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Keywords: unsteady flow
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2025, 147(7): 071001.
Paper No: TURBO-24-1177
Published Online: November 22, 2024
... and delayed detached eddy simulation (DDES) methods), results show that the GAS method can significantly improve the prediction accuracy for stall margin and radial distribution of flow parameters. Then, the effect of RSI on the secondary flow structures is analyzed based on the unsteady flow field simulated...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2025, 147(5): 051012.
Paper No: TURBO-24-1223
Published Online: November 14, 2024
... on the steady-state duct flow is within the range of expectations. Less is known from the open literature with regard to the unsteady character of the flow in such a setup. Three distinct unsteady flow phenomena caused by the serpentine shape of the duct are identified up- and downstream of the low pressure...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2025, 147(5): 051001.
Paper No: TURBO-24-1119
Published Online: November 12, 2024
.... The effects of losses on unsteady flow transients are assessed by comparing the transient responses when a step reduction of throttle area is applied. The comparisons show that the change in loss magnitude has weak effects on transient response if the change of loss does not significantly change the system...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2025, 147(1): 011010.
Paper No: TURBO-23-1336
Published Online: September 3, 2024
... vibration, and the effect of high-pressure jet on turbine performance using numerical simulation of unsteady flow fields. The results indicate that the jet flow has a substantial impact on dampening the blade vibrations. The harmonic pressure amplitude at the monitor point located within the high blade...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. October 2024, 146(10): 101008.
Paper No: TURBO-24-1006
Published Online: May 8, 2024
... 03 04 2024 03 04 2024 08 05 2024 Graphical Abstract Figure computational fluid dynamics (CFD) fluid dynamics and heat transfer phenomena in compressor and turbine components of gas turbine engines energy dissipation turbulence unsteady flow High-fidelity...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. August 2024, 146(8): 081009.
Paper No: TURBO-23-1156
Published Online: April 4, 2024
... rotating instabilities unsteady flow tip clearance flow compressor stall surge and operability computational fluid dynamics (CFD) Deutsche Forschungsgemeinschaft 10.13039/501100001659 426295581 The rotor tip flow field in axial compressors can be subject to significant...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071004.
Paper No: TURBO-22-1301
Published Online: February 9, 2023
... of the triangle near the pressure surface of the stator, while on the suction surface, points also exist on the left side of the triangle, which can be observed in Fig. 17( b ) . These results are useful in unsteady flow-field analysis. Further investigations of the influence of deterministic stress anisotropy...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2021, 143(3): 031008.
Paper No: TURBO-20-1186
Published Online: March 1, 2021
... flow (dynamics) simulation unsteady flow fluid dynamics and heat transfer phenomena in compressor and turbine components of gas turbine engines Turbomachinery flows are complex and can include separations, anisotropy, high levels of freestream turbulence and transition. Standard modeling...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2020, 142(12): 121006.
Paper No: TURBO-19-1298
Published Online: November 9, 2020
... urbomachinery . 25 11 2019 17 07 2020 20 07 2020 09 11 2020 compressors wakes flow (dynamics) turbulence wake turbulence unsteady flow boundary layer development energy dissipation simulation computational fluid dynamics (CFD) The size of the rotor-stator axial...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2020, 142(9): 091011.
Paper No: TURBO-20-1060
Published Online: August 25, 2020
...: jb753@cam.ac.uk Email: gp10006@cam.ac.uk Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the J ournal of T urbomachinery . 27 02 2020 09 04 2020 09 04 2020 25 08 2020 heat transfer film cooling unsteady flow...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2012, 134(5): 051003.
Published Online: May 7, 2012
... to be entrained into the rotor secondary flow. 07 01 2011 08 01 2011 07 05 2012 07 05 2012 endwall cooling leakage flows secondary flows unsteady flow Turbine entry temperatures have been steadily rising over the last 20 years, corresponding to higher cycle efficiencies...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2012, 134(4): 041002.
Published Online: July 19, 2011
... unsteady. The unsteady flow interactions between the turbine and the exhaust system have a strong impact on the blade loading or blade aerodynamic force. This paper describes the unsteady flow interactions between a single-stage axial turbine and an exhaust system. The experimental and numerical studies...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2012, 134(2): 021022.
Published Online: June 30, 2011
.... This allows the exhaust pulses originating from the internal combustion exhaust to be preserved. Since the turbine is fed by two separate unsteady flows, the phase difference between the exhaust pulses entering the turbine rotor will produce a momentary imbalance in the flow conditions around the periphery...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2009, 131(3): 031015.
Published Online: April 20, 2009
... simulation heat transfer numerical analysis unsteady flow hot streak three dimensional numerical simulation gas turbine The inlet temperature field of gas turbine is usually nonuniform or distorted, as the combustor exit flow has both the circumferential and radial temperature gradients...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. January 2009, 131(1): 011018.
Published Online: November 10, 2008
... interchange. 22 06 2007 18 08 2007 10 11 2008 compressors flow instability turbomachinery vortices casing treatment axial compressor unsteady flow experimental investigation The experimental investigations in the past were mostly concerned with overall compressor...