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Dissertations / Theses on the topic 'Flow between two cylinders'

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Published: 4 June 2021

Last updated: 1 February 2022

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1

Hegseth, John. "Spatiotemporal patterns in flow between two independently rotating cylinders /." The Ohio State University, 1990. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487676847116532.

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2

Seto, Mae L. "Flow interference effects between two circular cylinders of different diameters." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/29762.

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This thesis investigates different examples of action at a distance, namely the interaction of two circular cylinders of different diameters and the interaction of a cylinder with a wall in various arrangements. Action at a distance modifies both the lift and drag of each one of the objects. The fluid flow interaction between a circular cylinder (of diameter D) with a wall, and a circular cylinder with a smaller (¼D) circular cylinder at Reynolds numbers of ≈ 10,000 were of interest. Manifestations of the interactions include mutual changes in the lift and drag forces, phase, onset and frequ

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3

Jasmine, Hosne Ara. "Hydromagnetic stability of a flow between two co-axial cylinders." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0024/MQ51368.pdf.

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4

Zakaria, Khaled Yahia. "Flow interaction and heat transfer between two cylinders in a uniform air stream." [S.l. : s.n.], 2000. http://deposit.ddb.de/cgi-bin/dokserv?idn=960643664.

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5

Ali, M. A. "Thermal and MHD effects on the stability of Couette flow between two rotating cylinders." Thesis, University of Manchester, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.383882.

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6

Hird, Lee D. "Analysis of the flow field between two eccentric rotating cylinders in the presence of a slotted sleeve." Curtin University of Technology, School of Mathematics and Statistics, 1997. http://espace.library.curtin.edu.au:80/R/?func=dbin-jump-full&object_id=11104.

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Overend et al [68] designed a viscometer to measure the viscosity of slurries that have a tendency to settle. This viscometer consists of a rotating ribbed rotor surrounded by a stationary slotted sleeve; this system is then placed eccentrically within an inclined rotating bowl. It, is claimed that this overcomes most of the difficulties encountered when attempting to obtain accurate measurements for these types of mixtures. If the mixture being sheared within the annulus does not represent the true composition of the slurry being, tested then the results are expected to be inaccurate. The pre

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7

Näsström, David. "Flow- and concentration variation between the cylinders of a diesel engine." Thesis, Linköping University, Department of Electrical Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10175.

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<p>The demands on tomorrows diesel engines regarding fuel consumption and emission levels keep getting more difficult to fulfill. Due to this fact, the control demand is getting bigger and bigger. To be able to comply with the Euro 6 standards, it is believed that engine control need to be conducted individually from cylinder to cylinder if the need for after-treatment systems should be minimized.</p><p>Scania’s approach to handle emission levels so far has been to use exhaust gas recirculation (EGR). To be able to optimize the use of EGR it is necessary to know how the inert gases, water and

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8

Yoshida, Hiroaki. "Studies on gas flows between two coaxial circular cylinders on the basis of kinetic theory." 京都大学 (Kyoto University), 2007. http://hdl.handle.net/2433/136189.

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9

Atilgan, Ahmet Koray. "A Study Of Laminar Forced Film Condensation Of Vapor Flowing In Cross-flow Direction Through The Annular Space Between Two Concentric Cylinders." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607714/index.pdf.

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In this study laminar forced film condensation of vapor flowing in cross-flow direction through the annular space between two concentric cylinders was investigated numerically. To achieve this, governing equations of the vapor and the condensate flow in cross-flow direction between two concentric cylinders were developed. After obtaining the equations in integral forms by using the finite difference technique the vapor boundary layer thicknesses on the inner and outer cylinders and the condensate layer thickness was obtained as

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10

Handa, Masato. "Studies on the Bifurcation of Flows between Two Coaxial Circular Cylinders on the Basis of Kinetic Theory of Gases." 京都大学 (Kyoto University), 2004. http://hdl.handle.net/2433/147648.

