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Dissertations / Theses on the topic 'Flow levels'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Suñol, Galofré Francesc. "Bubble and droplet flow phenomena at different gravity levels." Doctoral thesis, Universitat Politècnica de Catalunya, 2011. http://hdl.handle.net/10803/32305.

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Two-phase flows are encountered in a wide range of applications both on-ground and in space. The dynamics of such flows in the absence of gravity is completely different from that in normal gravity due to the absence of buoyancy forces. A deeper understanding of the behavior of multiphase flows is essential in order to improve the operation of devices which require the use of two-phase systems. Analytical and experimental work is still needed for enhancing the control of two-phase flows, due to the theoretical complexity and the lack of experimental data for certain configurations. In this wo

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2

Nithiananthan, Sadhvi. "The influence of low levels of fluid flow on fibroblast behaviour." Thesis, University of Sheffield, 2017. http://etheses.whiterose.ac.uk/17227/.

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Fibroblasts are a type of cell which forms the structural framework of the connective tissue and are key players of wound closure, fibrosis and cancer. These cells experience mechanical perturbations due to matrix remodelling and interstitial fluid movement. Chemical signals from the tissue microenvironment such as Transforming growth factor β1 (TGF-β1) promote differentiation of fibroblasts to a myofibroblastic phenotype marked by enhanced expression of α-smooth muscle actin (α-SMA) rich stress fibres. However most of the evidence for this has been derived in static cultures which do not full

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3

Jraiw, Kadhim Salih. "Prediction and control of road traffic noise associated with non-free flowing vehicular traffic." Thesis, University of Bath, 1987. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.376977.

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4

Winters, Kraig B. "Intensification and instability of internal gravity waves at caustics and critical levels /." Thesis, Connect to this title online; UW restricted, 1989. http://hdl.handle.net/1773/6792.

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5

Guldan, Nathan M. "Relationships between groundwater recharge dates, nitrate levels, and denitrification in a central Wisconsin watershed /." Link to Abstract, 2004. http://epapers.uwsp.edu/abstracts/2004/Guldan.pdf.

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6

Dahlin, Hampus, and Martin Pihl. "Factors that Impact Inventory Levels in a Supermarket System Supplying a Manufacturing Line." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell organisation och produktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-24069.

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Purpose - The purpose of this thesis is to identify factors that have an impact on supermarket inventory levels that supply a manufacturing line and investigate how the impact of these factors can be controlled. In order to fulfill the purpose it was broken down into two research questions. What factors have an impact on supermarket inventory levels supplying a manufacturing line? 2. How can the impact of these factors be controlled? Method - To answer the research questions a literature study and a case study were conducted. The empirical findings from the case study and the literatu

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Blevins, Linda G. "Effects of high levels of steam addition on NOx̳ reduction in laminar opposed flow diffusion flames." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-05042010-020128/.

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Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1992.<br>On t.p. "x̳" is subscript. Vita. Abstract. Includes bibliographical references (leaves 92-97). Also available via the Internet.

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8

Pavlaki, Maria. "Bottom-up contamination in marine systems: model trophic levels to predict cadmium flow in marine organisms." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/16846.

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Doutoramento em Biologia<br>Cadmium is considered one of the most toxic metals to aquatic organisms. This naturally occurring metal is found in the environment in low concentrations due to natural processes, such as volcanic eruptions, natural crust erosion and also anthropogenic activities, such as mining and smelting. As a by-product of zinc mining, cadmium can reach aquatic environment through leaching or to rainwater runoff from the mine areas. It is a non-essential metal for organisms that even at relatively low concentrations can be toxic and may cause adverse effects due to its h

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9

Mertineit, Carmen. "The effect of group B streptococcal meningitis on cerebral prostanoid levels and blood flow regulation in the newborn." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23413.

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The effect of a heat-killed, unencapsulated strain of type III group B streptococcus (GBS), COH 1-13, on cerebral blood flow (CBF) and prostanoid production was investigated in two separate piglet models. In the first model, we examined the temporal profile of changes in CBF and cerebrospinal fluid cytochemistry in response to GBS challenge during a 6 hour study period. Despite marked leukocytosis at 6 hours, GBS did not significantly affect CBF and other cardiovascular parameters, hematology and cerebral prostanoid production. In the second model, we evaluated the early effect of GBS on CBF a

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10

Lagervall, Malin, and Sandra Samuelsson. "Microscopic Simulation of Pedestrian Traffic in a Station Environment: A Study of Actual and Desired Walking Speeds." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-112100.

