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Thèses sur le sujet « Numerical analysis »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 25 juillet 2025

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1

PATERNESI, ALESSANDRA. "Numerical analysis of traditionally excavated shallow tunnels." Doctoral thesis, Università Politecnica delle Marche, 2017. http://hdl.handle.net/11566/245437.

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Lo scavo di gallerie rappresenta sicuramente una tra le sfide più impegnative che un ingegnere civile possa affrontare. Ciò è dovuto principalmente alla natura tridimensionale di questo problema di interazione terreno-struttura ma anche alle numerose incertezze che possono entrare in gioco nella progettazione. Recentemente, le tecniche di calcolo numeriche, che permettono una più ampia comprensione del problema, hanno subito un notevole sviluppo, diventando una risorsa fondamentale per la progettazione di scavi in sotterraneo. Tuttavia, solo ingegneri con una buona preparazione numerica son

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2

Ushaksaraei, Reza. "Numerical analysis of structural masonry /." *McMaster only, 2002.

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3

Bernving, Niels. "Numerical thermal analysis of SEAM." Thesis, KTH, Rymd- och plasmafysik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-218037.

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This thesis is on the topic of numerical thermal analysis, specically of the SmallExplorer for Advanced Missions SEAM. SEAM is a 3 unit Cubesat, which isgoing to be launched in a sun-synchronous orbit to measure the magnetic sphere.It makes use of a boom deployment system to remove the sensors from themagnetic eld inuences of the body. The goal of this thesis is to study thethermal behaviour of the satellite, specically the internal components and thethermal deformation of the boom structure. The numerical simulations makeuse of the Monte Carlo Ray-tracing method. Furthermore thermal vacuumcyc

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4

Ratnanather, John Tilak. "Numerical analysis of turbulent flow." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.236094.

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5

SILVA, JULIO CESAR DA. "NUMERICAL ANALYSIS OF NAILED STRUCTURES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1999. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=904@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>Esta pesquisa tem como objetivo a implementação de uma ferramenta numérica que contabiliza as inclusões horizontais e subhorizontais na parcela de solo devidamente discretizada por elementos finitos. Este modelo implementa a análise de esforços axiais e cisalhantes solicitados nas interfaces grampo/nata, nata/solo e no próprio aço (grampo) e, também, esforços fletores de um material “equivalente” formado pela combinação das rigidezes do grampo e da nata. Este objetivo é alcançado através da implementação de mais um “pacote” de su

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6

Lin, Wei. "Numerical Analysis of Magnetohydrodynamic Pump." Youngstown State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1317230260.

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7

Edwards, David Huntley. "Numerical analysis of spudcan foundations." Thesis, Imperial College London, 2007. http://hdl.handle.net/10044/1/8050.

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Humphries, Antony R. "Numerical analysis of dynamical systems." Thesis, University of Bath, 1993. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.358937.

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Chen, Chuan. "Numerical algorithms for data processing and analysis." HKBU Institutional Repository, 2016. https://repository.hkbu.edu.hk/etd_oa/277.

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Magnetic nanoparticles (NPs) with sizes ranging from 2 to 20 nm in diameter represent an important class of artificial nanostructured materials, since the NP size is comparable to the size of a magnetic domain. They have potential applications in data storage, catalysis, permanent magnetic nanocomposites, and biomedicine. To begin with, a brief overview on the background of Fe-based bimetallic NPs and their applications for data-storage and catalysis was presented in Chapter 1. In Chapter 2, L10-ordered FePt NPs with high coercivity were directly prepared from a novel bimetallic acetylenic alt

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10

Piqueras, García Miguel Ángel. "Numerical Methods for Multidisciplinary Free Boundary Problems: Numerical Analysis and Computing." Doctoral thesis, Universitat Politècnica de València, 2018. http://hdl.handle.net/10251/107948.

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Multitud de problemas en ciencia e ingeniería se plantean como ecuaciones en derivadas parciales (EDPs). Si la frontera del recinto donde esas ecuaciones han de satisfacerse se desconoce a priori, se habla de "Problemas de frontera libre", propios de sistemas estacionarios no dependientes del tiempo, o bien de "Problemas de frontera móvil", asociados a problemas de evolución temporal, donde la frontera cambia con el tiempo. La solución a dichos problemas viene dada por la expresión de la(s) variable(s) dependiente(s) de la(s) EDP(s) junto con la función que determina la posición de la frontera

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11

Koray, Erge. "Numerical And Experimental Analysis Of Indentation." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12605953/index.pdf.

