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Research Papers

Passive Noise Reduction for a Contrarotating Fan

[+] Author and Article Information
Chen Wang

Laboratory of Aerodynamics and Acoustics,
HKU Zhejiang Institute of
Research and Innovation and
Department of Mechanical Engineering,
The University of Hong Kong,
Pokfulam, Hong Kong
e-mail: chadwong@hku.hk

Lixi Huang

Laboratory of Aerodynamics and Acoustics,
HKU Zhejiang Institute of
Research and Innovation and
Department of Mechanical Engineering,
The University of Hong Kong,
Pokfulam, Hong Kong
e-mail: lixi@hku.hk

1Corresponding author.

Contributed by the International Gas Turbine Institute (IGTI) of ASME for publication in the JOURNAL OF TURBOMACHINERY. Manuscript received July 30, 2014; final manuscript received August 6, 2014; published online September 30, 2014. Editor: Ronald Bunker.

J. Turbomach 137(3), 031007 (Sep 30, 2014) (10 pages) Paper No: TURBO-14-1189; doi: 10.1115/1.4028357 History: Received July 30, 2014; Revised August 06, 2014

There has been renewed interest in the contrarotating (CR) fan configuration in aviation and other applications where size and weight are important design factors. Contra-rotation recovers swirl energy compared with the single-rotor design, but this advantage is not fully harnessed due to, perhaps, the issue of noise. This study explores passive noise reduction for a small, axial-flow, CR fan with perforated trailing-edge for the upstream rotor and perforated leading-edge for the downstream rotor. The fan is designed with simple velocity triangle analyses, which are checked by 3D flow computations. The aerodynamic consequence and the acoustic benefit of such perforated blading are investigated experimentally. The results show that there is a reduction of total pressure compared with the baseline CR fan at the same rotating speeds, but this is easily compensated for by slightly raising the rotating speeds. A reduction of 6–7 dB in overall noise is achieved for the same aerodynamic output, although there is a moderate noise increase in the high frequency range of 12.5–15.0 kHz due to blade perforations. The effect of inter-rotor separation distance is also investigated for the baseline design. A clear critical distance exists below which the increased spacing shows clear acoustic benefits.