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In order to attract pedestrians to travel with public transport instead of private cars, the layout of interchange stations is important and should be designed in an effective way. Microscopic simulation of pedestrians can be used to evaluate different layout scenarios or a future increase in flow. The simulation software Viswalk was investigated, where the movements of pedestrians are based on a social force model,. The purpose of this thesis was to investigate simulated walking speeds for different flow levels and to investigate the effects of dividing pedestrians into types with different d

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11

Bartkowiak, Brandon Michael. "Ground-water flow modeling of the impact of quarry dewatering on water levels in the fractured carbonate aquifer, Kelleys Island, Ohio." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1245339592.

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12

Brocklehurst, David. "People flow modelling : benefits and applications within industry." Thesis, Loughborough University, 2005. https://dspace.lboro.ac.uk/2134/795.

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Within the design of any building, there is a requirement for designers to understand the intended purposes of the building and the elements that influence performance. These elements can be as tangible as providing a lecture hall within a university or relatively intangible such as the environmental temperatures of the rooms. The elements involved are generally recognised within the design industry and a combined force of engineers, architects, and specialist advisors work together to ensure all of the elements are in place for each new design. However, one element affecting performance that

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13

Nassir, Neema. "Optimal Integrated Dynamic Traffic Assignment and Signal Control for Evacuation of Large Traffic Networks with Varying Threat Levels." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/297042.

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This research contributes to the state of the art and state of the practice in solving a very important and computationally challenging problem in the areas of urban transportation systems, operations research, disaster management, and public policy. Being a very active topic of research during the past few decades, the problem of developing an efficient and practical strategy for evacuation of real-sized urban traffic networks in case of disasters from different causes, quickly enough to be employed in immediate disaster management scenarios, has been identified as one of the most challenging

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14

Dhungel, Hari. "Investigating the Temporal and Spatial Variability of Flow and Salinity Levels in an Ungaged Watershed for Ecological Benefits:A Case Study of the Mentor Marsh Watershed." Youngstown State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1532016261996327.

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15

Sepúlveda, Toepfer Carlos. "Instrumentation, model identification and control of an experimental irrigation canal." Doctoral thesis, Universitat Politècnica de Catalunya, 2008. http://hdl.handle.net/10803/5951.

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This thesis aims to develop control algorithms for irrigation canals in an experimental framework.<br/>These water transport systems are difficult to manage and present low efficiencies in practice. <br/>As a result, an important percentage of water is lost, maintenance costs increase and water users follow a rigid irrigation schedule.<br/>All these problems can be reduced by automating the operation of irrigation canals.<br/>In order to fulfil the objectives, a laboratory canal, called Canal PAC-UPC, was equipped and instrumented in parallel with the development of this thesis. In general, th

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16

Stitou, Adnane. "SARIMA Short to Medium-Term Forecasting and Stochastic Simulation of Streamflow, Water Levels and Sediments Time Series from the HYDAT Database." Thesis, Université d'Ottawa / University of Ottawa, 2019. http://hdl.handle.net/10393/39785.

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This study aims to investigate short-to-medium forecasting and simulation of streamflow, water levels, and sediments in Canada using Seasonal Autoregressive Integrated Moving Average (SARIMA) time series models. The methodology can account for linear trends in the time series that may result from climate and environmental changes. A Universal Canadian forecast Application using python web interface was developed to generate short-term forecasts using SARIMA. The Akaike information criteria was used as performance criteria for generating efficient SARIMA models. The developed models were valida

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Bigelow, Sarah Grace, and University of Lethbridge Faculty of Arts and Science. "Impacts of flow augmentation on river channel processes and riparian vegetation." Thesis, Lethbridge, Alta. : University of Lethbridge, Faculty of Arts and Science, 2006, 2006. http://hdl.handle.net/10133/649.

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The Little Bow River Project was implemented in 2003 and includes Alberta’s newest dam. The Project involves tripling the diversion of water from the Highwood River to the Little Bow River and subsequently storing the water in the Twin Valley Reservoir. This MSc Thesis provided part of the environmental monitoring for that Project and particularly investigated the impacts of augmented flows on the river channel and riparian vegetation along the upper reach of the Little Bow River. An initial component of the long-term study was to determine the existing associations between fluvial geomorphic

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18

Vikström, Hanna, and Kosovare Shala. "Can sugar be good for your oral health? Correlations between caries and levels of bound monosaccharides in whole saliva." Thesis, Malmö högskola, Odontologiska fakulteten (OD), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-19868.