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Indentation tests are widely used with simultaneous measurements of indentation depth and force especially for determining material properties. In this study<br>numerical and experimental investigation of the force-indentation measurements is presented. For indentation tests on anisotropic metals, a novel indenter which is not self similar is used with three transducers to measure the displacements. It is seen that in order to have high repeatability and accuracy at the tests, workpiece and indenter parameters have crucial importance. These parameters in the indentations are analyzed by finite

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12

Hörschler, Ingolf. "Numerical analysis of nasal cavity flows." Aachen Shaker, 2007. http://d-nb.info/988058022/04.

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13

Hörschler, Ingolf. "Numerical analysis of nasal cavity flows /." Aachen : Shaker, 2008. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016470483&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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14

胡思來 and See-loi Wu. "Numerical analysis of dynamic crack propagation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1988. http://hub.hku.hk/bib/B31208459.

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15

Chafid, Achmad. "Numerical analysis of Double Delta antennas." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23331.

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16

Soheili, Ali Reza. "Numerical analysis of coagulation-fragmentation equations." Thesis, Heriot-Watt University, 1997. http://hdl.handle.net/10399/692.

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17

CHUQUIMUNI, ROBERTH APOLINAR AGUILAR. "NUMERICAL ANALYSIS OF RAISING EARTH DAMS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2005. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8624@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Uma das atividades relacionadas à recuperação de barragens envolve o alteamento de barragens existentes, normalmente com o objetivo de aumentar a capacidade de armazenamento dos reservatórios, melhorar o fator de segurança dos taludes ou a proteção da estrutura contra possíveis cheias. O alteamento pode estar previsto no projeto original da barragem, mas na maioria dos casos trata-se de um novo estudo, com a barragem em operação, devendo-se verificar as novas condições de fluxo, efeitos na estabilidade de taludes e na resposta da bar

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18

Rojatkar, Prachi. "Numerical Analysis of Multi Swirler Aerodynamics." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1448037649.

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19

Filippov, Igor Vladimirovich. "Nonperturbative numerical analysis of SY M₁₊₁ /." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486461246817281.

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20

Boon, Simon Edward. "Numerical analysis of hypersonic inlet flows." Thesis, Imperial College London, 2008. http://hdl.handle.net/10044/1/8713.

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The research uses CFD to investigate the internal flow of two hypersonic engine inlets: the Hypersonic Research Engine (HRE), a dual-mode ramjet/scramjet, and the Sustained Hypersonic Flight Experiment (SHyFE), a ramjet developed by QinetiQ. Various interactions are considered, namely shock-expansion, shock-shock and shock-boundary layer interactions. To isolate the different interactions, both inviscid and viscous turbulent computations are considered. For the HRE, axisymmetric computations are performed at Mach numbers of 5, 6 and 7, consistent with ground testing conditions used by NASA. Th

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21

Wu, See-loi. "Numerical analysis of dynamic crack propagation /." [Hong Kong] : University of Hong Kong, 1988. http://sunzi.lib.hku.hk/hkuto/record.jsp?B12354569.

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22

Williams, Roy. "Applications of numerical analysis in navigation." Thesis, Open University, 1994. http://oro.open.ac.uk/57505/.

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Part one of the thesis contains analysis of the methods of computation in navigation. We start with loxodromic navigation and, although this subject is well documented, we make a positive attempt to analyse the subject matter using the methods of differential geometry. We then turn to the problem of shortest path curves and set out an alternative method of solving the problem of navigating along the arc of a great circle on the surface of a sphere which can be generalised to other surfaces. In particular, a contribution made by the thesis is an analysis of the problem of navigating along short

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23

Roveda, Fabio <1984&gt. "Numerical analysis of Dielectric Barrier Discharge." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4572/1/phdthesys.pdf.