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11

Benbelkacem-Benmouffok, Ghania. "Viscoélasticité et écoulements de fluides structurés." Thesis, Vandoeuvre-les-Nancy, INPL, 2009. http://www.theses.fr/2009INPL012N/document.

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Dans le cadre de cette thèse, nous nous intéressons aux différents comportements de fluides structurés (solutions aqueuses de polymères, suspensions), sous écoulements cisaillés. Dans la première partie, nous donnons une description globale des objets constituant le matériau en utilisant une modélisation structurelle, d'une part et en effectuant des mesures de biréfringence pour qualifier l'anisotropie des objets, d'autre part. A travers la loi tentio-optique, nous montrons que le comportement des objets ne dépend que de la contrainte appliquée. En outre, nous étudions les conditions de mesure

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12

趙遠宏 and Yuen-wang Alex Chiu. "Near wake flow interactions of two square cylinders." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31238348.

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13

Chiu, Yuen-wang Alex. "Near wake flow interactions of two square cylinders /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20297099.

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14

Kim, Jueun. "A numerical study of the flow around two staggered cylinders." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=110497.

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The cross-flow past a pair of staggered circular cylinders is investigated numerically at a Reynolds number of 800 using a 2-D random vortex method. The numerical model was validated at a Reynolds number of 200. A flow around two stationary cylinders was investigated at a Reynolds number of 800 for comparison. Besides staggered configurations, tandem and side-by-side arrangements were also studied for better understanding of a flow around two cylinders.For staggered arrangements, four different cylinder configurations were discussed in the stationary cylinders case. For a small pitch ratio, P/

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15

Ye, Zhengcai. "UV Disinfection between Concentric Cylinders." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14641.

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Outbreaks of food-born illness associated with the consumption of unpasteurized juice and apple cider have resulted in a rule published by the U.S. Food and Drug Administration (FDA) in order to improve the safety of juice products. The rule (21 CFR120) requires manufacturers of juice products to develop a Hazard Analysis and Critical Control Point (HACCP) plan and to achieve a 5-log reduction in the number of the most resistant pathogens. Ultraviolet (UV) disinfection is one of the promising methods to reach this 5-log reduction of pathogens. The absorption coefficients of juices typically va

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16

Mohany, Atef M. Ziada Samir. "Flow-sound interaction mechanisms of a single and two tandem cylinders in cross-flow." *McMaster only, 2006.

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17

伍智榮 and Chi-wing Ng. "Interactions of vortices from two circular cylinders in bistable flow regime." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1996. http://hub.hku.hk/bib/B3123608X.

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18

Ng, Chi-wing. "Interactions of vortices from two circular cylinders in bistable flow regime /." Hong Kong : University of Hong Kong, 1996. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18037379.

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19

Sayers, A. T. "Flow interference between groups of three and four equispaced cylinders." Doctoral thesis, University of Cape Town, 1989. http://hdl.handle.net/11427/18696.

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This thesis is a study of the interference forces acting on one cylinder comprising a group of three and four cylinders when situated in a free stream flow. The spacing of the cylinders was such that the lines joining their axes formed an equilateral triangle, and a square respectively. The study is split into two parts, (a) potential flow over the groups of cylinders (b) real flow over the groups of cylinders. Bound with copies of the authors' published papers.~Bibliography: pages 132-137.

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20

Medeiros, E. B. "An experimental study of the aeroelastic behaviour of two parallel interfering circular cylinders." Thesis, University of Salford, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384128.

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21

Yang, Wenchao. "Two-dimensional Wakes and Fluid-structure Interaction of Circular Cylinders in Cross-flow." Diss., Virginia Tech, 2018. http://hdl.handle.net/10919/97563.