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References

Schimming, P., 2003, “Counter Rotating Fans—An Aircraft Propulsion for the Future?” J. Therm. Sci., 12(2), pp. 97–103. [CrossRef]
Alexiou, A., Roumeliotis, I., Aretakis, N., Tsalavoutas, A., and Mathioudakis, K., 2012, “Modeling Contra-Rotating Turbomachinery Components for Engine Performance Simulations—The Geared Turbofan With Contra-Rotating Core Case,” ASME J. Eng. Gas Turbines Power, 134(11), p. 111701. [CrossRef]
Playle, S. C., Korkan, K. D., and Von Lavante, E., 1986, “A Numerical Method for the Design and Analysis of Counter-Rotating Propeller,” J. Propul. Power, 2(1), pp. 57–63. [CrossRef]
Mitchell, G. A., and Mikkelson, D. C., 1982, “Summary and Recent Results From the NASA Advanced High-Speed Propeller Research Program,” NASA Lewis Research Center, Cleveland, OH, Technical Memorandum No. 82891.
Strack, W. C., Knip, G., Weisbrich, A. L., Godston, J., and Bradley, E., 1982, “Technology and Benefits of Aircraft Counter Rotation Propellers,” NASA Lewis Research Center, Cleveland, OH, Technical Memorandum No. 82983.
Bradley, A. J., 1986, “A Study of the Rotor/Rotor Interaction Tones From a Contra-Rotating Propeller Driven Aircraft,” Rolls-Royce plc, Westminster, UK.
Young, R. H., 1951, “Contra-Rotating Axial-Flow Fans,” J. Inst. Heat. Vent. Eng., 18(187), pp. 448–477.
Sharma, P. B., and Adekoya, A., 1996, “A Review of Recent Research on Contra-Rotating Axial Flow Compressor Stage,” International Gas Turbine and Aeroengine Congress and Exposition, Birmingham, UK, June 10–13, ASME Paper No. 96-GT-254.
Roy, B., Ravibabu, K., Rao, S., Basu, S., Raju, A., and Murphy, P. N., 1992, “Flow Studies in Ducted Twin-Rotor Contra-Rotating Axial Flow Fans,” International Gas Turbine and Aeroengine Congress and Exposition, Cologne, Germany, June 1–4, ASME Paper No. 92-GT-390.
Kerrebrock, J. L., Epstein, A. H., Merchant, A. A., Guenette, G. R., Parker, D., Onnee, J. F., Neumayer, F., Adamczyk, J. J., and Shabbir, A., 2006, “Design and Test of an Aspirated Counter-Rotating Fan,” ASME Paper No. GT2006-90582. [CrossRef]
Saunders, N. T., and Glassman, A. J., 1985, “Future Directions in Aero-Propulsion Technology,” 7th International Symposium on Air Breathing Engines, Beijing, Sept. 2–6, ISABE Paper No. 85-7000.
Shigemitsu, T., Fukutomi, J., and Okabe, Y., 2010, “Performance and Flow Condition of Small-Sized Axial Fan and Adoption of Contra-Rotating Rotors,” J. Therm. Sci., 19(1), pp. 1–6. [CrossRef]
Shigemitsu, T., Fukutomi, J., Okabe, Y., and Iuchi, K., 2010, “Performance and Flow Conditions of Contra-Rotating Small-Sized Axial Fan,” ASME Paper No. FEDSM-ICNMM2010-30418. [CrossRef]
Shigemitsu, T., Fukutomi, J., Okabe, Y., and Iuchi, K., 2010, “Performance and Flow Condition of Contra-Rotating Small-Sized Axial Fan at Partial Flow Rate,” Int. J. Fluid Mach. Syst., 3(4), pp. 271–278. [CrossRef]
Shigemitsu, T., Fukutomi, J., Okabe, Y., Iuchi, K., and Shimizu, H., 2011, “Unsteady Flow Condition of Contra-Rotating Small-Sized Axial Fan,” J. Therm. Sci., 20(6), pp. 495–502. [CrossRef]
Nouri, H., Ravelet, F., Bakir, F., and Sarraf, C., 2011, “Experimental Investigation on Ducted Counter-Rotating Axial Flow Fans,” ASME Paper No. AJK2011-22061. [CrossRef]
Nouri, H., Ravelet, F., Bakir, F., Sarraf, C., and Rey, R., 2012, “Design and Experimental Validation of a Ducted Counter-Rotating Axial-Flow Fans System,” ASME J. Fluids Eng., 134(10), p. 104504. [CrossRef]
Chen, Y., Liu, B., Xuan, Y., and Xiang, X., 2008, “A Study of Speed Ratio Affecting the Performance of a Contra-Rotating Axial Compressor,” Proc. Inst. Mech. Eng., Part G, 222(7), pp. 985–991. [CrossRef]
Wintucky, W. T., and Stewart, W. L., 1958, “Analysis of Two-Stage Counter-Rotating Turbine Efficiencies in Terms of Work and Speed Requirements,” National Advisory Committee for Aeronautics, Washington, DC, NACA RM Paper No. E57L05.
Louis, J. F., 1985, “Axial Flow Counter-Rotating Turbines,” 30th International Gas Turbine Conference and Exhibit, Houston, TX, Mar. 18–21, ASME Paper No. 85-GT-218.
Lengani, D., Santner, C., Spataro, R., and Gottlich, E., 2012, “Analysis Tools for the Unsteady Interactions in a Counter-Rotating Two-Spool Turbine Rig,” J. Exp. Therm. Fluid Sci., 42, pp. 248–257. [CrossRef]
Zhou, Y., Liu, H., Li, W., and Zeng, J., 2011, “Aerodynamics Design of Two-Stage Vaneless Counter-Rotating Turbines,” J. Therm. Sci., 20(5), pp. 406–412. [CrossRef]
Appa, K., and Forest, K., 2001, “Contra-Rotating Wind Turbine System,” U.S. Patent No. 6,278,197.
Lowson, M. V., 1965, “The Sound Field for Singularities in Motion,” Proc. R. Soc. Lond., Ser. A, 286(1407), pp. 559–572. [CrossRef]
Huang, L., 2003, “Characterizing Computer Cooling Fan Noise,” J. Acoust. Soc. Am., 114(6), pp. 3189–3199. [CrossRef] [PubMed]
Blake, W. K., 1986, Mechanics of Flow-Induced Sound and Vibration, Academic Press, Orlando, FL.
Lowson, M. V., 1970, “Theoretical Analysis of Compressor Noise,” J. Acoust. Soc. Am., 47(1B), pp. 371–385. [CrossRef]
Cooper, A. J., and Peake, N., 2005, “Upstream-Radiated Rotor–Stator Interaction Noise in Mean Swirling Flow,” J. Fluid Mech., 523, pp. 219–250. [CrossRef]
