Rozprawy doktorskie na temat „Flow”
Utwórz poprawne odniesienie w stylach APA, MLA, Chicago, Harvard i wielu innych
Sprawdź 50 najlepszych rozpraw doktorskich naukowych na temat „Flow”.
Przycisk „Dodaj do bibliografii” jest dostępny obok każdej pracy w bibliografii. Użyj go – a my automatycznie utworzymy odniesienie bibliograficzne do wybranej pracy w stylu cytowania, którego potrzebujesz: APA, MLA, Harvard, Chicago, Vancouver itp.
Możesz również pobrać pełny tekst publikacji naukowej w formacie „.pdf” i przeczytać adnotację do pracy online, jeśli odpowiednie parametry są dostępne w metadanych.
Przeglądaj rozprawy doktorskie z różnych dziedzin i twórz odpowiednie bibliografie.
Al-Yarubi, Qahtan. "Phase flow rate measurements of annular flows". Thesis, University of Huddersfield, 2010. http://eprints.hud.ac.uk/id/eprint/9104/.
Pełny tekst źródłaMurray, Nathan E. "Flow field dynamics in subsonic cavity flows /". Full text available from ProQuest UM Digital Dissertations, 2006. http://0-proquest.umi.com.umiss.lib.olemiss.edu/pqdweb?index=0&did=1299816381&SrchMode=1&sid=4&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1193667418&clientId=22256.
Pełny tekst źródłaBulathsinghala, Dinitha. "Afterbody vortex flows and passive flow control". Thesis, University of Bath, 2019. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767593.
Pełny tekst źródłaLangkau, Katharina. "Flows over time with flow dependent transit times". [S.l.] : [s.n.], 2003. http://deposit.ddb.de/cgi-bin/dokserv?idn=968912656.
Pełny tekst źródłaCostigan, G. "Flow pattern transitions in vertical gas - liquid flows". Thesis, University of Oxford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361925.
Pełny tekst źródłaGürcan, Fuat. "Flow bifurcations in rectangular, lid-driven, cavity flows". Thesis, University of Leeds, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.425523.
Pełny tekst źródłaGissen, Abraham Naroll. "Active flow control in high-speed internal flows". Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54865.
Pełny tekst źródłaPaleo, Cageao Paloma. "Fluid-particle interaction in geophysical flows : debris flow". Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/27808/.
Pełny tekst źródłaMehendale, Aditya. "Coriolis mass flow rate meters for low flows". Enschede : University of Twente [Host], 2008. http://doc.utwente.nl/60164.
Pełny tekst źródłaLemée, Thomas. "Shear-flow instabilities in closed flow". Thesis, Paris 11, 2013. http://www.theses.fr/2013PA112038.
Pełny tekst źródłaThis study focuses on the understanding of the physics of different instabilities in driven cavities, specifically the lid-driven cavity and the thermocapillarity driven cavity where flow in an incompressible fluid is driven either due to one or many moving walls or due to surface stresses that appear from surface tension gradients caused by thermal gradients. A spectral code is benchmarked on the well-studied case of the lid-cavity driven by one moving wall. In this case, It is shown that the flow transit form a steady regime to unsteady regime beyond a critical value of the Reynolds number. This work is the first to give a physical interpretation of the non-monotonic evolution of the critical Reynolds number versus the size of the cavity. When the fluid is driven by two facing walls moving in the same direction, the cavity possesses a plane of symmetry particularly sensitive. Thus, asymmetrical solutions can be observed in addition to the symmetrical solution above a certain value of the Reynolds number. The oscillatory transition between the symmetric solution and asymmetric solutions is explained physically by the forces in competition. In the asymmetric case, the change of the topology allows the flow to remain steady with increasing the Reynolds number. When the equilibrium is lost, an instability manifests by the appearance of an oscillatory regime in the asymmetric flow. In a rectangular cavity thermocapillary with a free surface, Smith and Davis found two types of thermal convective instabilities: steady longitudinal rolls and unsteady hydrothermal waves. The appearance of its instability has been highlighted repeatedly experimentally and numerically. While applications often involve more than a free surface, it seems that there is little knowledge about the thermocapillary driven flow with two free surfaces. A free liquid film possesses a particular plane of symmetry as in the case of the two-sided lid-driven cavity. A linear stability analysis for the free liquid film with two velocity profiles is presented with various Prandtl numbers. Beyond a critical Marangoni number, it is observed that these basic states are sensitive to four types of thermal convective instabilities, which can keep or break the symmetry of the system. Mechanisms that predict these instabilities are discovered and interpreted according to the value of the Prandtl number of the fluid. Comparison with the work of Smith and Davis is made. A direct numerical simulation is done to validate the results obtained with the linear stability analysis
KASLIWAL, AMIT. "FLOW SEPARATION CONTROL FOR CYLINDER FLOW AND CASCADE FLOW USING GENERATOR JETS". University of Cincinnati / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1141413192.
