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Keywords: Wave propagation
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Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011007.
Paper No: GTP-18-1287
Published Online: September 14, 2018
... Finite element Flow induced vibration Fuels Modeling Periodic Thermoacoustics Unsteady Unsteady flows Vibration Wave propagation Flow induced noise Combustion Can-annular combustors are common in heavy-duty land based gas turbines. In this design, the air flows from the compressor...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 112808.
Paper No: GTP-16-1549
Published Online: July 30, 2018
... Wave propagation Mechanical, hydraulic, and electromagnetic systems all react in their own typical ways, when subjected to excitations, and generate oscillations at specific frequencies within their structure. The dynamic characterization of these systems, at nominal conditions, is generally...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 111201.
Paper No: GTP-17-1463
Published Online: July 13, 2018
... Aerothermodynamics Gas turbine technology Internal flow Wave propagation A wave rotor accomplishes compression and expansion in the same mechanical component. It operates in a gas turbine as the topping stage (Fig. 1( a ) ), and enhances the engine performance by increasing the overall pressure ratio...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 112805.
Paper No: GTP-18-1131
Published Online: July 9, 2018
... Underground injection Wave propagation Underground storage Selective catalytic reduction (SCR) technology has enabled increased diesel engine efficiency by reducing nitrogen oxide (NO x ) emissions below regulated standards in the exhaust system, thereby enabling optimization of the combustion...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2018, 140(11): 112602.
Paper No: GTP-17-1427
Published Online: July 5, 2018
... Thermoacoustics Unsteady flows Wave propagation Flow induced noise Increased aircraft operations combined with urban densification around airports lead to the definition of more and more severe environmental regulations [ 1 ]. As the dominant noise sources for an aircraft engine, jet and fan noise...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 061501.
Paper No: GTP-17-1375
Published Online: January 17, 2018
... 07 2017 10 08 2017 Thermoacoustics Wave propagation Thermoacoustic instabilities are a major threat for modern gas turbines [ 1 ]. One approach to assess thermoacoustic stability is the use of large eddy simulation [ 2 , 3 ]. However, this approach is too numerically expensive...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2018, 140(5): 051505.
Paper No: GTP-17-1274
Published Online: December 19, 2017
... OWER . Manuscript received July 4, 2017; final manuscript received August 24, 2017; published online December 19, 2017. Editor: David Wisler. 04 07 2017 24 08 2017 Combustion Modeling Thermoacoustics Unsteady Wave propagation Engineering combustion systems...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2018, 140(4): 041507.
Paper No: GTP-17-1257
Published Online: November 7, 2017
... techniques Sensors Swirling Thermoacoustics Thermodynamics Turbulence Turbulent Unsteady Unsteady flows Visualization Wave propagation Coupled behavior Combustion Avoidance of thermoacoustically driven pressure pulsations at screech level frequencies presents a considerable engineering...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2018, 140(3): 031506.
Paper No: GTP-17-1354
Published Online: October 25, 2017
... dynamics Convection Engines Flame Modeling Swirling Thermoacoustics Unsteady flows Wave propagation Coupled behavior Combustion instabilities (CI) are a serious concern in the design process of aeronautical engines. They are still hard to predict and, as a consequence, generally appear...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. April 2017, 139(4): 041501.
Paper No: GTP-16-1289
Published Online: October 18, 2016
... Temperature Thermoacoustics Wave propagation The operational range of today's gas turbine combustors is limited by their sensitivity toward the interaction between the flame and the acoustics in the combustion chamber, well known as thermoacoustics. There are two ways the flame could act as source...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. March 2017, 139(3): 031902.
Paper No: GTP-16-1311
Published Online: September 27, 2016
... Measurement techniques Wave propagation One of the most intriguing challenges in the turbomachinery field is the 3D experimental reconstruction of the unsteady flows during a machine revolution. Not only would this measurement allow an in-depth understanding of the operating conditions of the machine...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2016, 138(12): 122802.
Paper No: GTP-16-1056
Published Online: July 19, 2016
... received February 5, 2016; final manuscript received February 23, 2016; published online July 19, 2016. Editor: David Wisler. 05 02 2016 23 02 2016 Finite element methods Structural dynamics Vibration Wave propagation In helicopter and aircraft engines, the contact between...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2016, 138(11): 112601.
Paper No: GTP-15-1140
Published Online: May 24, 2016
... Gas turbine technology Modeling Thermodynamics Unsteady flows Wave propagation A wave rotor pressure exchanger can be used as a topping cycle for a gas turbine, and can enhance the power cycle performance with its internal pressure exchange. In a wave rotor, the heated gas from...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. October 2016, 138(10): 101601.
Paper No: GTP-16-1109
Published Online: April 26, 2016
... Power systems Unsteady Wave propagation NEMS Many systems and processes employ pressurized liquid media such as water, oil, fuel, and hydraulic fluid. Mechanical pumps pressurize and move such liquid media in fluid power systems. In the aerospace industry specifically, the pumps employed...
Journal Articles
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2016, 138(5): 051502.
Paper No: GTP-15-1342
Published Online: October 27, 2015
... Flame Modeling Shear Flows Thermoacoustics Unsteady flows Wave propagation Lean premixed combustion systems—as implemented in modern gas turbines—are susceptible to constructive, self-sustaining feedback couplings between the combustor's acoustic oscillations and the flame's heat-release...
Journal Articles
Article Type: Technical Papers
J. Eng. Gas Turbines Power. October 2001, 123(4): 940–950.
Published Online: October 1, 2000
... Oct. 1999; final revision received by ASME Headquarters Oct. 2000. Associate Editor: D. Wisler. 08 May 2000 01 Oct 1999 01 Oct 2000 dynamic response vibrational modes localised modes wave propagation finite element analysis mechanical testing The design...