Experiments have been performed on the low speed research compressor (LSRC) at General Electric Aircraft Engines to investigate the effects of flow coefficient, stagger angle, and tip clearance on tip vortex. Time resolved casing pressure distributions over the third stage rotor have been acquired with high-frequency-response pressure transducers. Also, tip vortex strength and trajectory have been estimated from the casing pressure fluctuations which have been obtained simultaneously from various axial locations. As flow coefficient decreases, tip vortex gets strengthened and migrates upstream. The stagger angle increase weakens the tip vortex and moves it downstream slightly because the blade loading is decreased. However, tip leakage vortex is influenced mainly by tip clearance, and there exists a “critical” tip clearance which determines the type of tip vortex trajectory (“straight” or “kinked”). As predicted by others, tip vortex gets strengthened with increasing tip clearance. However, unlike the predictions, the tip vortex trajectory moves upstream with increasing tip clearance. Furthermore, with tip clearance above a “critical” value, the tip vortex trajectory is no longer straight but shows a kink in the passage.
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November 2006
Technical Papers
Influence of Flow Coefficient, Stagger Angle, and Tip Clearance on Tip Vortex in Axial Compressors
Yong Sang Yoon,
Yong Sang Yoon
School of Mechanical and Aerospace Engineering,
e-mail: perfect1@snu.ac.kr
Seoul National University
, San 56-1, Shillim dong, Kwanak gu, Seoul, 151-744, Korea
Search for other works by this author on:
Seung Jin Song,
Seung Jin Song
School of Mechanical and Aerospace Engineering,
Seoul National University
, San 56-1, Shillim dong, Kwanak gu, Seoul, 151-744, Korea
Search for other works by this author on:
Hyoun-Woo Shin
Hyoun-Woo Shin
GE Transportation
, Aircraft Engines, 1 Neumann Way, Cincinnati, Ohio, 45215
Search for other works by this author on:
Yong Sang Yoon
School of Mechanical and Aerospace Engineering,
Seoul National University
, San 56-1, Shillim dong, Kwanak gu, Seoul, 151-744, Koreae-mail: perfect1@snu.ac.kr
Seung Jin Song
School of Mechanical and Aerospace Engineering,
Seoul National University
, San 56-1, Shillim dong, Kwanak gu, Seoul, 151-744, Korea
Hyoun-Woo Shin
GE Transportation
, Aircraft Engines, 1 Neumann Way, Cincinnati, Ohio, 45215J. Fluids Eng. Nov 2006, 128(6): 1274-1280 (7 pages)
Published Online: March 27, 2006
Article history
Received:
April 27, 2005
Revised:
March 27, 2006
Citation
Yoon, Y. S., Song, S. J., and Shin, H. (March 27, 2006). "Influence of Flow Coefficient, Stagger Angle, and Tip Clearance on Tip Vortex in Axial Compressors." ASME. J. Fluids Eng. November 2006; 128(6): 1274–1280. https://doi.org/10.1115/1.2354522
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