It is well recognized that vorticity and vortical structures appear inevitably in viscous compressor flows and have strong influence on the compressor performance. However, conventional analysis and design procedure cannot pinpoint the quantitative contribution of each individual vortical structure to the integrated performance of a compressor, such as the stagnation-pressure ratio and efficiency. We fill this gap by using the so-called derivative-moment transformation, which has been successfully applied to external aerodynamics. We show that the compressor performance is mainly controlled by the radial distribution of azimuthal vorticity, of which an optimization in the through-flow design stage leads to a simple Abel equation of the second kind. The satisfaction of the equation yields desired circulation distribution that optimizes the blade geometry. The advantage of this new procedure is demonstrated by numerical examples, including the posterior performance check by 3D Navier–Stokes simulation.
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e-mail: jzwu@mech.pku.edu.cn
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April 2008
Research Papers
Vorticity Dynamics in Axial Compressor Flow Diagnosis and Design
Yantao Yang,
Yantao Yang
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
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Hong Wu,
Hong Wu
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
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Qiushi Li,
Qiushi Li
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
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Sheng Zhou,
Sheng Zhou
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
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Jiezhi Wu
Jiezhi Wu
Institute of Engineering Research,
e-mail: jzwu@mech.pku.edu.cn
Peking University
, Beijing, 100871, P.R.C.
Search for other works by this author on:
Yantao Yang
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
Hong Wu
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
Qiushi Li
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
Sheng Zhou
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.
Jiezhi Wu
Institute of Engineering Research,
Peking University
, Beijing, 100871, P.R.C.e-mail: jzwu@mech.pku.edu.cn
J. Fluids Eng. Apr 2008, 130(4): 041102 (9 pages)
Published Online: April 3, 2008
Article history
Received:
November 29, 2006
Revised:
November 7, 2007
Published:
April 3, 2008
Connected Content
A companion article has been published:
Vorticity Dynamics in Axial Compressor Flow Diagnosis and Design—Part II: Methodology and Application of Boundary Vorticity Flux
Citation
Yang, Y., Wu, H., Li, Q., Zhou, S., and Wu, J. (April 3, 2008). "Vorticity Dynamics in Axial Compressor Flow Diagnosis and Design." ASME. J. Fluids Eng. April 2008; 130(4): 041102. https://doi.org/10.1115/1.2903814
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