Pełny tekst źródłaLaurantzon, Fredrik. "Flow Measuring Techniques in Steady and Pulsating Compressible Flows". Licentiate thesis, KTH, Mekanik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-26344.
Pełny tekst źródłaQC 20101208
Wang, Yueping. "Flow-dependent corrosion in turbulent pipe flow". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/nq23972.pdf.
Pełny tekst źródłaBoulay, Fabienne. "Suspension-flow modeling : curvilinear flows and normal stress differences". Thesis, Georgia Institute of Technology, 1997. http://hdl.handle.net/1853/11689.
Pełny tekst źródłaLawless, Mark R. "Junction flow systems : mechanics and implications for natural flows". Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.396912.
Pełny tekst źródłaBhattacharyya, A. Acosta Allan J. "Internal flows and force matrices in axial flow inducers /". Diss., Pasadena, Calif. : California Institute of Technology, 1994. http://resolver.caltech.edu/CaltechETD:etd-03012005-141633.
Pełny tekst źródłaLASAGNA, DAVIDE. "Flow physics and control of trapped vortex cell flows". Doctoral thesis, Politecnico di Torino, 2013. http://hdl.handle.net/11583/2518621.
Pełny tekst źródłaKasliwal, Amit. "Flow separation control for cylinder flow and cascade flow using vortex generator jets". Cincinnati, Ohio : University of Cincinnati, 2006. http://www.ohiolink.edu/etd/view.cgi?acc%5Fnum=ucin1141413192.
Pełny tekst źródłaTitle from electronic thesis title page (viewed Apr. 18, 2006). Includes abstract. Keywords: Flow Separation; Low Pressure Turbine Cascade; LPT Cascade; Flow over Cylinder; Vortex Generator Jets; VGJ; Multiblock Grid. Includes bibliographical references.
Abdelwahab, Ahmed Farouk. "Through-flow model for fan/flow-resistance configurations". Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2002. http://wwwlib.umi.com/cr/syr/main.
Pełny tekst źródłaSomoano, Rodríguez Miguel. "Performance and flow dynamics in cross-flow turbines". Doctoral thesis, Universitat Rovira i Virgili, 2018. http://hdl.handle.net/10803/553240.
Pełny tekst źródłaEsta tesis doctoral presenta el estudio que el autor realizó para comprender el efecto del ángulo pitch de la pala sobre las interacciones pala-estela que tienen lugar dentro del rotor y, por lo tanto, sobre el rendimiento de una turbina de de flujo cruzado con tres palas rectas. En primer lugar, hemos estudiado experimentalmente el rendimiento de este tipo de turbina en un túnel de viento de capa límite. Lo hicimos para diferentes pitches fijos de las palas, y con diferentes números de Reynolds basados en el diámetro de la turbina que cubren la región de transición en la que el par producido por las palas superó al par resistivo opuesto. La forma y los valores de la curva de rendimiento cambiaron drásticamente con sólo un incremento del ángulo pitch fijo. Cuanto mayor sea el número de Reynolds, menor es el tip speed ratio óptimo y más hacia el toe-out se mueve el ángulo pitch ideal. Posteriormente, estudiamos experimentalmente la dinámica de flujo dentro del rotor para diferentes pitches de la pala en un tanque de agua con carro, usando Digital Particle Image Velocimetry. Los ensayos se realizaron a un número de Reynolds basado en el diámetro de la turbina constante, y para un rango de tip speed ratios. La atención se centra en el análisis de las interacciones pala-estela dentro del rotor. Ángulos toe-in y excesivos toe-out se han asociado a bajos rendimientos de este tipo de turbinas. La investigación nos ha permitido relacionar las interacciones pala-estela con las diferencias de rendimiento en este tipo de turbinas, en función del tip speed ratio operativo y del ángulo pitch de la pala.