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A numerical investigation of dielectric barrier discharge aimed to simulate the electro hydro dynamic interaction is presented. A discharge drift diffusive model according to the Townsend avalanche is described and used to duplicate the plasma kinetics of a DBD actuator. The discharge characteristics dependence upon dielectric material and applied voltage are simulated and the EHD force field according to a simplified approach is presented and discussed. The coupling of DBD results with a fluid dynamic code is also shown. Finally, a new non invasive diagnostic technique for EHD interaction

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Roveda, Fabio <1984&gt. "Numerical analysis of Dielectric Barrier Discharge." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4572/.

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A numerical investigation of dielectric barrier discharge aimed to simulate the electro hydro dynamic interaction is presented. A discharge drift diffusive model according to the Townsend avalanche is described and used to duplicate the plasma kinetics of a DBD actuator. The discharge characteristics dependence upon dielectric material and applied voltage are simulated and the EHD force field according to a simplified approach is presented and discussed. The coupling of DBD results with a fluid dynamic code is also shown. Finally, a new non invasive diagnostic technique for EHD interaction

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25

Ashi, Hala. "Numerical methods for stiff systems." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/10663/.

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Some real-world applications involve situations where different physical phenomena acting on very different time scales occur simultaneously. The partial differential equations (PDEs) governing such situations are categorized as "stiff" PDEs. Stiffness is a challenging property of differential equations (DEs) that prevents conventional explicit numerical integrators from handling a problem efficiently. For such cases, stability (rather than accuracy) requirements dictate the choice of time step size to be very small. Considerable effort in coping with stiffness has gone into developing time-di

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26

Reddinger, Kaitlin Sue. "Numerical Stability & Numerical Smoothness of Ordinary Differential Equations." Bowling Green State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1431597407.

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27

Kannan, Ramaseshan. "Numerical linear algebra problems in structural analysis." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/numerical-linear-algebra-problems-in-structural-analysis(7df0f708-fc12-4807-a1f5-215960d9c4d4).html.

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A range of numerical linear algebra problems that arise in finite element-based structural analysis are considered. These problems were encountered when implementing the finite element method in the software package Oasys GSA. We present novel solutions to these problems in the form of a new method for error detection, algorithms with superior numerical effeciency and algorithms with scalable performance on parallel computers. The solutions and their corresponding software implementations have been integrated into GSA's program code and we present results that demonstrate the use of these impl

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28

Fairbanks, James Paul. "Graph analysis combining numerical, statistical, and streaming techniques." Diss., Georgia Institute of Technology, 2016. http://hdl.handle.net/1853/54972.

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Graph analysis uses graph data collected on a physical, biological, or social phenomena to shed light on the underlying dynamics and behavior of the agents in that system. Many fields contribute to this topic including graph theory, algorithms, statistics, machine learning, and linear algebra. This dissertation advances a novel framework for dynamic graph analysis that combines numerical, statistical, and streaming algorithms to provide deep understanding into evolving networks. For example, one can be interested in the changing influence structure over time. These disparate techniques each co

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29

Yang, Jiang. "Numerical analysis and simulations for phase-field equations." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/29.

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Research on interfacial phenomena has a long history, which has attracted tremendous interest in recent years. One of the most successful tools is the phase-ﬁeld approach. As phase-ﬁeld models usually involve very complex dynamics and it is nontrivial to obtain analytical solutions, numerical methods have played an important role in various simulations. This thesis is mainly devoted to developing accurate, eﬃcient and robust numerical methods and the related numerical analysis for three representative phase-ﬁeld models, namely the Allen-Cahn equation, the Cahn-Hilliard equation and the thin ﬁl

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30

Wu, Jian-Hong. "Numerical analysis of discontinuous rock masses using discontinuous deformation analysis." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149459.

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31

Kakarla, Kishan. "Numerical analysis of seepage in earth slopes." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4078.

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Thesis (M.S.)--West Virginia University, 2005.<br>Title from document title page. Document formatted into pages; contains x, 150 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 72-73).

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Padberg, Kathrin. "Numerical analysis of transport in dynamical systems." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=976817632.

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33

Gemici, Omer Caner. "Numerical Bifurcation Analysis Of Cosymmetric Dynamical Systems." Thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1260425/index.pdf.

