simulation and Validation through Experiments." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2489.

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This dissertation focused on development and utilization of numerical and experimental approaches to improve the CFD modeling of fluidization flow of cohesive micron size particles. The specific objectives of this research were: (1) Developing a cluster prediction mechanism applicable to Two-Fluid Modeling (TFM) of gas-solid systems (2) Developing more accurate drag models for Two-Fluid Modeling (TFM) of gas-solid fluidization flow with the presence of cohesive interparticle forces (3) using the developed model to explore the improvement of accuracy of TFM in simulation of fluidization flow of

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Stone, David Joseph. "Optimal Composition Window of Type 410 Welding Consumables and Base Metals for Hydro-processing Applications." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu149270477418846.

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