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Dissertations / Theses on the topic 'Turbine casing'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Tapanlis, Orpheas. "Turbine casing impingement cooling systems." Thesis, University of Oxford, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.711623.

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2

Chen, Hua. "Steady and unsteady performance of vaneless casing radial-inflow turbines." Thesis, University of Manchester, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.291004.

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3

Šamalík, Jakub. "Parní turbina." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2011. http://www.nusl.cz/ntk/nusl-229866.

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In this master’s thesis, I made a thermodynamic calculation of a steam turbine under the parameters given. In order to increase the efficiency of the low-pressure turbine section and to reduce axial length of the low-pressure rotor, a radial stage is designed in this section. The master’s thesis also includes a design of the low-pressure section. The thesis is divided into chapters, which contains a calculation of the single sections of the turbine. In the introductory chapters, the single sections of the turbine engineered are theoretically discussed. In the conclusion, assessments of the ben

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4

Kadhim, Hakim Tarteeb Kadhim. "Effect of non-axisymmetric casing on flow and performance of an axial turbine." Thesis, University of Leicester, 2018. http://hdl.handle.net/2381/42811.

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Advances in computer based optimization techniques can be used to enhance the efficiency of energy conversions processes, such as by reducing the aerodynamic loss in thermal power plant turbomachines. One viable approach for reducing this flow energy loss is by endwall contouring. This thesis implements a design optimization workflow for the casing geometry of a 1.5 stage axial flow turbine, towards mitigating secondary flow losses. In this thesis, a new non-axisymmetric endwall design method for the stator casing is implemented through a novel surface definition that draws from observations o

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5

Trávníček, Tomáš. "Parní turbína pro solární elektrárnu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231806.

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The aim of the master’s thesis is a design of double casing condensing steam turbine with gearbox, reheat and with power output 110 MW for solar power station. The steam turbine has an axial output to the air cooled condenser. The design of the turbine is developed on the basis of concept of Doosan Skoda Power company. It is the main reason this turbine has the impulse blading. There are heat calculation and calculation of heat balance diagram in the first part of the thesis. The system of regeneration consist of three Low Pressure Feedwater Heaters (L.P. FWH), deaerator, and two High Pressure

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6

Van, Poppel Bret P. (Bret Patrick) 1969. "Tip casing heat transfer measurements of a film-cooled turbine stage in a short duration facility." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/82202.

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7

Choi, Myeonggeun. "Thermal control of gas turbine casings for improved tip clearance." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:14a9ce6a-2af6-4187-afe7-8c6f8e113855.

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A thermal tip clearance control system provides a robust and flexible means of manipulating the closure between the casing and the rotating blade tips in a jet engine, reducing undesirable tip leakage flows. This may be achieved using an impingement cooling scheme on the external casing of the engine in conjunction with careful thermal management of internal over-tip seal segment cavity. For a reduction in thrust specific fuel consumption, the mass flow rate of air used for cooling must be minimised, be at as low a pressure as possible and delivered through a light weight structure surrounding

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8

Thomas, Gregory Alexander. "The effect of a casing geometry modification on blade tip-gap aero-thermodynamics in a transonic, high-pressure turbine." Thesis, University of Oxford, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.443002.

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9

Ferguson, Jeremy Lee. "A Moving Load Finite Element-Based Approach To Determining Blade Tip Forces During A Blade-On-Casing Incursion In A Gas Turbine Engine." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1204131916.

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10

Vrána, Jan. "Třírotorový lopatkový stroj pro klimatizační systém." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230158.

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For air cooling in aircrafts is used an air cycle machine. Recently, there is focusing on incresing efficiency of air cycle and due this are added another rotors. Design of machine with three rotors is performed in this thesis.

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11

Třináctý, Jan. "Parní turbína pro fosilní elektrárnu - ST NT díl." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231808.

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This thesis describes the design of a condensing steam turbine with reheating for fossil power plant. The turbine is a double parts. The first casing is formed by a simple HP casing. The second casing is combined MP-LP casing with axial outlet of steam into the water-cooled condenser. Feedwater regeneration system consists of two high-pressure heaters, the four low-pressure heaters and feed tank. In thesis is includes the calculation of heat balance and the draft of flow channel of HP and MP-LP casing. Next is a detailed calculation of MP-LP casing with includes calculation of flowing part, se

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12

Adámek, Tomáš. "Dvoutělesová kondenzační parní turbina." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230759.