Parry, A. B., 1988, “Theoretical Prediction of Counter-Rotating Propeller Noise,” Ph.D. thesis, Department of Applied Mathematical Studies, University of Leeds, Leeds, UK.
Shin, H. W., Whitfield, C. E., and Wisler, D. C., 1994, “Rotor–Rotor Interaction for Counter-Rotating Fans, Part 1: Three-Dimensional Flowfield Measurements,” AIAA J., 32(11), pp. 2224–2233. [CrossRef]
Polacsek, C., and Barrier, R., 2007, “Aeroacoustic Computations of a Counter-Rotating Fan,” 14th International Congress on Sound and Vibration, Cairns, Australia, July 9–12, Paper No. TP 2007-144.
Lewy, S., 2010, “Semi-Empirical Prediction of Tone Noise Due to Counter-Rotating Open Rotors,” 20th International Congress on Acoustics (ICA 2010), Sydney, Australia, Aug. 23–27.
Envia, E., 2010, “NASA Open Rotor Noise Research,” 14th CEAS-ASC Workshop & 5th Scientific Workshop of X3-Noise Aeroacoustics of High-Speed Aircraft Propellers and Open Rotors, Institute of Aviation, Warsaw, Poland, Oct. 7–8, Paper No. 2010NASA E-17589.
Envia, E., 2012, “Open Rotor Aeroacoustic Modelling,” Conference on Modeling Fluid Flow (CMFF’12), Budapest, Hungary, Sept. 4–8, Paper No. NASA TM-2012-217740.
Peake, N., and Parry, A. B., 2012, “Modern Challenges Facing Turbomachinery Aeroacoustics,” Annu. Rev. Fluid Mech., 44, pp. 227–248. [CrossRef]
Crigler, J. L., and Copeland, W. L., 1965, “Noise Studies of Inlet-Guide-Vane—Rotor Interaction of a Single-Stage Axial-Flow Compressor,” Langley Research Center, Hampton, VA, NASA Technical Note No. NASA TN D-2962.
Dittmar, J. H., 1992, “A Concept for a Counterrotating Fan With Reduced Tone Noise,” NASA Lewis Research Center, Cleveland, OH, Technical Memorandum No. NASA-TM-105736.
Guillot, S., Stitzel, S., and Burdisso, R., 2002, “Fan Flow Control for Improved Efficiency and Noise Reduction,” Fan Phase II Proposal, NASA STTR 2001-II Solicitation, Proposal No. 010066.
Carter, C. J., 2001, “Aerodynamic Performance of a Flow Controlled Compressor Stator Using an Imbedded Ejector Pump,” Master's thesis, Mechanical Engineering Department, Virginia Polytechnic Institute and State University, Blacksburg, VA.
Naumann, R. G., and Corcoran, T. E., 1992, “Control of the Wake From a Simulated Blade by Trailing Edge Blowing,” Master's thesis, Lehigh University, Bethlehem, PA.
Leitch, T. A., Saunders, C. A., and Ng, W. F., 2000, “Reduction of Unsteady Stator–Rotor Interaction Using Trailing Edge Blowing,” J. Sound Vib., 235(2), pp. 235–245. [CrossRef]
Bae, Y., and Moon, Y. J., 2011, “Effect of Passive Porous Surface on the Trailing-Edge Noise,” Phys. Fluids, 23(12), p. 126101. [CrossRef]
Talbotec, J., and Vernet, M., 2010, “Snecma Counter Rotating Fan Aerodynamic Design Logic & Tests Results,” 27th International Congress of Aeronautical Sciences, Nice, France, Sept. 19–24, Paper No. ICAS 2010-4.1.2.
ANSI/AMCA, 1999, “Laboratory Method of Testing Fans for Aerodynamic Performance Rating,” Air Movement and Control Association International, Inc. and American Society of Heating, Refrigerating and Air Conditioning Engineers, Inc., Arlington Heights, IL, ANSI/SME Standard 210.
Tinetti, A. F., Kelly, J. J., Thomas, R. H., and Bauer, S. X. S., 2002, “Reduction of Wake–Stator Interaction Noise Using Passive Porosity,” AIAA Paper No. 2002-1036. [CrossRef]

Figures

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Fig. 1

CAD pictures of front (left) and rear (right) rotors

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Fig. 2

(a) Computational domain and (b) mesh details in the front rotor domain

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Fig. 3

Relative velocity vectors on blade surfaces

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Fig. 5

The characteristic curves of experiment and computation

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Fig. 6

General picture of rotor–rotor interaction

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Fig. 7

CAD pictures of perforated front rotor (top left), perforated rear rotor (top right), and a close-up of the perforated front rotor (bottom)

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Fig. 8

Contours of relative velocity magnitude (m/s) for axial positions of (a) Z = 2 mm, (b) Z = 4 mm, (c) Z = 9 mm, and (d) Z = 14 mm, Z = 0 being the trailing edge of the front rotor

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Fig. 9

Contours of relative velocity magnitude (m/s) for r = 40 mm, with mixing plane at 16 mm from the trailing edge of the front rotor

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Fig. 10

Variation of SPL with axial spacing

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Fig. 11

Spectra comparison of the side noise

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Fig. 12

Characteristic curves of baseline and perforated blades

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Fig. 13

Comparison of SPL directivity for baseline and perforated blades

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Fig. 14

Spectral comparison of baseline and perforated blades at 330 deg

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Fig. 15

SPL distribution in different frequency range

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