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In this thesis, bifurcation phenomena in dynamical systems with cosymmetry and Hamiltonian structure were investigated using numerical methods. Several numerical continuation methods and test functions for detecting bifurcations were presented. The numerical results for various examples are given using a numerical bifurcation analysis toolbox.

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34

Topcu, Nagihan. "Numerical, Analytical And Experimental Analysis Of Indentation." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12605942/index.pdf.

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Indentation is a practical and easy method, therefore, is a preferred method of material characterization. Main aim of this thesis study is to determine anisotropic properties of metals by indentation tests. The basic property of the indenter used in the finite element analyses and experiments is that it is specific to this process. Thesis includes studies on optimization of the indenter geometry, analyses of effects of friction coefficient, multiple indentations, tilting of the indenter and clamping of the specimen on force-displacements curves during indentation by finite element analyses.

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35

Chaban, Habib Fady Ruben. "A numerical sensitivity analysis of streamline simulation." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1541.

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Nowadays, field development strategy has become increasingly dependent on the results of reservoir simulation models. Reservoir studies demand fast and efficient results to make investment decisions that require a reasonable trade off between accuracy and simulation time. One of the suitable options to fulfill this requirement is streamline reservoir simulation technology, which has become very popular in the last few years. Streamline (SL) simulation provides an attractive alternative to conventional reservoir simulation because SL offers high computational efficiency and minimizes numerical

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36

Vinikoff, Nicolas. "Numerical Control: Performance Analysis and Implementation Issues." Thesis, KTH, Reglerteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-101797.

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In this thesis, a digitalization method with nite word-length (resolu- tion N ) of a given stable analog controller guaranteeing the minimum dierence in terms of frequency responses is treated. The challenge has consisted in nding a relevant frequency responses mismatch met- ric and in relating it to the word niteness issue. The analog con- troller is represented in modal state-space form and digitalized with a stability-maintaining approximation (ramp invariance) for dierent sampling periods. It results in digital controllers with block diago- nal transition matrices whose coecients (poles) a

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37

Ruiz, Orlando E. "Numerical analysis of the dropwise evaporation process." Diss., Georgia Institute of Technology, 2000. http://hdl.handle.net/1853/18879.

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38

Bréhier, Charles-Edouard. "Numerical analysis of highly oscillatory Stochastic PDEs." Phd thesis, École normale supérieure de Cachan - ENS Cachan, 2012. http://tel.archives-ouvertes.fr/tel-00824693.

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In a first part, we are interested in the behavior of a system of Stochastic PDEs with two time-scales- more precisely, we focus on the approximation of the slow component thanks to an efficient numerical scheme. We first prove an averaging principle, which states that the slow component converges to the solution of the so-called averaged equation. We then show that a numerical scheme of Euler type provides a good approximation of an unknown coefficient appearing in the averaged equation. Finally, we build and we analyze a discretization scheme based on the previous results, according to the H

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39

Ye, Jianhong. "Numerical analysis of Wave-Seabed-Breakwater interactions." Thesis, University of Dundee, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.604579.

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40

Dufour, Partanen Bianca, and Emelie Järnberg. "Convertible Bonds: a Qualitative and Numerical Analysis." Thesis, KTH, Matematik (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-147346.

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A convertible bond is a nancial instrument which has both an equity part and a xed-income part. The pricing of nancial securities has for quite obvious reasons become extensively studied in the past decades. In this paper we study the Black-Scholes model, based on the equity value, where the equity is modelled by geometric brownian motion. We introduce the pricing of nancial securities in general by Partial Differential Equation (PDE) approach. We continue by studying the convertible bond with a call feature, which is a derivative of the stock price. Our model leads to a free boundary problem

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41

Riches, Colin. "The numerical analysis of pneumatic structural forms." Thesis, University of Newcastle Upon Tyne, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.394722.

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42

TITO, JOSE CARLOS SOLIS. "NUMERICAL ANALYSIS OF DEEP EXCAVATIONS IN SOIL." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2014. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=24688@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>Na atualidade, devido à necessidade de realizar obras de engenharia de grande porte em ambiente urbano, o engenheiro defronta-se muitas vezes com o desafio de executar escavações profundas, as quais devem ser projetadas para serem estáveis e limitar deformações a níveis aceitáveis. Uma escavação profunda estável é aquela cujas paredes não colapsam e o seu fundo não experimenta levantamento descontrolado. Deformações do solo podem afetar const

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43

Pieterse, Cornelius Louwrens. "Mathematical and numerical analysis of electrospraying electrodynamics." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/95529.

