Дисертації з теми "Turbine disk"
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Hunter, William. "Actuator disk methods for tidal turbine arrays." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:bf8e95df-9e67-4c89-8d9d-1a608a8be0f4.
Повний текст джерелаMaidana, Cristiano Frandalozo. "Desenvolvimento de turbinas de múltiplos discos : estudo de modelos analíticos e análise experimental." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/127907.
Повний текст джерелаThis work is performed conception, design, construction and testing of multiple-disks turbines (MDTs) for the verification of key parameters and methodologies used for the design and analysis of machine as well as consider ways to equipment optimization. Thus, a multiple-disk turbine is constructed and tested with different impeller configurations, in a test rig especially constructed and dimensioned for this purpose, besides the implementation of the analytical methods in software Engineering Equation Solver (ESS). Thus, a comparison between the experimental results obtained by Rice and analytical models available, shows that the friction factor model (FF) is what best represents the operation of the equipment, and is the most versatile of the tested methods, allowing the turbine is sized and optimized for various building configurations. Since the experimental results obtained with one of the turbine prototypes built and operated with compressed air, show that with simple modifications of geometry, configuration and surface finish of the disks that make up the rotor, it is possible to increase the isentropic efficiency by up to 35% compared the standard turbine rotor mounted with the default configuration (flat disks), without causing damage in some of the major benefits of using this type of equipment. The experimental results also show that efficiency decreases significantly with increasing clearance between the outer radius of the rotor and the internal part of the housing.
Romanoski, Glenn Roy. "The fatigue behavior of small cracks in aircraft turbine disk alloys." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/32577.
Повний текст джерелаIncludes bibliographical references (leaves 245-258).
by Glenn R. Romanoski, Jr.
Ph.D.
Khoramzad, Elham. "Fretting fatigue life analysis for a gas turbine compressor blade-disk material combination." Thesis, KTH, Hållfasthetslära, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284357.
Повний текст джерелаOo, Htet Htet Nwe. "Actuator Disk Theory for Compressible Flow." DigitalCommons@CalPoly, 2017. https://digitalcommons.calpoly.edu/theses/1727.
Повний текст джерелаCigeroglu, Ender. "Development of microslip friction models and forced response prediction methods for frictionally constrained turbine blades." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1181856489.
Повний текст джерелаAkagi, Raymond. "Ram Air-Turbine of Minimum Drag." DigitalCommons@CalPoly, 2021. https://digitalcommons.calpoly.edu/theses/2261.
Повний текст джерелаForan, Derek. "Experimental and Numerical Modeling of a Tidal Energy Channeling Structure." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/32387.
Повний текст джерелаLošák, Petr. "Optimalizace modálního tlumení lopatek vysokotlakých stupňů parních turbín." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-233951.
Повний текст джерелаPishva, S. M. R. (S Mohammed Reza) Carleton University Dissertation Engineering Mechanical. "Rejuvenation of gas turbine discs." Ottawa, 1988.
Знайти повний текст джерелаФілімоніхін, Г. Б., А. Ю. Невдаха, G. Filimonikhin та A. Nevdakha. "Технологія складання роторів барабанно-дискової конструкції методом двох пробних складань із заміром биттів на призмах". Thesis, Львівська політехніка, 2011. http://dspace.kntu.kr.ua/jspui/handle/123456789/6158.
Повний текст джерелаНевдаха, А. Ю., Г. Б. Філімоніхін, A. Nevdakha та G. Filimonikhin. "Використання 3D моделі ротора барабанно-дискового типа для апробації технології складання роторів ГТД методом двох пробних складань". Thesis, ЧДТУ, 2012. http://dspace.kntu.kr.ua/jspui/handle/123456789/6159.
Повний текст джерелаНевдаха, А. Ю., та A. Nevdakha. "Вплив на похибку визначення оптимальних кутів повороту деталей ротора ГТД неточностей заміру биття його контрольних поверхонь". Thesis, КІНПАТРІ ЛТД, 2012. http://dspace.kntu.kr.ua/jspui/handle/123456789/6161.
Повний текст джерелаНевдаха, А. Ю., та A. Nevdakha. "Технологічне забезпечення якості складання між опорних роторів барабанно-дискового типу методом двох пробних складань". Thesis, ПП ""Екслюзив-Систем", 2013. http://dspace.kntu.kr.ua/jspui/handle/123456789/6160.