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The wake of a bluff body is a representative issue in vortex dynamics that plays a central role in civil engineering, ocean engineering and thermal engineering. In this work, a flowing soap film was used to investigate the wakes of multiple stationary circular cylinders and of a single oscillating cylinder. Corresponding computer simulations were also conducted. Vortex formation of a stationary circular cylinder was analyzed by proper orthogonal decomposition (POD). The POD analysis was used to define an unsteady vortex formation length, which suggests a relationship between the vortex formati

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22

Carmo, Bruno Souza. "On wake interference in the flow around two circular cylinders : direct stability analysis and flow-induced vibrations." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/4697.

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The flow around two identical circular cylinders, arranged in configurations where one of the cylinders is immersed in the wake of the other, is studied using numerical simulations. Two aspects of such flows were considered. The first is the stability of nominally two-dimensional time-periodic wakes to three-dimensional perturbations. We investigated flows around tandem and staggered arrangements with diverse centre-to-centre distances. Direct stability analysis and numerical simulations were employed, and the results are compared to those obtained for the flow around an isolated cylinder. The

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23

Hall, Oskar. "The flow between two coaxial cones." Thesis, University of Exeter, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486775.

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This thesis provides a study of the flow between two coaxial cones, a geometry with many interesting features and of practical importance. We consider the flow for different driving mechanisms and start by studying the highly viscous flow when the fluid is driven by rotation of the cones or a spherical lid. The solution is found through a low Reynolds number e)...pansion expressed as a combination of forced modes and geometric eigenmodes. The latter may cause an infinite sequence of counter-rotating vortices at the apex of the cones, we study the flow topology for a wide range of parameter val

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24

Mekanik, Abolghasem. "General solution for unsteady annular flows between concentric cylinders and annular flow-induced instabilities." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28844.

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The aim of this Thesis is to obtain time-accurate solutions of the Navier-Stokes equations for laminar incompressible unsteady flows generated by oscillating boundaries in an annular region made from two concentric cylinders. For this, a time-dependent coordinate transformation is first used to obtain a fixed computational domain. The resulting governing equations in the fixed domain are discretized in real time based on a three-time-level implicit scheme. A pseudo-time integration with artificial compressibility is then used to reduce the resulting coupled discretized equations in delta form

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25

Gallagher, James Williams. "Stability of axial flow between concentric and eccentric circular cylinders disturbed asymmetrically and nonlinearly." Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/12022.

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26

Zoller, Jürgen. "Added Stiffness Relating to Small Motions of Two Concentric Cylinders Submitted to Axial Annular Incompressible Flow." Forschungszentrum Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:d120-qucosa-31455.

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Axial incompressible, viscous flow is considered in an annular gap between two rigid cylinders. If the cylinders are displaced from their concentric positions in a certain manner, the displacement will cause reaction forces exerted by the fluid pressure. In this investigation the pressure fluctuations caused by the displacement of the structures are approximated by analytical means. Pressure fluctuations in phase with acceleration and velocity of the structure are not calculated here. Stationary flow is considered, because structural displacements are assumed to be small.

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27

Zoller, Jürgen. "Added Stiffness Relating to Small Motions of Two Concentric Cylinders Submitted to Axial Annular Incompressible Flow." Forschungszentrum Rossendorf, 1996. https://hzdr.qucosa.de/id/qucosa%3A21972.

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Axial incompressible, viscous flow is considered in an annular gap between two rigid cylinders. If the cylinders are displaced from their concentric positions in a certain manner, the displacement will cause reaction forces exerted by the fluid pressure. In this investigation the pressure fluctuations caused by the displacement of the structures are approximated by analytical means. Pressure fluctuations in phase with acceleration and velocity of the structure are not calculated here. Stationary flow is considered, because structural displacements are assumed to be small.

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28

Park, Sang Hyan. "The effects between two slotted plate flow meter under single, two, three components flow condition." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1522.