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This thesis is focused on calculation of double casing condensing steam turbine with capacity 200 MW for petrochemical industry´s consumptions. Engine is projected for gas-steam cycle. It has one controlled extraction points placed between two bodies, two uncontrolled extraction points and axial output to air-cooling condenser. Balance scheme was made for 100% operation. Detail design is made only for ST/NT casing and it includes calculation of flowing part, selection of blade´s profile and its stress control. Rotor is checked for critical speed, safety rigid coupling is calculated and accordi

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13

Heße, Christian. "Entwicklung eines wissensbasierten modularen Verfahrens zur Beurteilung der thermischen Verkrümmung von Industriedampfturbinengehäusen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-66668.

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Thermische Gehäuseverkrümmungen spielen bei der Dimensionierung von radialen Spielen in Industriedampfturbinen eine große Rolle. Die zuverlässige Vorausberechnung der Gehäuseverkrümmung ist wichtig, um einerseits möglichst kleine Spiele und damit hohe innere Wirkungsgrade erzielen zu können und andererseits Schäden in Folge von Spielüberbrückungen auszuschließen. In der vorliegenden Arbeit wurde die Gehäuseverkrümmung mit analytischen Methoden und mit Hilfe von 3D-FE-Analysen untersucht. Eine neue semi-analytische Berechnungsmethode auf Basis eines Stufenkörpermodells wurde entwickelt. Damit l

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14

Jackson, Keith S. (Keith Stuart). "CAD-casting of gas turbine airfoils using three dimensional printing." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10518.

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15

Owarish, O. Hassam. "Design and performance of nozzle-less volute casings for inward flow radial turbines." Thesis, University of Hertfordshire, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303463.

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16

Noselli, Romain. "Casting defects mechanical impact on turbine blades fatigue life - Engine feedback analysis." Thesis, KTH, Hållfasthetslära (Inst.), 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-204950.

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Aircraft engines are complex, value-added high-tech systems, which possess very restrictive technical specifications. This is especially the case for turbine parts which are submitted to very hostilethermo-mechanical environments. The technical properties, such as fatigue life and creep tolerance of these parts are therefore of primary concern. The properties of the parts are also strongly linked to the manufacturing processes. Unfortunately, these processes possess inherent flaws that lead to the presence of unwanted abnormalities. Fordesign optimization and cost efficiency, great care and ef

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17

Shirani, Mehdi. "Probabilistic and defect tolerant fatigue assessment of wind turbine castings." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for produktutvikling og materialer, 2011. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-15558.

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The present thesis deals with probabilistic and defect tolerant fatigue assessment of wind turbine castings. To this end, two types of EN-GJS-400-18-LT ductile cast iron were investigated in this research, clean baseline material in the shape of casting blocks with different thicknesses and also defective material from a rejected wind turbine hub. To establish the required P–S–N diagrams for safe-life design of wind turbine castings, fatigue specimens with different dimensions machined from baseline casting blocks with different thicknesses. Constant amplitude axial fatigue tests were performe

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18

Stanley, Felix. "Dimensional reduction and design optimization of gas turbine engine casings for tip clearance studies." Thesis, University of Southampton, 2010. https://eprints.soton.ac.uk/342789/.

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The objective of this research is to develop a design process that can optimize an engine casing assembly to reduce tip clearance losses. Performing design optimization on the casings that form a gas turbine engine's external structure is a very tedious and cumbersome process. The design process involves the conceptual, the preliminary and the detailed design stages. The redesign costs involved are high when changes are made to the design of a part in the detailed design stage. Normally a 2D configuration is envisaged by the design team in the conceptual design stage. Engine thrust, mass flow,

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19

Mueller, Erik M. "The characterization of freckle casting defects in directionally solidified nickel-base superalloy turbine blades." [Gainesville, Fla.] : University of Florida, 2003. http://purl.fcla.edu/fcla/etd/UFE0000919.

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20

Mayr, Peter. "8. Chemnitzer Symposium Füge- und Schweißtechnik 2012: Tagungsband, 20. November 2012." Technische Universität Chemnitz, 2012. https://monarch.qucosa.de/id/qucosa%3A19784.

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Im Rahmen des Symposiums gaben Vertreter weltweit agierender Konzerne, wie Audi AG, voestalpine Gießerei Linz, Alstom AG und SITEC GmbH Einblick in ihre Forschungsaktivitäten im Bereich Mobilität, Energietechnik, Medizintechnik und Sondermaschinenbau. Die schweißtechnischen Institute der Universitäten Aachen, Braunschweig, Clausthal, Dresden, Magdeburg und Graz gaben einen Überblick über universitäre Forschungsaktivitäten.

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21

Behr, Thomas. "Control of rotor tip leakage and secondary flow by casing air injection in unshrouded axial turbines /." Zürich : ETH, 2007. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17283.

