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Keywords: and operability
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Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. November 2024, 146(11): 111001.
Paper No: TURBO-23-1125
Published Online: May 23, 2024
...Laura McLaughlin; Stephen Spence; Daniel Rusch; Charles Stuart; Marco Geron; Kwok Kai So; Magnus Fischer Often, an improvement in performance at one operating point in a compressor/turbine operating map will lead to a reduction in performance at another area. For example, improving the efficiency...
Journal Articles
Publisher: ASME
Article Type: Technical Briefs
J. Turbomach. October 2024, 146(10): 104501.
Paper No: TURBO-22-1089
Published Online: April 23, 2024
... operating points close to compressor stall or off-design operating points in steam turbines. In the present work, it is shown that such instabilities do not depend on the blading but also occur in blading-free flow channels. The theoretical proof is carried out with the tools and computational programs...
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
..., do not necessarily or distinctly occur in every compressor and usually last for a long period without posing serious threats to stable operation. The present study aims at numerically characterizing prestall disturbances in detail in a compressor stage in which they have been experimentally observed...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. June 2024, 146(6): 061013.
Paper No: TURBO-23-1260
Published Online: January 29, 2024
... over the construction and operation of a rig, which for the first time allows for accurate measurement of water extraction and rapid testing of a variety of bleed slot geometries. Using this test rig, it was found that the use of a bleed slot behind the rotor increases water extraction by up to 40...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. April 2024, 146(4): 041006.
Paper No: TURBO-23-1255
Published Online: December 15, 2023
... 2023 17 11 2023 15 12 2023 centrifugal compressors and pumps compressor stall surge and operability computational fluid dynamics (CFD) Centrifugal compressors are used in various applications, such as aircraft engines and turbochargers for automobiles. However, when...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2024, 146(2): 021011.
Paper No: TURBO-23-1203
Published Online: November 16, 2023
... will be called “aerodynamically balanced.” The new design method converges in a few iterations and is physically intuitive because it accounts for the real changes in the 3D area ratio that directly controls the shock structure. Specifically, changes in both the spanwise 3D flow and the rotor’s operating...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2023, 145(12): 121006.
Paper No: TURBO-22-1024
Published Online: October 19, 2023
... 05 02 2022 01 08 2023 01 08 2023 19 10 2023 compressor stall surge and operability computational fluid dynamics (CFD) fluid dynamics and heat transfer phenomena in compressor and turbine components of gas turbine engines Rolls-Royce 10.13039/501100000767...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. December 2023, 145(12): 121011.
Paper No: TURBO-23-1175
Published Online: October 19, 2023
... rotating stall centrifugal compressors and pumps compressor stall surge and operability It is common to observe that centrifugal compressor pressure rise characteristic has a sudden pressure loss. It causes a slope change of the characteristic, rolling over from “−”ve to “+”ve at high-speed...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. August 2023, 145(8): 081014.
Paper No: TURBO-22-1277
Published Online: May 22, 2023
... compressor stall surge and operability National Natural Science Foundation of China 10.13039/501100001809 52006217 51736001 Surge is a compression system instability that appears at low mass flowrate conditions and may cause severe damage to a compressor or mechanical failure...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071017.
Paper No: TURBO-22-1184
Published Online: April 3, 2023
... clearance, a drastic decrease in the static pressure rise coefficient near the surge point was observed. At this operating condition, large, unsteady pressure fluctuation at the blade tip was confirmed, and the occurrence of tip leakage vortex breakdown was clarified by unsteady multipoint pressure...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071006.
Paper No: TURBO-22-1334
Published Online: February 10, 2023
... (IGTI) of ASME for publication in the J ournal of T urbomachinery . 15 11 2022 12 01 2023 12 01 2023 10 02 2023 cavity and leaking flows centrifugal compressors and pumps compressor stall surge and operability computational fluid dynamics (CFD) impact on cavity...
Journal Articles
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. July 2023, 145(7): 071003.
Paper No: TURBO-22-1288
Published Online: February 9, 2023
.... The results indicated an increase in rotor pressure ratio at all operating conditions with the application of the casing treatment. The stall margin also increased at all rotor speeds. Efficiency increases were observed with the casing treatment at design conditions and some off-design conditions. Numerical...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2023, 145(5): 051010.
Paper No: TURBO-22-1284
Published Online: November 25, 2022
... urbomachinery . 12 09 2022 14 10 2022 18 10 2022 25 11 2022 compressor surge rotating stall centrifugal compressors and pumps compressor stall surge and operability Turbocharging is an enabling technology to decarbonize the automotive industry and help transition...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2023, 145(5): 051003.
Paper No: TURBO-22-1146
Published Online: November 8, 2022
... is observed as the tip relative Mach number nears unity. Long length-scale modal oscillations can be detected only at the transonic operating condition while spike disturbances are identified as the precursor to instability at subsonic and supersonic tips relative Mach numbers. Finally, the impeller...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. May 2023, 145(5): 051004.
Paper No: TURBO-22-1147
Published Online: November 8, 2022
... component centrifugal compressors and pumps compressor stall surge and operability As reported in Part I of the paper, the compressor surge signature varies as impeller inlet tip flow changes from subsonic to supersonic conditions. At subsonic and supersonic impeller inlet tip conditions...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. March 2023, 145(3): 031015.
Paper No: TURBO-22-1248
Published Online: November 3, 2022
... Axial Compressor: Effects of Tip Gap Size on the Tip Clearance Flow Structure at Near Stall Operation ,” Proceedings oProceedings of the ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. Volume 2D: Turbomachinery , Dusseldorf, Germany , June 16–20 , Vol. 45639, p. V02DT44A040...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. February 2023, 145(2): 021012.
Paper No: TURBO-20-1233
Published Online: October 20, 2022
...Krishan S. Chana; Robert J. Miller Reaction is the fundamental parameter by which the asymmetry of the velocity triangle of a stage is set. Little is understood about the effect that a reaction has on either the efficiency or the operating range of a compressor. A particular difficulty...
Journal Articles
Publisher: ASME
Article Type: Research Papers
J. Turbomach. September 2022, 144(9): 091015.
Paper No: TURBO-22-1072
Published Online: August 1, 2022
...-annulus, unsteady CFD simulations are used to explain the stall inception mechanisms for the fan at low- and high-speed operating points. A combination of steady and unsteady simulations shows that the fan is predicted to be sensitive to leading edge damage at low-speed, but insensitive at high-speed...