Повний текст джерелаCarvalho, José Filipe Trilha de. "Predição numérica do torque em uma turbina tesla com rotor estacionário." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2018. http://hdl.handle.net/10183/174394.
Повний текст джерелаThe present study presents the numerical analysis of the working fluid flow in a Tesla turbine with stationary rotor. The mesh independence study predicts the use of approximately 2 million volumes, with similar performance to those most refined meshes, presenting a significant saving of computational effort. Several turbulence models of the RANS approach are applied with the aim of establishing a methodology for future studies with experimental data. The different turbulence models provide very close results for turbine torque prediction, with a variation below 1% between them. Air is used as working fluid at a pressure of 2.5 bar gauge, reaching velocities around 310 m.s-1 in the throat region of the nozzle and in the free jet region, just after the discharge of the nozzle. This condition allows to state that the turbine works in its maximum flow condition, with the Mach number close to unitary value, with a compressible flow The velocity in the inner region between disks reaches 100 m.s-1. In the absence of experimental data and literature, a parametric study with different operating conditions of the turbine is performed in order to verify the quality of the simulated results. The mass flow rate is estimated based on the temperature and pressure of the working fluid, modeled as the ideal gas. The results predicted by the numerical model for the torque in the rotor is 2.09 N.m with gauge pressure of 1.5 bar and a mass flow rate of 33.58 g/s, 2.22 N.m with gauge pressure of 2.0 bar and a mass flow rate of 40.29 g/s, and 2.38 N.m with gauge pressure of 2.5 bar and flow mass of 53.73 g/s. The temperature was 300 K kept constant for all three cases. For the analyzed cases, the Mach number in the throat of the convergent nozzle showed a tendency to the unit value, ranging from 0,7 to 1,0 which suggests that the nozzle is working in its maximum flow condition of the working fluid.
Michelet, Nicolas. "Modélisation numérique de l'impact d'une ferme hydroliennes sur les conditions hydrodynamiques et sédimentaires du Passage du Fromveur en Mer d'Iroise." Thesis, Normandie, 2018. http://www.theses.fr/2018NORMC237/document.
Повний текст джерелаIn spite of a present only emerging operational development along the coast of France, the extraction of the kinetic energy of tidal currents by turbines appears as a promising solution to contribute locally to the energetic transition of insulary territories that are not connected to the continental electricity grid, with limited power needs, and are located in protected and touristic natural areas with a visual heritage to preserve. This doctoral thesis was devoted to the three-dimensional numerical modelling of the hydrodynamic and sedimentary impacts induced by horizontal-axis turbines deployed within the pilot site of the Fromveur Strait, in the natural marine Iroise park, off western Brittany. Numerical simulations are performed with the oceanographic model ROMS (Regional Ocean Modelling System) modified to integrate a theoretical actuator-disk sub-model that assimilates the device to a porous disc opposing the flow with a force equal to the turbine’s thrust. This method was assessed against laboratory measurements within the wake of a porous disc with a diameter (D) of 0.1 m immersed in a permanent flow. A spatial resolution as small as D/10 was required to reproduce observations. After a numerical convergence study at full scale, ROMS was applied, using a nested grid approach targetted towards the Fromveur Strait, to examine wake interactions and cumulative effects within an array of height turbines of 10-m-diameter expected to fulfill the energy need of the island of Ushant. The array layout followed the commonly recommended staggered configuration with respective longitudinal and lateral spacings of 10D and 5D. During spring tidal conditions, the misalignment of the peak flood flow enhanced the wake interactions, reducing by about 15% the array power production in comparison with the peak ebb flow. This lack of power production capacity was lowered to 2% by reducing the lateral spacing to 3D. ROMS predictions were finally exploited to address the influence of this last array of turbines on the local sediment dynamics. Main effects were expected on (i) the deposition of sediments with diameter over 2 mm within the turbine wakes and (ii) the setting in motion of gravels with a diameter of 5 cm between the wakes
Chen, J. H. "Oxidation of nickel-base superalloys for turbine disc and advanced turbine blade applications." Thesis, University of Cambridge, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.597544.