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In previous work on the slotted flow meter, repeatibility and reproducibility were studied under different flow conditions and different configurations. In accordance with previous work, the effects of the distance between the slotted plate were identified as an area requring further investigation. The preset 5D distance is expanded to the 10D distance. The flow coefficient KY, the pressure drop, and the uncertainty analysis is conducted. There were definite deference in the results between the 5D distance and the 10D distance in many aspects. As a base line, the flow coefficient KY showed 0.8

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29

OLIVEIRA, DANIELE DIAS DE. "PARTICLE TRANSPORT IN LAMINAR FLOW BETWEEN TWO PARALLEL PLATES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=32757@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE EXCELENCIA ACADEMICA<br>O escoamento de suspensões concentradas tem grande importância em diversos segmentos da indústria, representando uma maneira econômica de transportar grandes quantidades de materiais sólidos particulados. Uma das aplicações inclui a etapa de perfuração de poços de petróleo direcionais. No decorrer do processo são gerados sedimentos originários do corte da formação, que são remov

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30

ARAUJO, JOSÉ HENRIQUE CARNEIRO DE. "NUMERICAL SIMULATIONS VIA FINITE ELEMENT OF VISCOUS FLOW BETWEEN CONCENTRIC AND ECCENTRIC CYLINDERS WITH ROTATING INNER AND VARIABLE VISCOSITY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1987. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=19059@1.

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COMISSÃO NACIONAL DE ENERGIA NUCLEAR<br>Efetuou-se um estudo numérico do escoamento entre cilindros concêntricos e excêntricos girantes com efeitos de dissipação viscosa presente. Assumiu-se que o cilindro interno estava girando com uma velocidade angular constante e que o externo estava fixo. Assumimos a condição de contorno de não deslizamento para velocidade em ambas as paredes. A temperatura do fluido nas paredes dos cilindros foi assumida constante e seu campo assumimos ser governado por efeitos de convecção e condução, com uma fonte de energia proveniente da dissipação viscosa do escoame

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31

Jakobsson, Hjalmar, and Kasper Karlgren. "Traditional Table vs. Modern Flow Map : A quantitative comparison between two information visualizations." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-209662.

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In today’s world we have access to endless amounts of data of varying kind. We would like to be able to display data in a way that actually feels intuitive and not intimidating. The field of information visualization and data visualization has been around for about 40 years attempting to overcome this very problem, and we are still learning more and more about how to visualize different types of data today. One major problem is that there are so many types of data that it is very difficult to make generalizations about how to display certain types of data. In our study we are comparing two spe

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32

Bambrey, Ross R. "Strong interactions between two co-rotating vortices in rotating and stratified flows /." St Andrews, 2007. http://hdl.handle.net/10023/341.

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33

Rouse, Victoria J. "Comparison of heat transfer and fluid flow characteristics between submerged and free surface jet impingement for two-phase flow." Youngstown State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1546428292091476.

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34

Husin, Shuib. "An experimental investigation into the correlation between Acoustic Emission (AE) and bubble dynamics." Thesis, Cranfield University, 2011. http://dspace.lib.cranfield.ac.uk/handle/1826/7318.

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Bubble and cavitation effects phenomena can be encountered in two-phase gas-liquid systems in industry. In certain industries, particularly high-risk systems such as a nuclear reactor/plant, the detection of bubble dynamics, and the monitoring and measurement of their characteristics are necessary in controlling temperature. While in the petro-chemical engineering industry, such as oil transportation pipelines, the detection and monitoring of bubbles/cavitation phenomena are necessary to minimise surface erosion in fluid carrying components or downstream facilities. The high sensitivity of Aco

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35

Kasapoglu, Serkan. "A Pseudospectral Analysis Of Laminar Natural Convection Flow And Heat Transfer Between Two Inclined Parallel Plates." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/2/12606492/index.pdf.

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Three dimensional laminar natural convection flow of and heat transfer in incompressible air between two inclined parallel plates are analyzed with the Boussinesq approximation by using spectral methods. The plates are assumed to be infinitely long in streamwise and spanwise directions. For these directions, periodic boundary conditions are used and for the normal direction constant wall temperature and no slip boundary conditions are used. Unsteady Navier-Stokes and energy equations are solved using a pseudospectral C code in order to obtain velocity and temperature profiles inside the channe

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36

Martin, Alex D. "A Convergent Approach to the Continuous Synthesis of Telmisartan via a Suzuki Reaction between Two Functionalized Benzimidazoles." VCU Scholars Compass, 2015. http://scholarscompass.vcu.edu/etd/3750.

