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Keyword: aerodynamics
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Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2019, 141(5): 051003.
Paper No: GTP-18-1212
Published Online: November 22, 2018
... resolving the small scale and large number of cooling holes is impractical at the preliminary design phase. This paper presents an alternative approach for predicting aerodynamic performance of TCC systems using a “smart” porous media (PM) to replace regions of cooling holes. Numerically CFD defined...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2019, 141(4): 041003.
Paper No: GTP-18-1560
Published Online: November 1, 2018
...Chongfei Duan; Hisataka Fukushima; Kiyoshi Segewa; Takanori Shibata; Hidetoshi Fujii The basic principle of a distinct idea to reduce an aerodynamic mixing loss induced by the difference in tangential velocity between mainstream flow and rotor shroud leakage flow is presented in “Part I: Design...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2019, 141(4): 041002.
Paper No: GTP-18-1578
Published Online: November 1, 2018
... aerodynamic loss due to mixing with the mainstream flow. In order to reduce this mixing loss, two distinct ideas for rotor shroud exit cavity geometries were investigated using computational fluid dynamics (CFD) analyses and experimental tests. One idea was an axial fin placed from the shroud downstream...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2016, 138(11): 112603.
Paper No: GTP-16-1159
Published Online: June 1, 2016
... Aerodynamics Aerospace Design optimization Engines Experimental Gas turbine technology Particulate Propulsion systems One common source of foreign object damage encountered by aircraft with gas turbine engines is sand ingestion, which often occurs when these aircraft operate in arid or desert...
Journal Articles
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. May 2012, 134(5): 054501.
Published Online: March 6, 2012
... of a High Fidelity Aero-Thermodynamic Turbofan Engine Simulation,” ASME Turbo Expo, Jun. 6-10, Vancouver, Canada, Paper No. GT2011-46661). 22 06 2011 05 08 2011 06 03 2012 06 03 2012 aerodynamics flow simulation gas turbines jet engines reduced order systems...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. May 2012, 134(5): 052504.
Published Online: February 29, 2012
... to correctly evaluate the impinging jet mass flow rate, the characterization of holes discharge coefficient is a compulsory activity. In this work, an aerodynamic analysis of jet arrays for active clearance control was performed; the aim was the definition of a correlation for the discharge...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2012, 134(4): 042603.
Published Online: February 1, 2012
... aspect of this paper is that the effects of load types, namely resistive heating, battery charging, and grid connection were also investigated. It was shown that major contributors to improved starting performance are aerodynamic improvements, reduction of inertia, and simply changing the pitch angle of...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 032401.
Published Online: January 3, 2012
... provided. A particular emphasis will be on the capabilities of modern air filtration systems. 01 05 2011 01 05 2011 03 01 2012 03 01 2012 aerodynamics blades compressors gas turbines maintenance engineering surface roughness Fouling of compressor blades is an...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 032504.
Published Online: January 3, 2012
.... Probabilistic simulation methods allow for the generation of a sampled set of blades that statistically corresponds to the measured one. This technique was applied to generate 4000 sampled blades in order to investigate the influence of a nonaxisymmetric blading. It was found that the aerodynamic performance is...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. March 2012, 134(3): 032502.
Published Online: December 28, 2011
... 2011 23 06 2011 28 12 2011 28 12 2011 abrasion aerodynamics aerospace components aerospace propulsion friction machine bearings rotors turbomachinery hybrid air foil bearing oil-free aero-propulsion Air/gas foil bearings (AFBs) have shown promise in high...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. December 2011, 133(12): 122502.
Published Online: August 26, 2011
...Kwen Hsu; Daniel Hoyniak The blade geometric variations are usually ignored in the prediction of bladed disk aerodynamic damping values. This situation is the result of the high computational cost associated with the full-annulus unsteady flow CFD models required to account for these blade...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. October 2011, 133(10): 101501.
Published Online: April 25, 2011
...Stephan Burmberger; Thomas Sattelmayer A frequently employed method for aerodynamic flame stabilization in modern premixed low emission combustors is the breakdown of swirling flows; with carefully optimized tailoring of the swirler, a sudden transition in the flow field in the combustor can be...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2011, 133(9): 091301.
Published Online: April 14, 2011
... thermally grown oxide layer, the time to coating failure in TBC systems, and the evolution in the mechanical properties are presented. 04 06 2010 30 06 2010 14 04 2011 14 04 2011 aerodynamics compressive strength compressive testing creep failure analysis gas turbines...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. August 2011, 133(8): 081601.
Published Online: April 5, 2011
... (UAV) that is equipped with a seven-sensor fast-response aerodynamic probe (F7S-UAV). The autonomous UAV enables high spatial resolution ( ∼ 6.3 % of rotor diameter) measurements, which hitherto have not been accomplished around full-scale wind turbines. The F7S-UAV probe developed at ETH Zurich is the...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. July 2011, 133(7): 072501.
Published Online: March 10, 2011
... and the robustness of the optimum mistuning patterns has been demonstrated. The combined effect of the aerodynamic and structural damping on the response reduction is assessed. It is shown that the new phenomenon is of major practical significance and has to be taken into account in analysis of the...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2011, 133(4): 041601.
Published Online: November 23, 2010
...Anthony G. Sheard; Alessandro Corsini; Stefano Bianchi This study describes the development of a novel stall-detection methodology for low-speed axial-flow fans. Because aerodynamic stall is a major potential cause of mechanical failure in axial fans, effective stall-detection techniques have had...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2011, 133(4): 042504.
Published Online: November 19, 2010
... pressure through diffusion. As the operating pressure in a compressor increases, the fluid-rotor interaction at the seals and impellers become more important. Also, the new generation of megascale liquefied natural gas compressors is dependent on accurate assessment of these forces. The aerodynamic forces...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. April 2011, 133(4): 041201.
Published Online: November 19, 2010
... is feasible and capable of producing ice accretion in a simulated engine environment. As it was the first test of its kind, reporting of these preliminary test results are expected to benefit future experimenters. 19 04 2010 10 05 2010 19 11 2010 19 11 2010 aerodynamics...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. February 2011, 133(2): 021901.
Published Online: October 29, 2010
... efficient cooling systems. In this work, an aerodynamic analysis of the effusion cooling system of an aero-engine combustor liner was performed; the aim was the definition of a correlation for the discharge coefficient ( C D ) of the single effusion hole. The data were taken from a set of CFD RANS (Reynolds...
Journal Articles
Article Type: Research Papers
J. Eng. Gas Turbines Power. January 2011, 133(1): 011505.
Published Online: September 24, 2010
...Bassam Mohammad; San-Mou Jeng; M. Gurhan Andac Transverse dilution jets are widely used in combustion systems. The current research provides a detailed study of the primary jets of a realistic annular combustion chamber sector. The combustor sector comprises an aerodynamic diffuser, inlet cowl...