This doctoral thesis presents the study that the author have carried out in order to understand the effect of the blade pitch angle on the blade-wake interactions that take place inside the rotor, and hence on the performance of a three straight bladed cross-flow turbine. Firstly, we have experimentally studied the performance of this kind of turbine in a boundary layer wind tunnel. We did it for different fixed blade pitches, and at different turbine diameter Reynolds numbers covering the transitional region in which the torque produced by the blades overtook the opposed resistive torque. Shape and values of the performance curve changed drastically with just an increment of the fixed pitch angle. The higher the Reynolds number, the lower the optimal tip speed ratio and the more towards toe-out the ideal pitch angle is moved. Afterwards, we study experimentally the flow dynamics inside the rotor for different blade pitches in a water towing tank, using planar Digital Particle Image Velocimetry. Tests were made at a constant turbine diameter Reynolds number, and for a range of tip speed ratios. The focus is given to the analysis of the blade-wake interactions inside the rotor. Toe-in and excessive toe-out angles have been associated to low performances of this type of turbines. The investigation has allowed us to relate the blade-wake interactions with the performance differences in this type of turbines, as a function of both the operational tip speed ratio and the blade pitch angle.
Engin, Erjona. "Dynamic Analysis Of Flow In Two Dimensional Flow". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609374/index.pdf.
Pełny tekst źródłave (KL) decomposition is widely used in computational fluid dynamics to achieve reduced storage requirements or construction of relatively low-dimensional models. In this study the KL basis is extracted from the flow field obtained from the direct numerical simulation of the Poiseuille flow.
Fraunhofer, Wolfgang. "Asymmetrical flow field-flow-fractionation in pharmaceutical analytics". Diss., lmu, 2003. http://nbn-resolving.de/urn:nbn:de:bvb:19-84503.
Pełny tekst źródłaSu, Chih-Chun. "Flow characteristics and performance of mixed-flow turbines". Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416862.
Pełny tekst źródłaManshoor, Bukhari bin. "Fractal flow conditioners for orifice plate flow meters". Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.574554.
Pełny tekst źródłaFERREIRA, ANA LUISA AULER DA SILVA. "ULTRASONIC TECHNOLOGY IN FLOW MEASUREMENT OF INCOMPRESSIBLE FLOW". PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2010. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=16724@1.
Pełny tekst źródłaThe present work evaluates the influence of the installation in ultrasonic flow meters, using numerical simulation. Ultrasonic meter characteristics and issues about the flow modeling configuration that may influence the numerical results were presented. Procedures used to draw the lines and to calculate the meter mean velocity and the measurement error were described. The effect of one curve, two curves at the same plane and two curves at perpendicular planes at 1, 2, 3, 4, 5 and 8-path meters with different arrangements were shown. Also, the effect of one step at the results of ultrasonic meters was analyzed by the simulation of 1 to 5-paths meters and by the calibration of a 3 path meters. Factors calculated by the ratio between the velocity indicated by the meter in a certain position and the velocity that would be indicated by the meter in a fully developed flow. Just after one curve, the factors for 1-path meters varied from 0.40 to 1.28; for 3-path meters, from 0.5 to 1.42; and for 4 and 5-path meters, the differences were higher than 10%. At 20D downstream of one curve, 2 and 3-path meters indicated factors equal to 0.9 and 1.08; and 4 and 5-path meters, factors equal to 0.99 to 1.04. The diagnostic parameters analyzed were not efficient and their use is not recommended. By the simulation, a convergent step of -4% generates differences about 0.3% for 3-path meters and for a divergent step -f 4%, the differences are higher than 0.5%. The differences between the calibration results with and without steps were from 0.18% to 0.3%. The numerical simulation is a useful tool in the ultrasonic meter analyses and showed the sensitivity of these meters to velocity profile variations.
