This paper concentrates on the stall inception analysis of transonic compressors with chordwise and axial sweep. A new prediction approach of stall inception is developed based on global stability analysis and immersed boundary theory, which makes it possible to take both the concrete blade geometry and the complicated base flow into consideration. The prediction of stall inception boils down to an eigenvalue problem. Spectral collocation method is adopted to discretize the eigenvalue equations and the eigenvalues are solved by using singular value decomposition method. The developed prediction approach is validated on two different typical transonic compressors, a single stage compressor and an isolated-rotor compressor, which shows a good agreement with the experimental data. The latter is adopted as a baseline rotor for the investigation of chordwise and axial sweep. By adjusting the stacking line of the baseline rotor, a series of swept rotors are modeled and the stall inception behavior of them is predicted by using the developed approach. The comparison of stall inception behaviors between these rotors is presented, and in combination with steady flow analyses, the effects of sweep features on the stall inception in transonic compressors are discussed.
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April 2018
Research-Article
Stall Inception Analysis of Transonic Compressors With Chordwise and Axial Sweep
Chen He,
Chen He
School of Energy and Power Engineering,
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: hechen@buaa.edu.cn
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: hechen@buaa.edu.cn
Search for other works by this author on:
Dakun Sun,
Dakun Sun
School of Energy and Power Engineering,
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sundk@buaa.edu.cn
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sundk@buaa.edu.cn
Search for other works by this author on:
Xiaofeng Sun
Xiaofeng Sun
School of Energy and Power Engineering,
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sunxf@buaa.edu.cn
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sunxf@buaa.edu.cn
Search for other works by this author on:
Chen He
School of Energy and Power Engineering,
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: hechen@buaa.edu.cn
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: hechen@buaa.edu.cn
Dakun Sun
School of Energy and Power Engineering,
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sundk@buaa.edu.cn
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sundk@buaa.edu.cn
Xiaofeng Sun
School of Energy and Power Engineering,
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sunxf@buaa.edu.cn
Beihang University,
No. 37 Xueyuan Road, Haidian District,
Beijing 100191, China
e-mail: sunxf@buaa.edu.cn
1Corresponding author.
Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received October 22, 2017; final manuscript received November 3, 2017; published online February 21, 2018. Editor: Kenneth Hall.
J. Turbomach. Apr 2018, 140(4): 041009 (11 pages)
Published Online: February 21, 2018
Article history
Received:
October 22, 2017
Revised:
November 3, 2017
Citation
He, C., Sun, D., and Sun, X. (February 21, 2018). "Stall Inception Analysis of Transonic Compressors With Chordwise and Axial Sweep." ASME. J. Turbomach. April 2018; 140(4): 041009. https://doi.org/10.1115/1.4038873
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