To clearly clarify the effects of different upstream boundary layer thickness and tip clearance size to the detailed tip flow field and flow mechanism, numerical simulations are performed on a subsonic compressor rotor, which is used for low-speed model testing of a rear stage embedded in a modern high-pressure compressor. First, available experimental data are adopted to validate the numerical method. Second, comparisons are made for tip leakage vortex (TLV) structure, the interface of leakage flow/mainflow, endwall loss, isentropic efficiency and pressure-rise among different operating conditions. Then, effects of different clearance sizes and inflow boundary layer thicknesses are investigated. Finally, the self-induced unsteadiness at one near-stall (NS) operating condition is studied for different cases. Results show that the increment of tip clearance size has a deleterious effect on rotor efficiency and pressure-rise performance over the whole operating range, while thickening the inflow boundary layer is almost the same except that its pressure-rise performance will be increased at mass flow rate larger than design operating condition. Self-induced unsteadiness occurs at NS operating conditions, and its appearance largely depends on tip clearance size, while the effect of upstream boundary layer thickness is little.
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December 2014
Research-Article
Investigations on the Effects of Inflow Condition and Tip Clearance Size to the Performance of a Compressor Rotor
Chenkai Zhang,
Chenkai Zhang
1
College of Energy and Power Engineering,
and Astronautics,
Yudao Street,
Nanjing,
e-mail: zckkite2006@126.com
Nanjing University of Aeronautics
and Astronautics,
Yudao Street,
Nanjing,
China
e-mail: zckkite2006@126.com
1Corresponding author.
Search for other works by this author on:
Jun Hu,
Jun Hu
College of Energy and Power Engineering,
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
Nanjing University of Aeronautics
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
China
;Co-Innovation Center for Advanced Aero-Engine
,Beijing
, China
Search for other works by this author on:
Zhiqiang Wang
Zhiqiang Wang
College of Energy and Power Engineering,
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
Nanjing University of Aeronautics
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
China
Search for other works by this author on:
Chenkai Zhang
College of Energy and Power Engineering,
and Astronautics,
Yudao Street,
Nanjing,
e-mail: zckkite2006@126.com
Nanjing University of Aeronautics
and Astronautics,
Yudao Street,
Nanjing,
China
e-mail: zckkite2006@126.com
Jun Hu
College of Energy and Power Engineering,
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
Nanjing University of Aeronautics
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
China
;Co-Innovation Center for Advanced Aero-Engine
,Beijing
, China
Zhiqiang Wang
College of Energy and Power Engineering,
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
Nanjing University of Aeronautics
and Astronautics,
Jiangsu Province Key Laboratory
of Aerospace Power System,
Yudao Street,
Nanjing,
China
1Corresponding author.
Contributed by the Turbomachinery Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received May 10, 2014; final manuscript received June 12, 2014; published online July 15, 2014. Editor: David Wisler.
J. Eng. Gas Turbines Power. Dec 2014, 136(12): 122608 (9 pages)
Published Online: July 15, 2014
Article history
Received:
May 12, 2014
Revision Received:
June 12, 2014
Citation
Zhang, C., Hu, J., and Wang, Z. (July 15, 2014). "Investigations on the Effects of Inflow Condition and Tip Clearance Size to the Performance of a Compressor Rotor." ASME. J. Eng. Gas Turbines Power. December 2014; 136(12): 122608. https://doi.org/10.1115/1.4027906
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