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A direct and highly efficient synthesis has been developed for telmisartan, the active ingredient in the widely prescribed antihypertensive drug Micardis®. This approach brings together two functionalized benzimidazoles using a high-yielding Suzuki reaction that can be catalyzed by a homogeneous palladium source or palladium on a solid support. The ability to perform the cross-coupling reaction was facilitated by the regio-controlled preparation of a 2-bromo-1-methylbenzimidazole precursor. The method developed is the first reported selective bromination at the 2-position of a benzimidazole an

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37

Tsuei, Hi En, and 崔海恩. "The Flow Interference between Two Circular Cylinders." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/60832486156815828056.

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38

Jane, Sue-June, and 詹淑菁. "Direct Numerical Simulation of Three-Dimensional Flow between two Rotating Cylinders." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/74431784392451324239.

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39

Atkins, Michael David. "Driving mechanisms of gap flow between two side-by-side circular cylinders." Thesis, 2015. http://hdl.handle.net/10539/17543.

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We present the driving mechanism of gap flow between two stationary side-by-side circular cylinders immersed in the sub-critical Reynolds number regime and its variation with gap spacing, based on steady flow characteristics. A series of experiments and numerical simulations have been performed. Results reveal that gap flow, the flow passing between the cylinders, can be classified broadly into pressure gradient and momentum driven regime, depending on the spacing ratio (T/D) where T is the transverse center-to-center spacing between the cylinders and D is the cylinder diameter. The pressure g

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40

Wang, Tse-Chuan, and 王則權. "The Numerical Study of Flows between Two Concentric Rotating Cylinders." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/49700930693593137490.

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碩士<br>國立暨南國際大學<br>土木工程學系<br>91<br>Abstract An incompressible viscous fluid motion between two concentric rotating cylinders is one of the important subjects in fluid dynamics. These flows are interesting and complex and they are still attracted many by scholars and researchers up to day. The purpose of this study is to use a numerical method to analysis and simulate the flow patterns and relevant issues of the flows between two concentric rotating cylinders. In the numerical operation, which directly solves the Navier-Stokes equations and continuity equation that are thre

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41

Chang, Yin-Chang, and 張蔭昌. "Effect of Turbulence Intensity on Flow Interference Between Two Circular Cylinders in Side-by-Side Arrangement." Thesis, 1995. http://ndltd.ncl.edu.tw/handle/74681245009751185195.

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碩士<br>國立海洋大學<br>河海工程學系<br>83<br>In this paper, we present experimental results on wake flow behind the two side-by-side arranged circular cylinders. The flow characteristics behind the cylinders are measured for the different cylinder spacings and different freestream turbulence intensities. The two cylinders spacings are 1.5D, 2D and 4D. And the approaching flows are with turbulence intensities I% of 7.38%, 8.03% and 15.86%. The Reynolds numbers Re=UD/υ≒3000. The cylinder diameter D=0.8 cm

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Zakaria, Khaled Yahia [Verfasser]. "Flow interaction and heat transfer between two cylinders in a uniform air stream / von Khaled Yahia Zakaria." 2000. http://d-nb.info/960643664/34.

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43

Peng-YuanChen and 陳鵬遠. "Analysis of Thermal Hydraulic Characteristics for Thin Film Ribbing and Taylor-Couette Flow between Two Rotating Cylinders." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/04873226353219651485.