Повний текст джерелаChang, Min Carleton University Dissertation Engineering Mechanical. "Damage tolerance of Inconel 718 turbine disc material." Ottawa, 1991.
Знайти повний текст джерелаMohamad, Abdulwahed Amin. "Dynamic characteristics of rotating shrouded-bladed-disc." Thesis, University of Surrey, 1986. http://epubs.surrey.ac.uk/847813/.
Повний текст джерелаPang, Hon Tong. "Effect of microstructure variation on turbine disc fatigue lives." Thesis, University of Southampton, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.274024.
Повний текст джерелаWilson, Alison Sarah. "Stability of nickel-base superalloys for turbine disc applications." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/279061.
Повний текст джерелаYan, Huiyu. "Co-Al-W based alloys for turbine disc applications." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/30710.
Повний текст джерелаGhaem, Sigarchian Sara. "Modeling and Analysis of a Hybrid Solar-Dish Brayton Engine." Thesis, KTH, Kraft- och värmeteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-104425.
Повний текст джерелаBüche, Dirk [Verfasser]. "Multi-Objective Evolutionary Optimization of Gas Turbine Components / Dirk Büche." Aachen : Shaker, 2004. http://d-nb.info/117053208X/34.
Повний текст джерелаSkelton, Daniel Kenneth. "High temperature fatigue crack propagation of a turbine disc alloy." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621066.
Повний текст джерелаCarter, Jace A. "EFFECT OF MATERIAL ANOMALIES ON FATIGUE LIFE OF TURBINE DISKS." Wright State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=wright1316211638.
Повний текст джерелаOlafsson, Sveinn V. "Random vibrations of bladed-disk assembly under cyclostationary excitation." Thesis, Virginia Tech, 1988. http://hdl.handle.net/10919/43261.
Повний текст джерелаMaster of Science
Ivanell, Stefan S. A. "Numerical computations of wind turbine wakes." Doctoral thesis, Stockholm : Royal Institute of Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9916.
Повний текст джерелаPatounas, Dimitrios S. "Disc heat transfer in gas turbine H.P. compressor internal air systems." Thesis, University of Sussex, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.444011.
Повний текст джерелаShen, Gangshu. "Modeling microstructural development in the forging of Waspaloy turbine engine disks /." Connect to resource, 1994. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1193083993.
Повний текст джерелаBradley, Christopher Michael. "Microstructural characterization and heat treatment of A-286 turbine buckets." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
Повний текст джерелаManning, Elizabeth Phillips Hughes. "Development of a polycrystalline Ni base superalloy for gas turbine disc application." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246610.
Повний текст джерелаHunt, David W. "The stability & mechanical properties of a nickel-base turbine disc alloy." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.404302.
Повний текст джерелаCrudden, D. J. "Alloys-by-design : applications to polycrystalline nickel superalloys for turbine disc applications." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:b60e1854-cae4-4dd3-8d6f-cec1351e4c17.
Повний текст джерелаOdemark, Ylva. "Wind-turbine wake flows - Effects of boundary layers and periodic disturbances." Doctoral thesis, KTH, Strömningsfysik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-144475.
Повний текст джерелаQC 20140424
Eskner, Mats. "Mechanical Behaviour of Gas Turbine Coatings." Doctoral thesis, KTH, Materials Science and Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3776.
Повний текст джерелаCoatings are frequently applied on gas turbine components inorder to restrict surface degradation such as corrosion andoxidation of the structural material or to thermally insulatethe structural material against the hot environment, therebyincreasing the efficiency of the turbine. However, in order toobtain accurate lifetime expectancies and performance of thecoatings system it is necessary to have a reliableunderstanding of the mechanical properties and failuremechanisms of the coatings.
In this thesis, mechanical and fracture behaviour have beenstudied for a NiAl coating applied by a pack cementationprocess, an air-plasma sprayed NiCoCrAlY bondcoat, a vacuumplasma-sprayed NiCrAlY bondcoat and an air plasma-sprayed ZrO2+ 6-8 % Y2O3topcoat. The mechanical tests were carried out ata temperature interval between room temperature and 860oC.Small punch tests and spherical indentation were the testmethods applied for this purpose, in which existing bending andindentation theory were adopted for interpretation of the testresults. Efforts were made to validate the test methods toensure their relevance for coating property measurements. Itwas found that the combination of these two methods givescapability to predict the temperature dependence of severalrelevant mechanical properties of gas turbine coatings, forexample the hardness, elastic modulus, yield strength, fracturestrength, flow stress-strain behaviour and ductility.Furthermore, the plasma-sprayed coatings were tested in bothas-coated and heat-treated condition, which revealedsignificant difference in properties. Microstructuralexamination of the bondcoats showed that oxidation with loss ofaluminium plays an important role in the coating degradationand for the property changes in the coatings.
