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Keywords: Vibration
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Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. February 2023, 145(2): 024501.
Paper No: GTP-22-1112
Published Online: November 29, 2022
...Patrick B. Lamas; Rodrigo Nicoletti The longitudinal periodicity of the rotating elements in a rotating machine can impose band gaps (modal spacing) on the frequency spectrum of the system. These band gaps are characterized by a large distance between two adjacent modes with a low vibrating...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. November 2022, 144(11): 111014.
Paper No: GTP-22-1308
Published Online: September 22, 2022
... downstream of the compressor makes more complex the dynamic behavior of the whole system during transients, thus significantly increasing surge onset risk. The activity or the main goal is to obtain a suitable quantitative indicator capable to detect in advance surge inception by relying only on vibrational...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. May 2022, 144(5): 051003.
Paper No: GTP-21-1246
Published Online: February 21, 2022
...Patrick B. Lamas; Rodrigo Nicoletti Modal spacing (band gaps) in the frequency spectrum of rotating machines can be imposed by geometric periodicity. By designing the rotor with a geometry that repeats periodically, we can impose to the vibration response of the rotor a modal “gap” considerably...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. September 2021, 143(9): 091024.
Paper No: GTP-20-1293
Published Online: August 9, 2021
... the overall vibration of the combined rotor significantly in practice. This paper studies the modeling of the crack on the bolt and nonlinear dynamic behaviors of the cracked bolt-disk rotor system. The circumferential bolts with a transverse open crack are treated as several bar elements under the assumption...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011004.
Paper No: GTP-18-1279
Published Online: September 14, 2018
... vibration Vibration Flow induced noise In turbomachinery, randomly distributed factors, as the airflow, cause a random excitation of bladed disks, which have generally a nonlinear mechanical behavior. In the design process of such bladed disks, one uses mainly deterministic methods, linearized...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011009.
Paper No: GTP-18-1293
Published Online: September 14, 2018
...-to-seal clearances to match the requirements of power output, efficiency, and operational life. Conversely, this design approach leads to stability issues [ 1 ]. Therefore, the prediction of labyrinth seals dynamics needs much more attention. Flow induced vibration Modeling Structural dynamics...
Journal Articles
Publisher: ASME
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
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2019, 141(1): 011008.
Paper No: GTP-18-1289
Published Online: September 14, 2018
...] Ewins , D. J. , 1969 , “ The Effects of Detuning Upon the Forced Vibrations of Bladed Disks ,” J. Sound Vib. , 9 ( 1 ), pp. 65 – 79 . 10.1016/0022-460X(69)90264-8 [2] Jugde , J. , Pierre , C. , and Mehmed , O. , 2001 , “ Experimental Investigation of Mode Localization and Forced...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. December 2018, 140(12): 122501.
Paper No: GTP-18-1005
Published Online: August 6, 2018
... conversion Gas turbine technology Heat recovery Modeling Power systems Temperature Thermal Thermodynamics Turbines Two-phase Vibration Over the past years, the consumption of fossil fuel continues to grow [ 1 ] due to the increase in energy demand in both heat and electricity forms...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082506.
Paper No: GTP-17-1530
Published Online: May 14, 2018
... Labyrinth Seal Inlet Swirl Velocity ,” ASME J. Vib. Acoust. , 112 ( 3 ), pp. 380 – 383 . 10.1115/1.2930519 [7] Kirk , R. G. , Raju , K. V. S. , and Ramesh , K. , 1999 , “ PC-Based Analysis of Turbomachinery Vibration ,” Shock Vib. Dig. , 31 ( 6 ), pp. 449 – 454 . 10.1177...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082701.
Paper No: GTP-17-1400
Published Online: April 26, 2018
... and in steam up to 42 krpm are presented to demonstrate the performance of this bearing. It is shown to have low subsynchronous vibration and reasonable damping through rigid shaft critical speeds. The tests of this initial prototype were conducted with the 24 krpm, low-speed test setup shown in Fig. 5...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2018, 140(7): 072506.
Paper No: GTP-17-1119
Published Online: April 16, 2018
... monitoring technique is spreading for health monitoring of the turbine blades. One of the main challenges of BTT method is identification of vibration parameters from one per revolution samples which is quite below Nyquist sampling rate. In this study, a new method for derivation of blade asynchronous...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. August 2018, 140(8): 082501.
Paper No: GTP-17-1106
Published Online: April 12, 2018
... as computational power in computers rapidly increases [ 12 ]. Experimental Film Flow induced vibration Fluids Measurement techniques Modeling Structural dynamics Vibration Flow induced noise 20 03 2017 01 11 2017 Contributed by the Structures and Dynamics Committee of ASME...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2018, 140(7): 072505.
Paper No: GTP-17-1483
Published Online: April 10, 2018
... and in-service wear. The need to understand the effects of mistuning is important since it has been shown that even for small levels of mistuning vibration localization can result. Due to the inherent randomness of mistuning, it must be studied stochastically with many mistuning realizations and levels. By being...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2018, 140(7): 072501.
Paper No: GTP-16-1443
Published Online: April 10, 2018
...M. J. Qu; G. Chen A finite element (FE) model of the rotor tester of an aero-engine, having a thin-walled casing structure, mounted with the way of an actual engine, is developed to simulate the intrinsic vibration characteristics under actual engine-mounting condition. First, a modal experiment...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2018, 140(7): 072502.
Paper No: GTP-17-1003
Published Online: April 10, 2018
... not provide enough damping to stabilize the rotor [ 17 ]. Given that the case study rotor traverses its first critical speed, the critical speed must be located at a target value, and that synchronous rotor vibration as well as the rotordynamic instability are of importance, the four pad-LBP was selected...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 062505.
Paper No: GTP-17-1539
Published Online: April 5, 2018
... forced response functions (FRF) of the test case with a nominal damper are available for comparison. The comparison of different damper configurations offers a “high-level” validation of the pre-optimization procedure and highlights the strong influence of the blades mode of vibration on the damper...
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 062401.
Paper No: GTP-17-1419
Published Online: February 27, 2018
... OURNAL OF E NGINEERING FOR G AS T URBINES AND P OWER . Manuscript received July 31, 2017; final manuscript received September 11, 2017; published online February 27, 2018. Editor: David Wisler. 31 07 2017 11 09 2017 Experimental Film Vibration Electrical submersible...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2018, 140(6): 062602.
Paper No: GTP-17-1478
Published Online: January 17, 2018
...; published online January 17, 2018. Editor: David Wisler. 25 08 2017 25 09 2017 Equilibrium Finite element Finite element methods Fluids Modeling Structural dynamics Vibration Electric submersible pumps (ESPs) are widely used in oil production as dynamic pumps...