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22

Raza, Mohsin. "Process development for investment casting of thin-walled components : Manufacturing of light weight components." Licentiate thesis, Mälardalens högskola, Innovation och produktrealisering, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-27807.

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Manufacturing processes are getting more and more complex with increasing demands of advanced and light weight engineering components, especially in aerospace industry. The global requirements on lower fuel consumption and emissions are increasing the demands in lowering weight of cast components. Ability to produce components in lower wall thickness will not only help to reduce the cost of production but also help to improve the efficiency of engineering systems resulting in lower fuel consumption and lesser environmental hazardous emissions. In order to produce thin-walled components, unders

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23

Newell, Matthew David. "Aspects of a novel casting process for the production of nickel-based superalloy high pressure turbine blades." Thesis, University of Birmingham, 2009. http://etheses.bham.ac.uk//id/eprint/525/.

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A novel process in which individual turbine blades are produced by the high rate solidification method has been developed. The technology, with an optimised radiation baffle, gave a thermal gradient of 11.64 x 10\( 3\) K.m\( {-1}\), whilst maintaining a flat solidification front, calculated using a specially created and validated process model. The corresponding primary dendrite arm spacing was reduced to 165 x 10\( {-6}\) m and the calculated freckle potential was below the critical threshold limit identified by Beckermann et al. (2000), even in highly freckle prone alloys. Low angle grain bo

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24

Dai, Huijuan. "A study of solidification structure evolution during investment casting of Ni-based superalloy for aero-engine turbine blades." Thesis, University of Leicester, 2009. http://hdl.handle.net/2381/4551.

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The need to achieve increased efficiency and performance in aerospace gas turbines requires advanced single crystal Ni-based superalloys to exhibit increased temperature capabilities. High temperature creep resistance of the turbine blades is one of the major limitations to meet increased performance goals of gas turbines. The ultimate creep resistance of the Ni-based superalloys is dependent on solidification structures formed during casting. In this study, multi-scale modelling method was used to study the solidification structure evolution occurring at various scales during investment casti

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25

Kníř, Jakub. "Parametrická studie vlivu tvaru štěrbiny mezi lopatkou rotoru turbíny a skříní motoru na aerodynamické vlastnosti rotoru." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2013. http://www.nusl.cz/ntk/nusl-230820.

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Tato diplomová práce otevírá otázku možnosti zlepšení vlastností kompresoru za pomoci numerické simulace proudění. Hlavním cílem je zvýšení operačního rozsahu na jednom stupni axiálního kompresoru s využitím zařízení pro pasivní kontrolu proudu umístěných ve skříni kompresoru. Prvně bylo prověřeno chování víru ve štěrbině mezi lopatkou a skříní následně celkové charakteristiky původního rotoru. Při snižování hmotnostního průtoku simulace odhalila zvýšený vliv koncového výru na hlavní proud. Navíc byl největší koncový vír v režimu blízkém odtrhávání proudění. Z tohoto důvodu byly pro kontrolu k

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26

Umshaus, Josef. "Přesné lití odlitků ze slitin TiAl." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228183.

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Intermetallic alloys gama TiAl are prospective materials of future thanks its excellent machanical qualities and low density. However this alloy clash with for wider expansion to the practice on burdensomeness production and processing. Among disavantages belongs to also her bad fluidity. The diploma work is angaged in possibilities imporing fluidity alloys TiAl by the help of centrifuge casting. Casting healthy casts was achieved in experimental part.

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27

Gallagher, Angela. "A decision support system methodology for the selection of rapid prototyping technologies for investment-cast gas turbine parts." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4512.

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In the power generation sector, more specifically, the gas turbine industry, competition has forced the lead time-to-market for product advancements to be more important than ever. For design engineers, this means that product design iterations and final product development must be completed within both critical time windows and budgetary constraints. Therefore, two areas that have received significant attention in the research and in practice are: (1) rapid prototyping technology development, and (2) rapid prototyping technology selection. Rapid prototyping technology selection is the focus o

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28

Chandra, Andy Sebastian, and 曾經財. "The Repairs of Gas Turbine Casing by Laser Cladding Method." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/rxnhfy.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>99<br>The aim of this research is to investigate the feasibility of repairing cracked gas turbine casing made of ductile cast iron by using newly developed laser cladding process. The effects of laser cladding process on the microstructure and mechanical properties of repaired ductile cast iron were studied under various combinations of processing parameters. Optical microscopy and Electron Probe X-ray Microanalysis (EPMA) were used to investigate the interface microstructure and chemical elements mapping between Fusion Zone (FZ) - Heat Affective Zone (HAZ) and HAZ-b

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29

SHIAN-YI, LIN, and 林憲義. "Combustion Characteristics of a Can Type Gas Turbine Combustor with Rotating Casing." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/12094392213097179102.

