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Keywords: air
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Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. November 2011, 133(11): 111702.
Published Online: May 17, 2011
...W. H. Heiser; T. Huxley; J. W. Bucey This paper presents the results of a fundamental, comprehensive, and rigorous analytical and computational examination of the performance of the Brayton propulsion and power cycle employing real air as the working fluid. This approach capitalizes on the benefits...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2004, 126(3): 590–603.
Published Online: August 11, 2004
... that there are preferential β orientations for which crack growth is minimized at the blade tip. To assess blade fatigue life and durability extensive testing of uniaxial single crystal specimens with different orientations has been tested over a wide temperature range in air and hydrogen. A detailed analysis...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2004, 126(3): 498–506.
Published Online: August 11, 2004
... flow and pressure loss estimation, and is a useful tool in the field of innovative gas turbine cycle analysis, mainly when alternative fluids are considered. In this case, in fact, the conventional semi-empirical data based on the use of air as traditional coolant and working media are no longer...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2003, 125(3): 742–750.
Published Online: August 15, 2003
...S. P. Lukachko; D. R. Kirk; I. A. Waitz Demand for greater engine efficiency and thrust-to-weight ratio has driven the production of aircraft engines with higher core temperatures and pressures. Such engines operate at higher fuel-air ratios, resulting in the potential for significant heat release...
Journal Articles
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. July 2003, 125(3): 854–858.
Published Online: August 15, 2003
... reduction. The approach is suitable for numerical computations of large-scale problems and is more accurate than the finite difference approach of computing Jacobians. The method is demonstrated via a nonlinear reaction mechanism for the synthesis of Bromide acid and a H 2 /Air mechanism using a modified...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2003, 125(2): 547–554.
Published Online: April 29, 2003
...T. Shamim; V. C. Medisetty The automotive catalytic converters, which are employed to reduce engine exhaust emissions, operate in transient conditions under all modes of operation. The fluctuation in air-fuel ratio is a major contributor to these transients. The consideration of these transients...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. January 2003, 125(1): 201–215.
Published Online: December 27, 2002
... of the compressed air for humidification. Thermodynamically, it can be shown that not all the air needs to be passed through the humidification system to attain the intrinsic good flue gas heat recovery of an EvGT cycle. The system presented also includes live steam production and superheating by heat from...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. January 2003, 125(1): 216–227.
Published Online: December 27, 2002
... testing stage. This paper presents calculation results of a new humidification strategy based on part-flow humidification. This strategy involves using only a fraction of the compressed air for humidification. Thermodynamically, it can be shown that not all the air needs to be passed through...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. January 2003, 125(1): 374–384.
Published Online: December 27, 2002
...D. Bu¨cker; R. Span; W. Wagner A new model for the prediction of caloric properties of moist air and combustion gases has been developed. The model very accurately predicts ideal gas caloric properties of undissociated gas mixtures at temperatures from 200 K to 3300 K. In addition, a simple model...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2002, 124(4): 874–880.
Published Online: September 24, 2002
... and Exhibition, New Orleans, LA, June 4–7, 2001; Paper 01-GT-115. Manuscript received by IGTI, December 2000, final revision, March 2001. Associate Editor: R. Natole. 04 June 2001 01 December 2000 01 March 2001 24 09 2002 air film flow liquid films aerospace engines two-phase...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2002, 124(4): 784–791.
Published Online: September 24, 2002
... and impingement cooling, with one and two rows of secondary air inlet holes in the mixing zone, have been measured using intrusive and noninstrusive measurement techniques. The results elucidate the interrelations between the cooling concepts and the respective mixing and emissions performances. The measurements...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2001, 123(2): 460–464.
Published Online: January 23, 2001
... losses computational fluid dynamics air A method for predicting the thermal performance of cooling towers must include accurate representations of the tower’s airflow resistances. Since inlet losses constitute a significant portion of these resistances, the importance of an accurate model...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2001, 123(2): 327–332.
Published Online: January 1, 2001
...J. J. McGuirk; A. Spencer The paper focusses attention on alternative approaches for treating the coupling between the flow in the annulus supply ducts and the jets which enter combustor primary and dilution zones through air admission ports. Traditionally CFD predictions of combustor flows have...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2001, 123(2): 303–307.
Published Online: December 1, 2000
...R. Homma; J.-Y. Chen Two new 14-step and 16-step reduced mechanisms for methane-air combustion were systematically developed by assuming the quasisteady state for 26–28 species in the starting mechanism. A series of comparison between the reduced mechanisms and the starting mechanism was carried...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2001, 123(4): 803–809.
Published Online: October 1, 2000
...G. Mori; S. Razore; M. Ubaldi; P. Zunino An integrated experimental-numerical procedure has been developed for fuel-air mixing prediction in a heavy-duty gas turbine burner. Optical measurements of the degree of mixing have been performed in a full-scale test rig operating with cold flow...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. April 2001, 123(2): 265–270.
Published Online: August 1, 2000
... is applicable to gas turbines with various types of cooling: open-air, closed-steam, and open-steam cooling. The open-air cooling technology has found the most wide application in current gas turbines. Using this type of cooling as an example, the potential of the developed method is shown. Losses...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2000, 122(3): 405–411.
Published Online: May 15, 2000
...Anuj Bhargava; Med Colket; William Sowa; Kent Casleton; Dan Maloney An experimental and modeling study has been performed jointly by UTRC and DOE-FETC to determine the effect of humidity in the combustion air on emissions and stability limits of gas turbine premixed flames. This study focuses...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. July 2000, 122(3): 493–501.
Published Online: October 21, 1999
... are probably sharper than in the actual air/fuel vapor mixture owing to the much greater molecular diffusivity. However, many inhomogeneities are on a scale of the order of 3 to 15 mm, which is much larger than the typical diffusive length scale during this time interval (of the order of 1 mm). Hence, except...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. January 2001, 123(1): 41–49.
Published Online: October 20, 1999
...A. Eroglu; K. Do¨bbeling; F. Joos; P. Brunner A novel fuel-air mixing technique on the basis of vortex generators has been developed and successfully implemented in the worlds first lean-premix reheat combustor of ABB’s GT24/GT26 series industrial gas turbines. This technique uses a special...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. January 2001, 123(1): 139–145.
Published Online: July 27, 1999
.... Assanis. 26 April 1999 27 July 1999 turbulence engines flow measurement air engineering It is an un-ended target for an engine researcher to further promote the performance, as well as to further reduce the emission, of existing engines. Controlling the in-cylinder flow...