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Introduktion och syfte: Kariesutveckling influeras av faktorer hos både värd och bakterier. Men när olika individer exponeras för samma nivåer av externa riskfaktorer, är en del individer mer mottagliga för karies jämfört med andra. En förklaring skulle kunna vara olika glykosylering av glykoprotein i saliven. I denna pilotstudie undersökte vi skillnaden i nivåer av monosackariderna sialinsyra, fukos och galaktos hos personer som aldrig haft karies och personer som har/har haft karies. Syftet var även att undersöka om plackenzym kan vara en modifierare av nämnda glykoprotein.Material och metod

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19

Carrera, Hernández Jaime Jesús. "Spatio-temporal analysis of aquifer recharge and groundwater potentiometric levels in the Basin of Mexico through the development of a regional database and an open source tool for groundwater flow modelling." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=18446.

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The Basin of Mexico, where the Mexico City Metropolitan Zone (MCMZ) and its 20 million inhabitants are located, has had a two-sided approach towards water management, as it has struggled to drain the lakes that once covered this region while at the same time it started to transport in water from adjacent basins in the 1950s for water supply. In addition, the large amount of water extracted from the Basin's aquifer has caused drawdown of the groundwater table and consequently, land subsidence which reaches 40 cm/yr in some areas.The inhabitants of the Basin of Mexico, which comprises five diffe

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20

Johnson, Christopher Gurney. "Granular shocks, particle size segregation and levee formation in avalanches and debris flows." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/granular-shocks-particle-size-segregation-and-levee-formation-in-avalanches-and-debris-flows(a90bcaa3-a056-4691-bc8d-de7b484e2590).html.

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Debris flows, avalanches and other geophysical mass flows pose a significant hazard to settlements in or near mountainous regions. Understanding the physical processes that govern these flows is an essential part of hazard assessment and mitigation strategies. This thesis addresses two aspects of geophysical mass flows: flow self-channelisation due to the formation of lateral levees, and granular shocks, which occur when a rapidly-moving debris flow or avalanche collides with an obstacle. We present the results of large-scale debris flow experiments in which the flow is channelised by coarse-p

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21

Seta, Felipe da Silva. "Reconfiguração de sistemas de distribuição considerando incertezas através de fluxo de potência intervalar e sistemas imunológicos artificiais." Universidade Federal de Juiz de Fora, 2015. https://repositorio.ufjf.br/jspui/handle/ufjf/427.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2016-01-19T10:47:34Z No. of bitstreams: 1 felipedasilvaseta.pdf: 1053075 bytes, checksum: 8a24a576cad55e9b46efe4bde9405104 (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2016-01-25T17:44:56Z (GMT) No. of bitstreams: 1 felipedasilvaseta.pdf: 1053075 bytes, checksum: 8a24a576cad55e9b46efe4bde9405104 (MD5)<br>Made available in DSpace on 2016-01-25T17:44:56Z (GMT). No. of bitstreams: 1 felipedasilvaseta.pdf: 1053075 bytes, checksum: 8a24a576cad55e9b46efe4bde9405104 (MD5) Previous issue date:

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22

Herrala, S. (Sauli). "Level set clustering in a flow cytometry dataset." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201604191509.

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Pro Gradu -työn tarkoituksena oli testata kuinka hyvin tasopuumenetelmä soveltuu virtaussytometria-aineiston klusterointiin, ja verrata sitä k-lähimmän naapurin menetelmään. Tasopuumenetelmää myös parannettiin lisäämällä Nelder-Mead (NM) -optimointimenetelmä yhteen työvaiheeseen, jotta laskenta-ajat pysyisivät hallinnassa. Virtaussytometriassa mitataan yksittäisia soluja ja niiden ominaisuuksia, kun ne kulkevat laserin läpi. Ennen mittausta näyte on käsitelty fluerosoivalla aineella, jolloin solu hohtaa valon aallonpituuksia kulkiessaan laserin läpi. Nykyaikaiset laitteet pystyvät mittaamaan

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23

Lee, Haegyun. "Level-set finite element simulation of free-surface flow." Diss., University of Iowa, 2007. http://ir.uiowa.edu/etd/168.