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碩士<br>長庚大學<br>機械工程研究所<br>94<br>The purpose of this study is to establish a numerical model for a can type gas turbine combustor with rotating casing and to analyze combustion characteristics by numerical simulations. A newly designed gas turbine combustor is installed inside the shaft (a hollow shaft) of gas turbine while the shaft functions as the casing of combustor. When the shaft (casing) rotates, the air will flow in both axial and circular directions between the liner and the casing. This circular airflow will influence the swirl when it enters the combustor. Generally speaking, swirl ma

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30

Ajvad, Maaz, and Maaz Ajvad. "Syngas Combustion Analysis in a Micro Gas Turbine Combustor with a Rotating Casing." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107CGU05489010%22.&searchmode=basic.

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碩士<br>長庚大學<br>機械工程學系<br>107<br>The aim of this thesis is to analyze the performance of the can combustor with a rotating casing using syngas as a fuel. This study not only analyzed the operation of the can combustor supplied with syngas but also, proposed a design modification required for syngas application. For the analysis, commercial CFD software ANSYS Fluent is used. The numerical study were conducted by a RANS computational model, which consist of three-dimension compressible k- realizable turbulent flow model and presume probability density function for combustion process invoking a la

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31

Gajannavar, Benakanaik. "Creative Design of Pattern for Sand Casting of Turbine Blade." Thesis, 2009. http://ethesis.nitrkl.ac.in/998/1/benproject3.doc.

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The manufacturing of turbine blades is often outsourced to investment casting foundries by aerospace companies that design and build jet engines. Aerospace companies have found that casting defects are an important cost driver in the price that they pay the foundries for the turbine blades. Defect types include porosity, stress, grain, fill, and mold-related defects. In order to address the defect problem, aerospace companies have adopted a design for manufacture approach to drive the cost of the turbine blades down. The principal research objective of this thesis was to discover how the criti

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32

"8. Chemnitzer Symposium Füge- und Schweißtechnik 2012." Universitätsbibliothek Chemnitz, 2012. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-97005.

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Im Rahmen des Symposiums gaben Vertreter weltweit agierender Konzerne, wie Audi AG, voestalpine Gießerei Linz, Alstom AG und SITEC GmbH Einblick in ihre Forschungsaktivitäten im Bereich Mobilität, Energietechnik, Medizintechnik und Sondermaschinenbau. Die schweißtechnischen Institute der Universitäten Aachen, Braunschweig, Clausthal, Dresden, Magdeburg und Graz gaben einen Überblick über universitäre Forschungsaktivitäten.

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33

Chu, Che-I., and 朱哲儀. "Design and Experiments of Casting System for Aerospace Heat Resistant Steel Turbine Blades." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/b8fh66.

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碩士<br>國立屏東科技大學<br>機械工程系所<br>106<br>Turbine blades are crucial engine components that operate in harsh environments with high temperatures and complex stress conditions. The performance levels of turbine blades (particularly their resistance to high temperatures) are considered to be important indicators of how advanced an engine is, and in a certain sense, they can also represent the industrial standards of a nation. Investment casting offers processing characteristics that conventional sand casting, forging, and mechanical cutting do not, is suitable for a wide range of materials, and enables

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34

Yen, Ting-Yu, and 顏廷宇. "Casting process and material control on the castingof 2MW wind turbine rotor hub system." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/81795860601223231998.

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碩士<br>臺灣大學<br>機械工程學研究所<br>95<br>This research focuses on the casting of wind turbine rotor hub system, establishing an engineering-rule of alloy design and casting process. In our experiment, we investigate the influence of C、Si、Ni amounts and the technique of nodularizing and inoculation treatment on microstructure, tensile property, low-temperature(-20oC) impact property, and anti-corrosion property so to arrive at an optimal alloy design and casting process for the manufacturing of the wind turbine rotor hub system. The purpose of this research is to achieve the following engineering-rule f

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35

Ho, Kuen-Sen, and 何堃森. "Development of Process Technologies and Process /Microstructure Simulation in Casting and Surface Coating for Engine Turbine Section Precision Airfoil Components." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/33001949811972330985.

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博士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>92<br>Turbine blade and vane are jet engine key components. The purpose of this dissertation is to improve process technology and process /microstructure simulation of casting and surface coating for two complex turbine section parts. The cast parts under investigation are a René 77 equiaxed 6-vane turbine multi-nozzle of dimensions 230mmL*180mmH*51mmW and a Mar-M-247LC complex hollow directionally solidified blade of dimensions 53mmL*50mmH*15mmW. This dissertation is divided into five sections. It begins by describing how a good quality multi-vane segment ma

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