Transactions of the ASME . Journal of engineering for gas turbines and power, Vol. 132 N° 2. Journal of engineering for gas turbines and power - Fevrier 2010
| Titre : | Transactions of the ASME . Journal of engineering for gas turbines and power, Vol. 132 N° 2. Journal of engineering for gas turbines and power - Fevrier 2010 |
| Type de document : | Bulletin |
| Paru le : | 04/11/2010 |
Dépouillements
Article : texte imprimé
Eugene Lubarsky, Auteur ;
Jonathan R. Reichel, Auteur ;
Ben T. Zinn, Auteur
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This paper describes an experimental investigation of the spray created by Jet A fuel injection from a plate containing sharp edged orifice 0.018 in. (457 µm) in diameter and L/D ratio of 10 into the crossflow of preheated air (555 K) at elev[...]
Article : texte imprimé
Daesik Kim, Auteur ;
Jong Guen Lee, Auteur ;
Bryan D. Quay, Auteur
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The flame transfer function in a premixed gas turbine combustor is experimentally determined. The fuel (natural gas) is premixed with air upstream of a choked inlet to the combustor. Therefore, the input to the flame transfer function is the imp[...]
Article : texte imprimé
Tongxun Yi, Auteur ;
Domenic A. Santavicca, Auteur
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Reported is a practical method for accurate and fast determination of the instantaneous fuel flow rate out of a fuel injector. Both gaseous and liquid fuels are considered. Unsteady fuel flow rates introduced into a combustor can be caused by bo[...]
Article : texte imprimé
Ignition and flame speed kinetics of two natural gas blends with high levels of heavier hydrocarbons
Gilles Bourque, Auteur ;
Darren Healy, Auteur ;
Henry Curran, Auteur
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High-pressure experiments and chemical kinetics modeling were performed to generate a database and a chemical kinetic model that can characterize the combustion chemistry of methane-based fuel blends containing significant levels of heavy hydroc[...]
Article : texte imprimé
Jochen R. Brückner-Kalb, Auteur ;
Michael Krösser, Auteur ;
Christoph Hirsch, Auteur
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The concept of the cyclic periodical mixing combustion process (Kalb, and Sattelmayer, 2004, “Lean Blowout Limit and NOx-Production of a Premixed Sub-ppm-NOx Burner With Periodic Flue Gas Recirculation,” Proceedings of the ASME Turbo Expo 2004, [...]
Article : texte imprimé
Tongxun Yi, Auteur ;
Domenic A. Santavicca, Auteur
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Heat release rate responses to inlet fuel modulations, i.e., the flame transfer function (FTF), are measured for a turbulent, liquid-fueled, swirl-stabilized lean direct fuel injection combustor. Fuel modulations are achieved using a motor-drive[...]
Article : texte imprimé
Borguet, S., Auteur ;
O. Léonard, Auteur
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Least-squares-based methods are very popular in the jet engine community for health monitoring purposes. In most practical situations, the number of health parameters exceeds the number of measurements, making the estimation problem underdetermi[...]
Article : texte imprimé
Rakesh K. Bhargava, Auteur ;
Michele Bianchi, Auteur ;
Stefano Campanari, Auteur
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This paper discusses the gas turbine performance enhancement approach that has gained a lot of momentum in recent years in which modified Brayton cycles are used with humidification or water/steam injection, termed “wet cycles,” or with fuel cel[...]
Article : texte imprimé
Hans-Peter Bossmann, Auteur ;
Sharath Bachegowda, Auteur ;
Alexander Schnell, Auteur
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A reliable lifetime prediction rule for bondcoat/thermal barrier coating (BC/TBC) coated parts in gas turbine operation is necessary to determine remnant service life. The specimens investigated were coated with MCrAlY plus yttria partially stab[...]
Article : texte imprimé
Shun-sen Wang, Auteur ;
Guan-wei Liu, Auteur ;
Jing-ru Mao, Auteur
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This paper experimentally examines the influence of coating thickness, test temperature, coating hardness, and defects on the erosion resistance of boride coatings, ion plating CrN coatings, and thermal spraying coatings. The results demonstrate[...]