Keywords:small punch test, miniaturised disc bendingtests, spherical indentation, coatings, NiAl, APS-NiCoCrAlY,VPS-NiCrAlY, mechanical properties
Li, Zhisong. "Advanced Computational Modeling for Marine Tidal Turbine Farm." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1337889611.
Повний текст джерелаBlackmore, Tom. "Grid generated turbulence and actuator disc representations of tidal turbines." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/361942/.
Повний текст джерелаDelhelay, Davinder Singh. "Nonlinear finite element analysis of the coupled thermomechanical behaviour of turbine disc assemblies." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0001/MQ46072.pdf.
Повний текст джерелаOng, C.-L. "Computation of fluid flow and heat transfer in rotating disc-systems." Thesis, University of Sussex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233697.
Повний текст джерелаRaub, Corey Bevan. "Geometric analysis of axisymmetric disk forging." Ohio : Ohio University, 2000. http://www.ohiolink.edu/etd/view.cgi?ohiou1172778393.
Повний текст джерелаMuller, Yann-Aël. "Etude du méandrement du sillage éolien lointain dans différentes conditions de rugosité." Thesis, Orléans, 2014. http://www.theses.fr/2014ORLE2040/document.
Повний текст джерелаThe phenomenon known as meandering describes the unsteady trajectory variations of the wake of a wind turbine. This phenomenon is responsible for specific mechanical stresses on turbines positioned in the wake of other turbines. As such, this phenomenon must be accounted for in the design and operation of wind turbine plants.This work uses numerical fluid simulation and wind tunnel testing in order to study the meandering of the wake of a wind turbine. The subject is discussed in two parts. The first part discusses the modeling of the atmospheric boundary layer, with a focus on the large scales of the atmospheric turbulence. The second part is a study of the behavior of the wake of an actuator disc model in atmospheric wind conditions.Both parts include experimental and numerical work. The numerical simulation of the atmospheric boundary layer involves the generation of synthetic turbulent velocity time series by mean of a stochastic technique developed during this thesis, to which a chapter is dedicated.One of the main results of this work is that the meandering is highly correlated with the large scales of the atmospheric turbulence
Hasselqvist, Magnus. "Aspects of creep-fatigue in gas turbine hot parts /." Linköping : Univ, 2001. http://www.bibl.liu.se/liupubl/disp/disp2001/tek678s.pdf.
Повний текст джерелаAbdul, Rahman Anas. "Numerical modelling of full scale tidal turbines using the actuator disc approach." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31246.
Повний текст джерелаConnor, Leigh. "The development of a dual microstructure heat treated Ni-base superalloy for turbine disc applications." Thesis, University of Cambridge, 2009. https://www.repository.cam.ac.uk/handle/1810/252160.
Повний текст джерелаKearsey, Richard M. "Development and characterization of a damage-tolerant microstructure for a Ni-base turbine disc alloy." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0022/MQ52391.pdf.
Повний текст джерелаFleury, Rodolfo Miguel Nogueira. "Investigation of fretting fatigue in turbine fir tree blade to disc joints at high temperature." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:9c030512-cc59-46f0-bd88-e81d85dedd4b.
Повний текст джерелаEveritt, Stewart. "Developments in advanced high temperature disc and blade materials for aero-engine gas turbine applications." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/348897/.
Повний текст джерелаKearsey, Richard M. (Richard Michael) Carleton University Dissertation Engineering Mechanical and Aerospace. "Development and characterization of a damage tolerant microstructure for a Ni-base turbine disc alloy." Ottawa, 2000.
Знайти повний текст джерелаBüche, Dirk. "Multi-objective evolutionary optimization of gas turbine components /." [S.l.] : [s.n.], 2003. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=15240.
Повний текст джерела