Results 111 to 120 of about 36,734 (164)
Extension of similarity test procedures to cooled engine components with insulating ceramic coatings [PDF]
Material thermal conductivity was analyzed for its effect on the thermal performance of air cooled gas turbine components, both with and without a ceramic thermal-barrier material, tested at reduced temperatures and pressures.
Gladden, H. J.
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Composite wall concept for high temperature turbine shrouds: Heat transfer analysis [PDF]
A heat transfer analysis was made of a composite wall shroud consisting of a ceramic thermal barrier layer bonded to a porous metal layer which, in turn, is bonded to a metal base.
Ludwig, L. P., Stepka, F. S.
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Liquid-cooling technology for gas turbines review and status [PDF]
A review of research related to liquid cooling of gas turbines was conducted and an assessment of the state of the art was made. Various methods of liquid cooling turbines were reviewed.
Stepka, F. S., Vanfossen, G. J., Jr.
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Comparison of predicted and experimental external heat transfer around a film cooled cylinder in crossflow [PDF]
Calculations were made of the film cooling provided by rows of holes around the circumference of a cylinder in crossflow and the results were compared to experimental data.
Gaugler, R. E., Stepka, F. S.
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Measurement of Pressure Pulsations in Francis Turbines
, 2010 The work presented in this thesis involves preparation and execution of measurements on Francis runners. The measurements were performed by means of onboard measuring equipment both in model runners and full-scale prototype runners. Also, analysis of the measured data, and the discussion of the results, is presented.
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Some advantages of methane in an aircraft gas turbine [PDF]
Liquid methane, which can be manufactured from any of the hydrocarbon sources such as coal, shale biomass, and organic waste considered as a petroleum replacement for aircraft fuels.
Glassman, A. J., Graham, R. W.
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Conceptual design of the MHD Engineering Test Facility [PDF]
The reference conceptual design of the MHD engineering test facility, a prototype 200 MWe coal-fired electric generating plant designed to demonstrate the commerical feasibility of open cycle MHD is summarized.
Bents, D. J. +9 more
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Accurate Determination of Volumetric and Mechanical Efficiencies and Leakage Behavior of Francis Turbine and Francis Pump-Turbineapplication/pdf In order to determine the volumetric and the mechanical efficiencies of Francis turbine and Francis pump-turbine, the flow in the front and the back spaces of a runner equipped with several thrust balancing devices, such as balancing pipes and balancing holes, is analyzed theoretically. The flow characteristics in sixteen types of model
openaire
Variable speed operations of Francis turbines
, 2019 Den økende andelen av uregulerbar kraftproduksjon, som vind og sol, blir det stadig viktigere å ha mer pålitelige energikilder for å tilfredsstille etterspørselen av et varierende strømforbruk.Vannkraft kan brukes til dette formålet, selv om dette ofte medfører å drive turbinen under forhold som den ikke var konstruert for.
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Fatigue loads in a Francis turbine runner
, 2019 Utvidelsen av fornybare energikilder i det europeiske energimarkedet fører til en økende etterspørsel etter regulerbare energikilder som kan stabilisere nettfrekvensen. Vannkraft kan fungere som en regulerbar energikilde, men det stiller krav om en mer fleksibel daglig drift av turbinene.
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