Procedure for separating noise sources in measurements of turbofan engine core noise

Collection of Technical Papers - 12th AIAA/CEAS Aeroacoustics Conference

Volumn 4, Issue , 2006, Pages 2249-2264

  Miles, Jeffrey Hilton ^a,b  

^a NASA GLENN RESEARCH CENTER   (United States)

^b Acoustics Branch   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC WAVE PROPAGATION; COMPUTER SIMULATION; MATHEMATICAL MODELS; MICROPHONES; NATURAL FREQUENCIES; SPECTRUM ANALYSIS; TURBOFAN ENGINES;

CORE NOISE; CROSS SPECTRUM; INCOHERENT SOURCE; NOISE SOURCES;

ACOUSTIC NOISE;

EID: 33845656408     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.2006-2580     Document Type: Conference Paper

References (27)

1. Jeffrey Hilton Miles. Aligned and unaligned coherence: A new diagnostic tool. Technical Report AIAA-2006-0010, AIAA, 2006. Presented at the 44th AIAA Aerospace Science Meeting, 9-12 Jan 2006 Reno Hilton Reno, Nevada.
2. Jeffrey Hilton Miles. Validating coherence measurements using aligned and unaligned coherence functions. Technical Report AIAA-2006-1389, AIAA. 2006. Presented at the 44th AIAA Aerospace Science Meeting, 9-12 Jan 2006 Reno Hilton Reno, Nevada.
3. Jeffrey Hilton Miles. Restricted acoustic modal analysis applied to internal combustor spectra and cross-spectra measurements. Technical Report AIAA-2006-2581, AIAA, 2006. Presented at the 12th AIAA/CEAS Aeroacoustics Conference 8-10 May 2006 Hyatt Regency Cambridge Cambridge, Massachusetts.
4. Julius S. Bendat and Allan G. Piersol. Measurement and Analysis of Random Data. John Wiley &Sons, 1966.
5. Julius S. Bendat and Allan G. Piersol. Random Data: Analysis and Measurement Procedures. John Wiley &Sons, 1971.
6. Julius S. Bendat and Allan G. Piersol. Engineering Applications of Correlation and Spectral Analysis. John Wiley &Sons, 1980.
7. Allen M. Karchmer. Identification and measurement of combustion noise from a turbofan engine using correlation and coherence techniques. Technical Report NASA TM-73747, NASA, 1977. Doctor of Philosphy thesis E-9319.
8. A.M. Karchmer, M. Reshotko, and F.J. Montegani. Measurement of far field combustion noise from a turbofan engine using coherence functions. Technical Report AIAA Paper 77-1277, NASA, Oct. 1977. NASA TM-73748, N77-33163.
9. J. Y. Chung, Malcolm J. Crocker, and James F. Hamiton. Measurement of frequency response and the multiple coherence function of the noise-generation system of a diesel engine. J. Acoust. Soc. Am., 58 No. 3:636-642, September 1975.
10. J. Y. Chung. Rejection of flow noise using a coherence function method. J. Acoust. Soc. Am., 62 No. 2:388-395, August 1977.
11. Eugene A. Krejsa. New technique for the direct measurement of core noise from aircraft engines. Technical Report TM-82634, NASA, 1981.
12. Belur N. Shivashankara. High bypass ratio engine noise component separation by coherence technique. J. Aircraft, 20 No. 3:236-242, March 1983. AIAA 81-2054, Aeroacoustics Conference, 7th, Palo Alto, CA Oct. 5-7, 1981.
13. J.S. Hsu and K. K. Ahuja. A coherence-based technique to separate ejector internal mixing noise from farfield measurements. Technical Report. AIAA-98-2296, A98-30856,AIAA/CEAS Aeroacoustics Conference, 4th (19th AIAA Aeroacoustics Conference), Toulouse, France, June 2-4, 1998, Collection of Technical Papers. Pt. 2; Reston, VA AIAA 1998 p. 537-551, Georgia Tech Research Institute, Georgia Institute of Technology GTRI/AERO Atlanta, Georgia 30032-0844, 1998.
14. R. W. Stoker, K. K. Ahuja, and J. HJsu. Separation of wind-tunnel background noise and wind noise from automobile interior measurements. Technical Report AIAA-96-1763,A96-30873, Georgia Tech Research Institute, Georgia Institute of Technology GTRI/AERO Atlanta, Georgia 30032-0844, 1996. AIAA and CEAS, Aeroacoustics Conference, 2nd, State College, PA May 6-8, 1996.
15. A. Michalke, F. Arnold, and F. Holste. On the coherence of the sound field in a circular duct with uniform mean flow. Journal of Sound and Vibration, 190 No. 2:261-271, 1996.
16. Tomoyuki Minami and K. K. Ahuja. Five-microphone method for separating two different correlated noise sources from far field measurements contaminated by extraneous noise. Technical Report AIAA 2003-3261. American Institute of Aeronautics and Astronautics, 2003, 9th AIAA/CEAS Aeronautics Conference and Exibit 12-14 May 2003, Hilton Head South Carolina.
17. Richard P. Brent. Algorithms for Minimization Without Derivatives. Prentice-Hall, 1973;Dover Pulications, 2002, 1973, 2002.
18. M. J. D. Powell. An efficient method of finding the mibnimum of a function of several variables without calculating derivatives. Computer Journal, 7 No. 2:155-162, July 1964.
19. M. S. Shapiro and M. Goldstein. A collection of mathematical computer routines. Technical Report NYU-1480-14, New York University, February 1965.
20. James L. Kuester and Joe H. Mize. Optimization Techniques with Fortran. McGraw-Hill, 1973.
21. Samuel D. Stearns and Ruth A. David. Signal Processing Algorithms Using Fortran and C. PTR Prentice-Hall, Inc., 1993.
22. G. Clifford Carter. Receiver operating characteristics for a linearly thresholded coherence estimation detector. IEEE Transactions on Acoustics, Speech, and Signal Processing, ASSP-25 :90-92, February 1977.
23. G. Clifford Carter. Coherence and time dealy estimation. Proceedings of the IEEE, 75 No. 2:236-255, February 1987.
24. DM Halliday, JR Rosenberg, AM Amjad, P Breeze, BA Conway, and SF Farmer. A framework for the analysis of mixed time series/point process data-theory and application to the study of physiological tremor. Prog. Biophys Mol Biol, 64 No.:237-278, 1995.
25. David R. Brillinger. Time Series Data Analysis and Theory -Expanded Edition. Holden-Day, 1981. ISBN:0-8162-1150-7.
26. Allan Piersol. Time delay estimation using phase data. IEEE Transactions on Acoustics, Speech, and Signal Processing, ASSP-29 No. 3:471-477, June 1981.
27. Philip M. Morse and K. Uno Ingard. Theoretical Acoustics. McGraw-Hill Book Company, 1968.