Computational fluid dynamics calculations using high-performance parallel computing were conducted to simulate the prestall flow of a transonic compressor stage, NASA compressor Stage 35. The simulations were run with a full-annulus grid that models the 3D, viscous, unsteady blade row interaction without the need for an artificial inlet distortion to induce stall. The simulation demonstrates the development of the rotating stall from the growth of instabilities. Pressure rise performance and pressure traces are compared with published experimental data before the study of flow evolution prior to the rotating stall. Spatial fast Fourier transform analysis of the flow indicates a rotating long-length disturbance of one rotor circumference, which is followed by a spike-type breakdown. The analysis also links the long-length wave disturbance with the initiation of the spike inception. The spike instabilities occur when the trajectory of the tip clearance flow becomes perpendicular to the axial direction. When approaching stall, the passage shock changes from a single oblique shock to a dual shock, which distorts the perpendicular trajectory of the tip clearance vortex but shows no evidence of flow separation that may contribute to stall.
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October 2008
Research Papers
Prestall Behavior of a Transonic Axial Compressor Stage via Time-Accurate Numerical Simulation
Jen-Ping Chen,
Jen-Ping Chen
The Ohio State University
, Columbus, OH 43210
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Michael D. Hathaway,
Michael D. Hathaway
Army Research Laboratory, Vehicle Technology Directorate
, Cleveland, OH 44135
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Gregory P. Herrick
Gregory P. Herrick
Army Research Laboratory, Vehicle Technology Directorate
, Cleveland, OH 44135
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Jen-Ping Chen
The Ohio State University
, Columbus, OH 43210
Michael D. Hathaway
Army Research Laboratory, Vehicle Technology Directorate
, Cleveland, OH 44135
Gregory P. Herrick
Army Research Laboratory, Vehicle Technology Directorate
, Cleveland, OH 44135J. Turbomach. Oct 2008, 130(4): 041014 (12 pages)
Published Online: August 1, 2008
Article history
Received:
June 7, 2007
Revised:
August 20, 2007
Published:
August 1, 2008
Citation
Chen, J., Hathaway, M. D., and Herrick, G. P. (August 1, 2008). "Prestall Behavior of a Transonic Axial Compressor Stage via Time-Accurate Numerical Simulation." ASME. J. Turbomach. October 2008; 130(4): 041014. https://doi.org/10.1115/1.2812968
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