Sobek, Daniel. "Microfabricated fused silica flow chambers for flow cytometry". Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10262.
Pełny tekst źródłaIncludes bibliographical references (leaves 107-116).
by Daniel Sobek.
Ph.D.
Ariyoshi, Gen. "Flow Characteristics of Lead-Bismuth Two-phase Flow". Kyoto University, 2019. http://hdl.handle.net/2433/242325.
Pełny tekst źródłaPal, S. "Understanding flow of solid in continuous flow reactors". Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 2019. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/5989.
Pełny tekst źródłaFält, Åsa. "Flow Office". Thesis, Linnéuniversitetet, Institutionen för design (DE), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-43554.
Pełny tekst źródłaArmstrong, Holly. "Natural Flow". VCU Scholars Compass, 2006. http://scholarscompass.vcu.edu/etd/694.
Pełny tekst źródłaDoup, Benjamin. "Experimental Investigation of Flow Structure Development in Air-water Two-phase Flows". The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1332514704.
Pełny tekst źródłaMuld, Tomas W. "Analysis of Flow Structures in Wake Flows for Train Aerodynamics". Licentiate thesis, KTH, Mechanics, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12746.
Pełny tekst źródłaTrain transportation is a vital part of the transportation system of today anddue to its safe and environmental friendly concept it will be even more impor-tant in the future. The speeds of trains have increased continuously and withhigher speeds the aerodynamic effects become even more important. One aero-dynamic effect that is of vital importance for passengers’ and track workers’safety is slipstream, i.e. the flow that is dragged by the train. Earlier ex-perimental studies have found that for high-speed passenger trains the largestslipstream velocities occur in the wake. Therefore the work in this thesis isdevoted to wake flows. First a test case, a surface-mounted cube, is simulatedto test the analysis methodology that is later applied to a train geometry, theAerodynamic Train Model (ATM). Results on both geometries are comparedwith other studies, which are either numerical or experimental. The comparisonfor the cube between simulated results and other studies is satisfactory, whiledue to a trip wire in the experiment the results for the ATM do not match.The computed flow fields are used to compute the POD and Koopman modes.For the cube this is done in two regions of the flow, one to compare with a priorpublished study Manhart & Wengle (1993) and another covering more of theflow and especially the wake of the cube. For the ATM, a region containing theimportant flow structures is identified in the wake, by looking at instantaneousand fluctuating velocities. To ensure converged POD modes two methods toinvestigate the convergence are proposed, tested and applied. Analysis of themodes enables the identification of the important flow structures. The flowtopologies of the two geometries are very different and the flow structures arealso different, but the same methodology can be applied in both cases. For thesurface-mounted cube, three groups of flow structures are found. First groupis the mean flow and then two kinds of perturbations around the mean flow.The first perturbation is at the edge of the wake, relating to the shear layerbetween the free stream and the disturbed flow. The second perturbation isinside the wake and is the convection of vortices. These groups would then betypical of the separation bubble that exists in the wake of the cube. For theATM the main flow topology consists of two counter rotating vortices. Thiscan be seen in the decomposed modes, which, except for the mean flow, almostonly contain flow structures relating to these vortices.
QC 20100518
Gröna Tåget
Robinson, Christopher J. "End-wall flows and blading design for axial flow compressors". Thesis, Cranfield University, 1991. http://dspace.lib.cranfield.ac.uk/handle/1826/6929.
Pełny tekst źródłaLovick, Jonathon. "Horizontal, oil-water flows in the dual continuous flow regime". Thesis, University College London (University of London), 2004. http://discovery.ucl.ac.uk/1383486/.
Pełny tekst źródłaWalsh, Joseph Anthony. "Secondary flows and inlet skew in axial flow turbine cascades". Thesis, Durham University, 1987. http://etheses.dur.ac.uk/6659/.
Pełny tekst źródłaYan, Baoshe. "Fluid flow induced by oscillating bodies and flows in cyclones". Thesis, University of Leeds, 1991. http://etheses.whiterose.ac.uk/435/.