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Thesis (MEng) -- Stellenbosch University, 2014<br>ENGLISH ABSTRACT: The electrodynamics of arbitrary, point-to-plane electrospraying geometries, were investigated in this research both analytically and numerically. Electrospraying is the process during which particles of sizes in the nanometre range are simultaneously generated and charged by means of an applied electrostatic field. A high electrostatic potential is applied to a conductive capillary needle, which overcomes the force exerted by the liquid surface tension. One of the primary limitations of this process are corona discharge

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"Numerical analysis of nailed structures." Tese, MAXWELL, 1999. http://www.maxwell.lambda.ele.puc-rio.br/cgi-bin/db2www/PRG_0991.D2W/SHOW?Cont=904:pt&Mat=&Sys=&Nr=&Fun=&CdLinPrg=pt.

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45

Chang, Ming-Jen, and 張銘仁. "Numerical Analysis for Optical Fibers." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/76850692165786554078.

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碩士<br>義守大學<br>電機工程學系<br>89<br>In this thesis we developed numerical software to analyze the characteristics of the optical fiber. Our results are consistent with those of published papers. We also calculated dispersions of many optical fiber profiles including dispersion-shifted fiber and dispersion-flattened fiber. Furthermore, we discussed the relationship between parameters of fibers and dispersions. Finally, we analyzed the properties of the acoustics-induced fiber Bragg grating reflector by using the phase-matching conditions. Both the contra- and co- directional coupling mechanisms a

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46

XIE, YI-ZHANG, and 謝宜璋. "Numerical analysis of MOS transistors." Thesis, 1986. http://ndltd.ncl.edu.tw/handle/29628252509471257437.

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Nosov, Vladimir. "Analysis of Monotone Numerical Schemes." 2016. http://hdl.handle.net/1993/31790.

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In the study of partial differential equations (PDEs) one rarely finds an analytical solution. But a numerical solution can be found using different methods such as finite difference, finite element, etc. The main issue using such numerical methods is whether the numerical solution will converge to the “real" analytical solution and if so how fast will it converge as we shrink the discretization parameter. In the first part of this thesis discrete versions of well known inequalities from analysis are used in proving the convergence of certain numerical methods for the one dimensional Poisso

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48

Hassaninejadfarahani, Foad. "Numerical analysis of reflux condensation." 2016. http://hdl.handle.net/1993/31929.

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Reflux condensation occurs in a vertical tube when there is an upward core flow of vapour (or gas-vapour mixture) and a downward flow of the liquid film. The understanding of this condensation configuration is crucial in the design of reflux condensers and in loss-of-coolant safety analyses in nuclear power plant steam generators. A range of modelling approaches exists for co-current film condensation from gas-vapour mixtures in parallel-plate channels and tubes. These methods are based on marching from the inlet down the tube and do not apply to the reflux condensation. In this research, howe

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49

Huang, Yen-Loung, and 黃彥隆. "Numerical Analysis of Vehicle’s Airoacoustic." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/34157516945295090484.

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碩士<br>國立屏東科技大學<br>車輛工程系碩士班<br>92<br>This thesis plans to use a code that combines fluid and acoustic simulation. The parameters in the near field of sound are computed by FLUENT that is a CFD solver with various turbulent models and the far field sound intensity, that are governed by the Ffowcs-Williams and Hawkins equation (FW-H). There are three steps in the task. The first stage is to demonstrate the numerical package to predict aero-noise of the incompressible flow, through simple 3D geometry sample models are used for validation. The second stage is to reform the numerical package accurac

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Hamdi, Abdelmohsen M. Hisham A. "Hybrid experimental-numerical stress analysis." 1986. http://catalog.hathitrust.org/api/volumes/oclc/13718628.html.

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Thesis (Ph. D.)--University of Wisconsin--Madison, 1986.<br>Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 226-231).

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