http://scitation.aip.org/ J. Eng. Gas Turbines Power: All Topics http://link.aip.org/link/doi/10.1115/1.3205024 Yuh-Yih Wu, Ching-Tzan Jang, and Bo-Liang Chen<br/> Homogeneous charge compression ignition (HCCI) is recognized as an advanced combustion system for internal combustion engines that reduces fuel consumption and exhaust emissions. This work studied a 150 cc air-cooled, four-stroke motorcycle engine employing HCCI combustion. The compression ratio was ... [J. Eng. Gas Turbines Power 132, 044501 (2010)] published Fri Jan 22, 2010. http://link.aip.org/link/doi/10.1115/1.4000337 Bai Bofeng, Liu Maolong, Su Wang, and Zhang Xiaojie<br/> An experimental study was conducted on the air-water two-phase flow patterns in the bed of rectangular cross sections containing spheres of regular distribution. Three kinds of glass spheres with different diameters (3 mm, 6 mm, and 8 mm) were used for the establishment of the test section. By means ... [J. Eng. Gas Turbines Power 132, 042903 (2010)] published Wed Jan 27, 2010. http://link.aip.org/link/doi/10.1115/1.3098421 Ashley E. Finan and Andrew C. Kadak<br/> Energy security and greenhouse gas reduction are thought to be two of the most urgent priorities for sustaining and improving the human condition in the near future. Few places pit the two goals so directly in opposition to one another as the Alberta oil sands. Here, Canadian natural gas is burned i ... [J. Eng. Gas Turbines Power 132, 042902 (2010)] published Fri Jan 22, 2010. http://link.aip.org/link/doi/10.1115/1.3094020 D. Freis, D. Bottomley, J. Ejton, W. de Weerd, H. Kostecka, and E. H. Toscano<br/> A new furnace for accident condition testing of spherical high temperature reactor fuel elements has been installed and now operates in the hot cells of the Institute for Transuranium Elements (ITU) Karlsruhe. The recent apparatus was constructed on the basis of a former development by Forschungszen ... [J. Eng. Gas Turbines Power 132, 042901 (2010)] published Fri Jan 15, 2010. http://link.aip.org/link/doi/10.1115/1.4000115 Dung Ngoc Nguyen, Hiroaki Ishida, and Masahiro Shioji<br/> Gaseous fuels, such as hydrogen and natural gas, are utilized in internal combustion engines for spark-ignition operation. To improve thermal efficiency and to ensure control at good heat-release rates, combustion systems with direct-injection and spontaneous-ignition operation may be preferable. Th ... [J. Eng. Gas Turbines Power 132, 042804 (2010)] published Wed Jan 27, 2010. http://link.aip.org/link/doi/10.1115/1.3204510 Michael Benz, Christopher H. Onder, and Lino Guzzella<br/> This paper presents a novel control-oriented model of the raw emissions of diesel engines. An extended quasistationary approach is developed where some engine process variables, such as combustion or cylinder charge characteristics, are used as inputs. These inputs are chosen by a selection algorith ... [J. Eng. Gas Turbines Power 132, 042803 (2010)] published Tue Jan 19, 2010. http://link.aip.org/link/doi/10.1115/1.3203146 S. Som, S. K. Aggarwal, E. M. El-Hannouny, and D. E. Longman<br/> Cavitation and turbulence inside a diesel injector play a critical role in primary spray breakup and development processes. The study of cavitation in realistic injectors is challenging, both theoretically and experimentally, since the associated two-phase flow field is turbulent and highly complex, ... [J. Eng. Gas Turbines Power 132, 042802 (2010)] published Fri Jan 15, 2010. http://link.aip.org/link/doi/10.1115/1.3077659 Shailendra Sinha and Avinash Kumar Agarwal<br/> In the present experimental research work, rice-bran oil methyl ester (ROME) is derived through transesterification of rice-bran oil using methanol in the presence of sodium hydroxide catalyst. On the basis of previous research for performance, emission, and combustion characteristics, a 20% (v/v) b ... [J. Eng. Gas Turbines Power 132, 042801 (2010)] published Tue Jan 12, 2010. http://link.aip.org/link/doi/10.1115/1.3159386 Luis San Andres and Tae Ho Kim<br/> The paper introduces a thermohydrodynamic (THD) model for prediction of gas foil bearing (GFB) performance. The model includes thermal energy transport in the gas film region and with cooling gas streams, inner or outer, as in typical rotor-GFBs systems. The analysis also accounts for material prope ... [J. Eng. Gas Turbines Power 132, 042504 (2010)] published Tue Jan 26, 2010. http://link.aip.org/link/doi/10.1115/1.3159377 Luis San Andres, Jose Baker, and Adolfo Delgado<br/> Brush seals effectively control leakage in air breathing engines, albeit only applied for relatively low-pressure differentials. Hybrid brush seals (HBS) are an alternative to resolve poor reliability resulting from bristle tip wear while also allowing for reverse shaft rotation operations. A HBS in ... [J. Eng. Gas Turbines Power 132, 042503 (2010)] published Tue Jan 26, 2010. http://link.aip.org/link/doi/10.1115/1.3204656 Darren E. Holland, Matthew P. Castanier, Steven L. Ceccio, Bogdan I. Epureanu, and Sergio Filippi<br/> In this work, an integrated testing and calibration procedure is presented for performing mistuning identification (ID) and traveling wave excitation (TWE) of one-piece bladed disks (blisks). The procedure yields accurate results while also being highly efficient and is comprised of three basic phas ... [J. Eng. Gas Turbines Power 132, 042502 (2010)] published Mon Jan 25, 2010. http://link.aip.org/link/doi/10.1115/1.3159374 Adolfo Delgado and Luis San Andres<br/> In rotor-bearing systems, squeeze film dampers (SFDs) provide structural isolation, reduce amplitudes of rotor response to imbalance, and in some instances, increase the system threshold speed of instability. SFDs are typically installed at the bearing supports, either in series or in parallel. In m ... [J. Eng. Gas Turbines Power 132, 042501 (2010)] published Fri Jan 22, 2010. http://link.aip.org/link/doi/10.1115/1.3204586 Nick Baines, Karl D. Wygant, and Antonis Dris<br/> Heat transfers in an automotive turbocharger comprise significant energy flows, but are rarely measured or accounted for in any turbocharger performance assessment. Existing measurements suggest that the difference in turbine efficiency calculated in the conventional way, by means of the fluid tempe ... [J. Eng. Gas Turbines Power 132, 042301 (2010)] published Mon Jan 25, 2010. http://link.aip.org/link/doi/10.1115/1.3204506 Leonardo S. Vieira, Carlos F. Matt, Vanessa G. Guedes, Manuel E. Cruz, and Fernando V. Castelloes<br/> The high cost of energy resources has driven a strong and continued quest for their optimal utilization. In this context, modern thermoeconomic optimization techniques have been developed to analyze and design improved energy systems, leading to a better compromise between energetic efficiency and c ... [J. Eng. Gas Turbines Power 132, 041801 (2010)] published Fri Jan 15, 2010. http://link.aip.org/link/doi/10.1115/1.3159378 Y. G. Li<br/> In gas turbine operations, engine performance and health status are very important information for engine operators. Such engine performance is normally represented by engine airflow rate, compressor pressure ratios, compressor isentropic efficiencies, turbine entry temperature, turbine isentropic e ... [J. Eng. Gas Turbines Power 132, 041701 (2010)] published Mon Jan 25, 2010. http://link.aip.org/link/doi/10.1115/1.3159384 Craig R. Davison and Chris Drummond<br/> Statistically based metrics, incorporating operating costs, for gas turbine engine diagnostic systems are required to evaluate competing products fairly and to establish a convincing business case. Diagnostic algorithm validation often includes engine testing with implanted faults. The implantation ... [J. Eng. Gas Turbines Power 132, 041604 (2010)] published Wed Jan 27, 2010. http://link.aip.org/link/doi/10.1115/1.3159387 Matthew A. White, Manuj Dhingra, and J. V. R. Prasad<br/> An infinite-line probe is commonly used to measure unsteady pressure in high-temperature environments while protecting the pressure transducer. In this study, an existing theoretical model is used to derive the response of a waveguide pressure measuring system. An ambient temperature centrifugal com ... [J. Eng. Gas Turbines Power 132, 041603 (2010)] published Tue Jan 26, 2010. http://link.aip.org/link/doi/10.1115/1.3204508 Young K. Lee, Dimitri N. Mavris, Vitali V. Volovoi, Ming Yuan, and Ted Fisher<br/> This paper presents an offline fault diagnosis method for industrial gas turbines in a steady-state. Fault diagnosis plays an important role in the efforts for gas turbine owners to shift from preventive maintenance to predictive maintenance, and consequently to reduce the maintenance cost. Ever sin ... [J. Eng. Gas Turbines Power 132, 041602 (2010)] published Fri Jan 15, 2010. http://link.aip.org/link/doi/10.1115/1.3200907 Payuna Uday and Ranjan Ganguli<br/> The removal of noise and outliers from health signals is an important problem in jet engine health monitoring. Typically, health signals are time series of damage indicators, which can be sensor measurements or features derived from such measurements. Sharp or sudden changes in health signals can re ... [J. Eng. Gas Turbines Power 132, 041601 (2010)] published Tue Jan 12, 2010. http://link.aip.org/link/doi/10.1115/1.4000123 M. Konle and T. Sattelmayer<br/> Flame flashback driven by combustion induced vortex breakdown (CIVB) represents one of the most severe reliability problems of modern gas turbines with swirl stabilized combustors. Former experimental investigations of this topic with a 500 kW burner delivered a model for the prediction of the CIVB ... [J. Eng. Gas Turbines Power 132, 041503 (2010)] published Wed Jan 27, 2010. http://link.aip.org/link/doi/10.1115/1.3204532 Kyu Tae Kim, Jong Guen Lee, Hyung Ju Lee, Bryan D. Quay, and Domenic A. Santavicca<br/> Flame transfer function measurements of turbulent premixed flames are made in a model lean-premixed, swirl-stabilized, gas turbine combustor. OH, CH, and CO chemiluminescence emissions are measured to determine heat release oscillation from a whole flame, and the two-microphone technique is used to ... [J. Eng. Gas Turbines Power 132, 041502 (2010)] published Tue Jan 19, 2010. http://link.aip.org/link/doi/10.1115/1.3019293 Peter Albrecht, Stefanie Bade, Arnaud Lacarelle, Christian Oliver Paschereit, and Ephraim Gutmark<br/> Premixed flames of swirl-stabilized combustors (displaced half-cone) are susceptible to thermo-acoustic instabilities, which should be avoided under all operating conditions in order to guarantee a long service life for both stationary and aircraft gas turbines. The source of this unstable flame beh ... [J. Eng. Gas Turbines Power 132, 041501 (2010)] published Tue Jan 12, 2010.