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Al-Tamimi, Akrum Husni Jalal. "Two-dimensional transient flow in non-level irrigation basins." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187396.

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Shallow water flow over level and non-level soil surfaces is governed by three partial differential equations accounting for momentum in the X₁- and x₂-directions and conservation of mass. An explicit one-dimensional model using a cell based finite difference scheme was used in an attempt to solve those equations numerically, utilizing the zero-inertia assumption; but stability analysis indicated the scheme to be unstable. An implicit non-linear version of the same scheme proved to be consistent and unconditionally stable. To validate the implicit one-dimensional cell-based zero-inertia model,

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25

Daoud, Marwa. "Genetic and phenotypic patterns of variabilities in Arenaria grandiflora L. species complex (Caryophyllaceae) : new elements for taxonomy and conservation." Thesis, Paris, Muséum national d'histoire naturelle, 2017. http://www.theses.fr/2017MNHN0013/document.

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La conservation au niveau population est extrêmement nécessaire pour limiter la perte de biodiversité au sein d'une espèce ou d'un complexe d'espèces. Ainsi, l'évaluation de la variabilité inter-populationnelle dans le complexe est reconnue comme première étape importante pour bien définir les plans de conservation des espèces menacées. Arenaria grandiflora form un complexe d'espèces herbacées pérennes à courte durée de vie (4 ans en moyenne) menacé dans certains sites de ses zones de distribution en Europe. A ce jour, sa taxonomie n'est pas bien résolue, ce qui entraîne des problèmes potentie

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Russell, Griffith B. "Local-and system-level thermal management of a single level integrated module (SLIM) using synthetic jet actuators." Thesis, Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/18908.

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27

Godoi, Lucas Antonio Alves de. "Transformador de estado sólido no controle de fluxo de potência em redes de distribuição." Ilha Solteira, 2018. http://hdl.handle.net/11449/154491.

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Orientador: Júlio Borges de Souza<br>Resumo: O transformador de estado sólido tem se apresentado como uma ferramenta indispensável na construção das novas redes elétricas inteligentes, uma vez que essa nova estrutura de rede altera o layout tradicional, viabilizando a conexão de fontes de energia descentralizadas. Contudo, essa conexão de sistemas de geração distribuída na rede originou a bidirecionalidade do fluxo de potência, resultando em um novo panorama para as atividades de operação e manutenção das redes para as distribuidoras de energia. A análise dos possíveis impactos técnicos gerado

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Lee, Yan-pui, and 李昕鋇. "A new approach to presenting congestion level alerts to road users." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B46541421.

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29

Kuang, Xingxing, and 匡星星. "Air and water flows induced by water level change in aquifers." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/196080.

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The study of air and water flows induced by water level changes is important for a better understanding of water release in response to pumping in unconfined aquifers and give new insights into pumping test data analysis. To improve the unsaturated flow and air-water two-phase flow numerical modeling of unconfined aquifer pumping tests, an improved unsaturated hydraulic conductivity model and a new relative air permeability model were proposed. A synthesis of the literature on subsurface airflow induced by natural forcings was presented to provide a better understanding of the generated airflo

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30

Bellalta, Boris. "Flow-level QoS guarantees in IEEE 802.11e EDCA-based WLANs." Doctoral thesis, Universitat Pompeu Fabra, 2007. http://hdl.handle.net/10803/7539.

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Les xarxes WLANs possibiliten un accés de banda ampla a Internet des <br/>d'un terminal mòbil, essent una possible solució alternativa a les <br/>xarxes cel·lulars. Tanmateix, aquest tipus de tecnologia presenta certes <br/>limitacions, com és la difícil coexistència entre fluxos de tràfic <br/>rígids (VoIP) i fluxos de tràfic elàstic (TCP), degut al propi protocol <br/>d'accés al medi. En aquesta tesi es proposa la utilització d'un nou <br/>mecanisme de control d'admissió que utilitzant el nou estàndard de <br/>qualitat de servei en xarxes WLAN (EDCA). La utilització del mecanisme <br/>de con

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Münz, Gerhard. "Traffic anomaly detection and cause identification using flow-level measurements." München Network Architectures and Services, TUM, 2010. http://d-nb.info/1003628834/34.

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Trulls, Fortuny Eduard. "Enhancing low-level features with mid-level cues." Doctoral thesis, Universitat Politècnica de Catalunya, 2015. http://hdl.handle.net/10803/286325.