Pełny tekst źródłaYato, Hiroki. "Flow pattern transition in curvilinear shear flows of viscoelastic fluids". 京都大学 (Kyoto University), 2010. http://hdl.handle.net/2433/131910.
Pełny tekst źródłaMuhamedsalih, Yousif. "Two-phase flow meter for determining water and solids volumetric flow rate in vertical and inclined solids-in-water flows". Thesis, University of Huddersfield, 2014. http://eprints.hud.ac.uk/id/eprint/23741/.
Pełny tekst źródłaMushyam, Aditya. "Effects of flow control on flow past bluff bodies". Doctoral thesis, Universitat Politècnica de Catalunya, 2016. http://hdl.handle.net/10803/398031.
Pełny tekst źródłaL'objectiu de aquesta tesi doctoral, "Effects offlow control on flow past bluff bodies", és estudiar i analitzar els efectes del control de flux sobre diferents aspectes del flux al voltant de cossos genèrics, Bluff bodies. Les tècniques de control de flux estan en la actualitat sota recerca a nivell mundial, doncs és necessari estudiar l'efectivitat del flux aportat sobre les propietats i els patrons vermiculars del corrent de flux principal. El present treball està inspirat en la indústria del automòbil, així l’anàlisi del flux sobre un esgraó o be una superfície inclinada, ha de permetre entendre les característiques de l'estela de flux a la part del darrera de un vehicle automòbil. Aquest estudi es especialment rellevant quan es considera que una quantitat important de l'energia necessària per desplaçar un vehicle es dissipa gràcies a les estructures vorticulars formades a la part de darrera del vehicle. En aquesta tesi s'han examinat diverses possibilitats de aplicació de les tècniques de control actiu de flux per millorar la efectivitat a l'hora de incrementar la eficiència aerodinàmica sobre cossos genèrics, Bluff bodies. La finalitat bàsica de aquest estudi, és reduir les forces de arrossegament sobre cossos genèrics, gràcies a la determinació de la tècnica de control de fluid més efectiva i la seva implementació pràctica. Dues tècniques diferents de control actiu de fluid han sigut avaluades en aquesta tesi, la definida per un actuador amb flux net nul, "Zero Not Mass Flow Actuator", i la definida per la utilització de un actuador amb un flux net positiu, o be actuador fluídic, "Fluidic Actuator". Les característiques de la capa límit laminar i turbulenta han sigut analitzades així com la efectivitat del control de flux respecte el desplaçament aigües avall del despreniment de la capa límit. Tots els programes utilitzats per toles les simulacions numèriques han sigut creats per el autor de la tesi en llenguatge C, per el que fa referència a les simulacions tridimensionals en règim turbulent, el model de turbulència LES implementat
Bogner, Christina. "Analysis of flow patterns and flow mechanisms in soils". Thesis, Bayreuth Bayreuth Center of Ecology and Environmental Research, 2009. http://d-nb.info/997214058/34.
Pełny tekst źródłaKim, Youngho. "Online traffic flow model applying dynamic flow density relations". [S.l. : s.n.], 2002. http://deposit.ddb.de/cgi-bin/dokserv?idn=964751909.
Pełny tekst źródłaÅsén, Per-Olov. "Stability of plane Couette flow and pipe Poiseuille flow". Doctoral thesis, KTH, Numerisk Analys och Datalogi, NADA, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4368.
Pełny tekst źródłaQC 20100825
Sundström, Elias. "Centrifugal compressor flow instabilities at low mass flow rate". Licentiate thesis, KTH, Mekanik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-184869.
Pełny tekst źródłaQC 20160406
Wong, Wai-Lid. "Flow development and mixing in three phase slug flow". Thesis, Imperial College London, 2003. http://hdl.handle.net/10044/1/7780.
Pełny tekst źródłaWongl, Li Shing. "Flow and heat transfer in buoyancy induced rotating flow". Thesis, University of Sussex, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250118.
Pełny tekst źródłaBasnet, Keshav. "Flow around porous barriers: fundamental flow physics and applications". Diss., University of Iowa, 2015. https://ir.uiowa.edu/etd/1824.
Pełny tekst źródłaKerekes, Rudolf. "Electrolyte flow rate control for Hydrogen Bromine Flow Batteries". Thesis, KTH, Skolan för industriell teknik och management (ITM), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-263240.
