Investigation of Stator Wake Variability in Single Stage Axial-Compressor
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Abstract
In this paper, we investigate the stator wake variability along the axial direction under different rotating speeds and mass flow conditions, in the terms of wake-core position, wake depth, wake width and wake velocity gradient. Experimental study is carried out in a single stage axial compressor by using Hot-wire Anemometer (HWA). Simultaneously, the numerical calculation is brought out in the same experiment rig. Firstly, we analyze the time-averaged velocity and radial vorticity at different axial positions, and explore the wake variability along the axial direction. Then, we present the effects of operation conditions on the wake-core position, and find out the inlet Mach number and incident angle are both the key influence factors of the wake-core position. Finally, we summarize four preliminary conclusions of the wake variability.
- D. Gurak, Mehmet S. Kavsaoglu and I. S. Akmandor, “Multi Block Unsteady Navier Stokes Solution of Com-pressor Stator in Rotor Wake,” 43rd American Institute of Aeronautics and Astronautics (AIAA) aerospace sciences meeting and exhibit, Reno, Nevada, 10-13 January 2005， p. 1011.
- Albert J. Sanders and Fleeter Sanford, “Rotor Blade-to- Blade Wake Variability and Effect on Downstream Vane Response,” Journal of propulsion and power, 2002, Vol. 18, No.2, pp. 456-464.
- G. M. Mcnerney, C. P. Van Dam and D. T. Yen Nakafuji, “Blade-Wake Interaction Noise for Turbines with DownWind Rotors,” Journal of solar energy engineering, Vol. 125, No. 4, 2003, pp. 497-505.
- M. Roger, “Analytical Modelling of Wake-Interaction Noise in Centrifugal Compressors with Vaned Diffusers,” 10th AIAA/CEAS Aeroacoustics Conference, Manchester, 10-12 May 2004, p. 2994.
- A. Ferrecchia, W. N. Dawes and P. C. Dhanasekaran, “Compressor Rotor Wakes and Tone Noise Study,” 9th AIAA/CEAS Aeroacoustics Conference and Exhibit, Hilton Head, South Carolina, 12-14 May 2003, p. 3328.
- Shaobin Li, Fu Chen and Peigang Yan, “Numerical In-vestigation of the Effect of Stator Clocking on Blade Boundary Layer Flow in Compressor,” Acta Aeronautica Et Astronautica Sinica, Vol. 28, No. z1, 2007, pp. s62-69.
- J. Estevadeordal, S. Gogineni and L. Goss, “DPIV Study of Wake-rotor Synchronization in a Transonic Compres-sor,” 31st AIAA Fluid Dynamics Conference and Exhibit, Anaheim, CA, 11-14 June 2001, p. 3095.
- Bo Liu, Zhipeng Cao and Yuanhu Cai, “Numerical Si-mulation of Unsteady Vortex in the Wake of Cascade Flow,” Journal of Northwestern Polytechnical University, Vol. 23, No. 5, 2005, pp. 562-566.
- Guanghua Wang, Baojie Liu and Tao Liu, “A PIV Study of Near Wake Flow of airfoil Part I-Kinematic Characte-ristics,” Journal of Aerospace Power, Vol. 14, No. 2, 1999, pp. 119- 124.
- Nicole L. Key, Patrick B. Lawless and Sanford Fleeter, “Rotor Wake Variability in a Multistage Compressor,” 45th AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, 8-11 January 2007, p. 19.
- S. T. Hsu and A. M. Wo, “Near-Wake Measurement in a Rotor/Stator Axial Compressor Using Slanted Hot-Wire Technique,” Experiments in Fluids, Vol. 23, No. 5, 1997, pp. 441-444.
- A. Jameson, W. Schmit and E. Turkel, “Numerical Solu-tion of the Euler Equations by Finite Volume Methods Using Runge-Kutta Time-Stepping Schemes,” 14th AIAA Fluid and Plasma Dynamics Conference, Palo Alto, CA, 23-25 June 1981, p. 1259.