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Local features have become an essential tool in visual recognition. Much of the progress in computer vision over the past decade has built on simple, local representations such as SIFT or HOG. SIFT in particular shifted the paradigm in feature representation. Subsequent works have often focused on improving either computational efficiency, or invariance properties. This thesis belongs to the latter group. Invariance is a particularly relevant aspect if we intend to work with dense features. The traditional approach to sparse matching is to rely on stable interest points, such as corners, wher

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33

Olsson, Elin. "Mass Conserving Simulations of Two Phase Flow." Licentiate thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3851.

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34

Chew, Lup Wai. "Passive enhancement of air flow at pedestrian level in built environments." Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111767.

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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2017<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 77-79).<br>A densely built environment has low wind speed at the pedestrian level due to flow obstruction induced by buildings. Urban street canyons, the outdoor spaces formed between buildings, often have much lower wind speed than the atmospheric wind above the roof level. In tropical regions, wind plays an important role to improve outdoor thermal comfort of urban inhabitants by increasing the convective heat t

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35

Rosander, Peter. "Averaging level control in the presence of frequent inlet flow upsets." Licentiate thesis, Linköpings universitet, Reglerteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77049.

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Buffer tanks are widely used within the process industry to prevent flow variations from being directly propagated throughout a plant. The capacity of the tank is used to smoothly transfer inlet flow upsets to the outlet. Ideally, the tank thus works as a low pass filter where the available tank capacity limits the achievable flow smoothing. For infrequently occurring upsets, where the system has time to reach steady state between flow changes, the averaging level control problem has been extensively studied. After an inlet flow change, flow filtering has traditionally been obtained by letting

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Gendrault, Yves. "Structuration d'un flot de conception pour la biologie synthétique." Phd thesis, Université de Strasbourg, 2013. http://tel.archives-ouvertes.fr/tel-01015878.

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La biologie synthétique est une science issue du rapprochement entre les biotechnologies et les sciences pour l'ingénieur. Elle consiste à créer de nouveaux systèmes biologiques par une combinaison rationnelle d'éléments biologiques standardisés, découplés de leur contexte naturel. L'environnement, l'agroalimentaire et la santé figurent parmi ses principaux domaines d'application. Cette thèse s'est focalisée sur les aspects liés à la conception ex-vivo de ces biosystèmes artificiels. A partir des analogies réalisées entre les processus biologiques et certaines fonctions électroniques, l'accent

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Parmhed, Oskar. "Near surface atmospheric flow over high latitude glaciers." Doctoral thesis, Stockholm University, Department of Meteorology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-197.

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<p>In this thesis various descriptions of the near surface atmospheric flow over a high latitude glacier is used in an effort to increase our understanding of the basic flow dynamics there.</p><p>Through their contribution to sea-level change, mountain glaciers play a significant role in Earth’s climate system. Properties of the near surface atmospheric flow are important for understanding glacier response to climate change.</p><p>Here, the near surface atmospheric flow is studied from several perspectives including the effects of both rotation and slope. Rotation is an important aspect of mos

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Münz, Gerhard [Verfasser]. "Traffic anomaly detection and cause identification using flow-level measurements / Gerhard Münz." München : Network Architectures and Services, TUM, 2010. http://d-nb.info/1003628834/34.

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Head, John [Verfasser]. "The surgery and level-set approaches to mean curvature flow / John Head." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1025939417/34.

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Johnson, Pamela Christine. "Bicycle Level of Service: Where are the Gaps in Bicycle Flow Measures?" PDXScholar, 2014. https://pdxscholar.library.pdx.edu/open_access_etds/1975.

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Bicycle use is increasing in many parts of the U.S. Local and regional governments have set ambitious bicycle mode share goals as part of their strategy to curb greenhouse gas emissions and relieve traffic congestion. In particular, Portland, Oregon has set a 25% mode share goal for 2030 (PBOT 2010). Currently bicycle mode share in Portland is 6.1% of all trips. Other cities and regional planning organizations are also setting ambitious bicycle mode share goals and increasing bicycle facilities and programs to encourage bicycling. Increases in bicycle mode share are being encouraged to increas

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Gavin, Colin Michael. "The fattening phenomenon for level set solutions of the mean curvature flow." Thesis, University of British Columbia, 2017. http://hdl.handle.net/2429/61267.