Article : texte imprimé
H. M. Tawancy, Auteur ;
Luai M. Al Hadhrami, Auteur
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Current technology of thermal barrier coating systems used in gas turbine blade applications relies on the use of a metallic bond coat, which has a twofold function: (i) it develops a thin layer of aluminum oxide enhancing the adhesion of the ce[...]
Article : texte imprimé
Mario L. Ferrari, Auteur ;
Matteo Pascenti, Auteur ;
Loredana Magistri, Auteur
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The aim of this work is the experimental analysis of a primary-surface recuperator, operating in a 100 kW micro gas turbine, as in a standard recuperated cycle. These tests, performed in both steady-state and transient conditions, have been carr[...]
Article : texte imprimé
Wendy J. Matthews, Auteur ;
Karren L. More, Auteur ;
Larry R. Walker, Auteur
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Extensive work performed by Capstone Turbine Corporation, Oak Ridge National Laboratory, and various others has shown that the traditional primary surface recuperator alloy, type 347 stainless steel, is unsuitable for applications above 650°C (~[...]
Article : texte imprimé
G. Chen, Auteur ;
C. G. Li, Auteur ;
D. Y. Wang, Auteur
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In this paper, a new rotor-ball bearings-support-stator coupling system dynamic model with rubbing coupling faults is established for practical aeroengine. In the model, the rubbing fault is modeled, the stator motion is considered, the flexible[...]
Article : texte imprimé
John J. Yu, Auteur
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This paper discusses real cases on three different machines where subsynchronous vibration occurred suddenly at a frequency exactly equal to one-half ((1/2)X) of the operational speed of 3600 rpm. In two cases, vibration amplitude increased from[...]
Article : texte imprimé
Hongsheng Guo, Auteur ;
W. Stuart Neill, Auteur ;
Wally Chippior, Auteur
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Homogeneous charge compression ignition (HCCI) is an advanced low-temperature combustion technology being considered for internal combustion engines due to its potential for high fuel conversion efficiency and extremely low emissions of particul[...]
Article : texte imprimé
Prashanth K. Karra, Auteur ;
Song-Charng Kong, Auteur
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Three injectors with different nozzle geometries were tested in a multicylinder diesel engine with a high-pressure common-rail injection system. Various injection pressures were tested along with exhaust gas recirculation to achieve low NOx and [...]
Article : texte imprimé
Kulkarni, Anup M., Auteur ;
Shaver, Gregory. M., Auteur ;
Sriram S. Popuri, Auteur
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This paper describes an accurate, flexible, and computationally efficient whole engine model incorporating a multizone, quasidimension combustion submodel for a 6.7-l six-cylinder turbocharged diesel engine with cooled exhaust gas recirculation [...]
Article : texte imprimé
Rocco Piccione, Auteur ;
Antonio Vulcano, Auteur ;
Sergio Bova, Auteur
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In the usual liquid cooling system of an internal combustion engine a centrifugal pump is driven by the crankshaft and imposes a coolant flow, which transfers heat from the engine walls to the radiator. Therefore, as the engine is switched-off, [...]
Article : texte imprimé
Hugh M. McIlroy, Jr., Auteur ;
Mc Eligot, Donald M., Auteur ;
Robert J. Pink, Auteur
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Mean-velocity-field and turbulence data are presented that measure turbulent flow phenomena in an approximately 1:7 scale model of a region of the lower plenum of a typical prismatic gas-cooled reactor similar to a General Atomics gas-turbine-mo[...]
Article : texte imprimé
David R. Keyser, Auteur ;
Jeffrey R. Friedman, Auteur
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Performance test codes require primary mass-flow accuracies that in many applications require laboratory quality calibration of differential pressure meters. It is also true that many performance tests are conducted at Reynolds numbers and flows[...]
Article : texte imprimé
Mario L. Ferrari, Auteur ;
Matteo Pascenti, Auteur ;
Loredana Magistri, Auteur
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The Thermochemical Power Group of the University of Genoa, Italy, has developed a new “Gas Turbine” laboratory to introduce undergraduate students to the Gas Turbines and Innovative Cycles course, and Ph.D.s to advanced experimental activities i[...]
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