Pełny tekst źródłaBehovet av energilagringslösningar blev mer betydande med den ökande penetrationen av förnybara energikällor i elnätet. Under de senaste decennierna har flödesbatterierna fått ökad uppmärksamhet. De harflera fördelar jämfört med konventionella batteriteknologier. Då väte och brom finns i stora mängder i haven, erbjuder vätebromflödesbatterier en billig lösning för energilagring genom att använda globalt rikligt förekommande material. Denna studie genomfördes för att ta reda på sambandet mellan elektrolytflödeshastighet och elektrokemisk cellprestanda och för att ge ett förslag för dynamisk flödeshastighetskontroll för att maximera batterisystemets prestanda. Först byggdes en teoretisk modell för att beskriva systemets beteende under olika förhållanden. Emellertid ledde bristen på information om parametrarna forskningen mot experimentell analys. Ett småskaligt system med celleffektintervall från 10till 14 W och pumpeffektintervall på 2.6 till 6.8 W byggdes för experimenten för att analysera celleffekten vid olika flödeshastighetsvärden (122 ml / min, 185 ml / min och 230 ml / min). Syftet var också att observera vinsterna med att använda dynamisk flödeshastighet (122 ml / min och 230 ml / min använd vidspecifika perioder av cyklerna). Resultaten visar att för småskaliga system finns det ingen nettopositiv energivinst på grund av batteriets lilla effekt jämfört med pumpens effekt. Det fanns emellertid förbättringari batterikapacitet med en ökning på 28% och i Coulombic effektivitet med en ökning på 2.47% om den större flödeshastigheten användes. Det uppnåddes även en energibesparing på 55% om den dynamiska flödeshastigheten användes istället för konstant maximal flödeshastighet. Dessutom utformades ett storskaligt system som skulle kunna integrera ett PID-kontrollkoncept för dynamisk flödeshastighetskontroll i kW-skalbatterier. Ytterligare arbete kommer att krävas för att bygga och testa det föreslagna storskaliga systemet, som tenderar att modellera ett kommersiellt vätebromflödesbatteri.
Salvini, Fabio <1992>. "Flow logic based information flow analysis of Android applications". Master's Degree Thesis, Università Ca' Foscari Venezia, 2018. http://hdl.handle.net/10579/12996.
Pełny tekst źródłaKosakowski, Cindy. "Betydelsen av flow i bildskapande och pedagogers betydelse för flow : En uppsats inom bildpedagogik om flow och kreativitet och vilka förutsättningar som gynnar flow". Thesis, Högskolan i Gävle, Avdelningen för kultur-, religions- och utbildningsvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-14630.
Pełny tekst źródłaChen, Jui-Yen, i 陳睿彥. "Flow-Depth Velocity Distribution Equationsfor Open Channel Flows". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/49242144806671080582.
Pełny tekst źródła國立成功大學
水利及海洋工程學系碩博士班
91
The log-low flow-depth velocity distribution equations for open channel flow and the Coles’ wake-flow function were reviewed wake-strength coefficient in the wake function at various flow conditions were compared. The result reveals that the values of are presented by previous investigators between -0.27 and 0.65. It is also found that Cloes’s revised wake-flow function can not well describe the velocity distributions for some open channel flows which are influenced by the pressure gradient and the side-wall-effects. We propose a method to overcome the problem. The velocity distribution is divided into upper region and lower region at the basis on the depth where the maximum velocity. When the two coefficients are the same which to be equal to the Cloes revised wake-flow function. Comparison of the proposed double-layer velocity distribution with measured data by Cloemen(1981) and Kirkgoz and Ardiclikglu(1997). The results show that the present proposed method can well describe the velocity distributions, with between 0.9 and 1.6 and between -0.02 and 0.69. Besides, the modified functions for the power-low equation are also investigated in the present study. A modified function F(y/ )= is proposed for the power-low velocity distribution, and compared with the measured data. It shows that the revised power-low equation can well describe the velocity distribution. Based on Coleman’s data , and the velocity correction is between 0.15 and 0.28, and proportional with the vertically averaged volumetric sediment concentration.