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Level set solutions are an important class of weak solutions to the mean curvature flow which allow the flow to be extended past singularities. Unfortunately, when singularities do develop it is possible for the Hausdorff dimension of the level set solution to increase. This behaviour is referred to as the fattening phenomenon. The purpose of this thesis is to discuss this phenomenon and to provide concrete examples, focusing especially on its relation to the uniqueness of smooth solutions. We first discuss the definition of level set solutions in arbitrary codimension, due to Ambrosio and Son

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Shin, Seungwon. "A level contour reconstruction method for three-dimensional multiphase flows and its application." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/17557.

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Balcázar, Arciniega Néstor Vinicio. "Numerical simulation of multiphase flows : level-set techniques." Doctoral thesis, Universitat Politècnica de Catalunya, 2014. http://hdl.handle.net/10803/279386.

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This thesis aims at developing numerical methods based on level-set techniques suitable for the direct numerical simulation (DNS) of free surface and interfacial flows, in order to be used on basic research and industrial applications. First, the conservative level-set method for capturing the interface between two fluids is combined with a variable density projection scheme in order to simulate incompressible two-phase flows on unstructured meshes. All equations are discretized by using a finite-volume approximation on a collocated grid arrangement. A high order scheme based on a flux l

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Vuta, Ravi K. "Numerical simulation of moving boundary problem." Link to electronic thesis, 2007. http://www.wpi.edu/Pubs/ETD/Available/etd-050407-082551/.

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Kronbichler, Martin. "Computational Techniques for Coupled Flow-Transport Problems." Doctoral thesis, Uppsala universitet, Avdelningen för teknisk databehandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-162215.

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This thesis presents numerical techniques for solving problems of incompressible flow coupled to scalar transport equations using finite element discretizations in space. The two applications considered in this thesis are multi-phase flow, modeled by level set or phase field methods, and planetary mantle convection based on the Boussinesq approximation. A systematic numerical study of approximation errors in evaluating the surface tension in finite element models for two-phase flow is presented. Forces constructed from a gradient in the same discrete function space as used for the pressure are

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Wilhelmi, Julie Lynn 1974. "Analyzing the Boeing 777 link the flow process for value stream flow reduction against the Lean Aerospace Initiative's enterprise level roadmap." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/82208.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; and, (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, 2001.<br>Includes bibliographical references (leaf 67).<br>by Julie Lynn Wilhelmi.<br>S.M.

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Johansson, Niklas. "Implementation of a standard level set method for incompressible two-phase flow simulations." Thesis, Uppsala universitet, Avdelningen för teknisk databehandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-154651.

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The level set method is a powerful way of tracking surfaces by defining the surface as a zero level set of a continuous function that is usually a signed distance function. The level set method is one of the best methods for simulating multi-phase flow because it can easily handle fast topological changes, as well as splitting and merging of fluids. In this thesis, a standard level set method was implemented in C++, using the finite element method library deal.II, to simulate incompressible two-phase flow on some benchmark problems. The results show a significant change of mass in the simulati

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Hartmann, Daniel [Verfasser]. "A Level-Set Based Method for Premixed Combustion in Compressible Flow / Daniel Hartmann." Aachen : Shaker, 2010. http://d-nb.info/1120864143/34.

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Palekar, Nipun Pushpasheel. "Job Sequencing & WIP level determination in a cyclic CONWIP Flowshop with Blocking." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34997.

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A CONWIP (Constant Work-In-Progress) system is basically a hybrid system with a PUSH-PULL interface at the first machine in the line. This research addresses the most general case of a cyclic CONWIP system by incorporating two additional constraints over earlier studies namely; stochastic processing times and limited intermediate storage. One of the main issues in the design of a CONWIP system is the WIP level 'M', to be maintained. This research proposes an iterative procedure to determine this optimal level. The second main issue is the optimization of the line by determining an appropriate

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Zhou, Lin. "Acoustic characterization of orifices and perforated liners with flow and high-level acoustic excitation." Doctoral thesis, KTH, MWL Strömningsakustik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-167114.

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This thesis is motivated by the need for noise control in aircraft engine with orifices and perforated liner. The presence of high-level acoustic excitation, different flow situations either bias flow, grazing flow or any combination in the aircraft engine, makes the acoustic behavior complex due to the interaction between sound and flow over the lined wall. Both systematic acoustic prediction of aircraft engines and liner optimization necessitate progress in impedance measurement methods by including the effect of the complex flow situations. The aim of the present thesis is to experimentally

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