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博士<br>國立成功大學<br>機械工程學系碩博士班<br>98<br>The ribbing phenomenon and non-uniform film thickness occurred when increasing roll speed and shrinking roll gap in roll coating process, and non-Newtonian property in coating fluid also affected the coating field. It is necessary to analysis the non-Newtonian property of coating fluid, roll speed ratio and roll gap in order to ligten the unstable ribbing. Taylor-Couette flow exists in co-axial rotating electrical equipment such as rotary blade coupling in vehical, and is burned down for high temperature. It is important to improve the thermal behavior in Ta

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44

Li, Jing-Yi, and 李兢翌. "Numerical Simulation of Two-Dimensional Flow Past Rectangular Cylinders." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/27038074670827501087.

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45

ZHAO, JIA-PING, and 趙嘉平. "Stratified flow past two cylinders in tandem arrangement -- Physical experiment." Thesis, 1993. http://ndltd.ncl.edu.tw/handle/19227885305332322204.

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46

Wang, Li-Ching, and 王立慶. "Numerical study on flow past two cylinders with different diameters." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/24365287333787690166.

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碩士<br>國立暨南國際大學<br>地震與防災工程研究所<br>98<br>This article achieves the partial grid encryption by the nest shape grid the effect. The flow field solves it because of the Navier-Stokes equation and the equation of continuity, the explanation logical process uses the method of fractional steps (Fractional Step Method). To unstable, mounts the viscosity and the incompressible flow flow field, for the solution complex boundary, by the nest shape grid explanation flow field process, obstacle of including the complex boundary by the Ravoux et al. [24] development's in inlays the law (Embedding Method) to p

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47

Chen, Po-Han, and 陳柏翰. "Collision of Two Circular Cylinders in a Viscous Incompressible Flow." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/xz5a4s.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>106<br>Problem of fluid-structure interaction is common for nature and industrial applications, and it is a difficult problem. It is also an important challenge for numerical simulation. It does not limit on one solid body for cases that solid move relatively in fluid. It would be possible to collide for multi-bodies moving in fluid. This research aims at developing a collision model with physical meaning, and applying it in simulation of fluid-structure interaction. We review several existing collision models and summarize advantages and disadvantages of eac

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48

Hung, Tzu-Wei, and 洪梓蔚. "Computation of 3-D Flow for Two aligned Circular Cylinders." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/81241461843131586584.

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碩士<br>國立成功大學<br>水利及海洋工程學系碩博士班<br>93<br>Because of the interaction of separation and multiple vortices between two circular cylinders, the flow through two aligned circular cylinders is more complex then that of a single one. This study attempts to resolve this complex flow field using the commercial software, FLUENT, since it accommodates the completely module of the Reynolds stress model (RSM) for three-dimensional turbulent flow computation. The distance to diameter ratio of the cylinder, and the Reynolds number based on approach velocity and D are the two main parameters that are concerned

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Sung, Yung-lin, and 宋央領. "Numerical simulation of flow induced vibration of two circular cylinders in shear flow." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/73405724948000738900.

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碩士<br>國立中山大學<br>機械與機電工程學系研究所<br>97<br>This research is aimed to investigate the fluid-elastic instability of the motion simulation using a single cylinder and two cylinders within the context of shear flows. T/D, shear parameter and mass ratio are parameters to be investigated. Besides, cylindrical motion treks and the amplitude are also analyzed. Continuity equation and momentum equations are solved alternatively using a CFD package, Fluent 6.3.26. The force caused by the flow interacts with the cylindrical motion. Thus Motion meshing techniques together with the cylindrical motion equations

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Huang, Po-Chuan, and 黃柏銓. "Numerical simulation of flow past two circular cylinders of different diameters." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/92124601272542619332.

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碩士<br>國立臺灣大學<br>機械工程學研究所<br>96<br>Numerical simulations with unstructured spectral element method were applied to the study of the phenomenon of cross flow around two cylinders. According to the research of Strykowski(1985), vortex shedding could be drastically inhibited with a control cylinder which in size is much smaller compared to the main cylinder. The purpose of this research is further focus on different parameters of control cylinder for drag reducing, lift increasing, and vortex inhibition. The Reynolds number of all simulations is 100. Both passive and active controls were studied.

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