Validation of an impedance eduction method in flow

4th AIAA/CEAS Aeroacoustics Conference

Volumn , Issue , 1998, Pages 418-428

  Watson, Willie R ^a   Jones, Michael G ^a   Parrott, Tony L ^a  

^a NASA LANGLEY RESEARCH CENTER   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

AEROACOUSTICS; AERODYNAMICS; ALGORITHMS; MACH NUMBER; OPTIMIZATION;

DAVIDON-FLETCHER-POWELL; GRAZING INCIDENCE; IMPEDANCE EDUCTION; IMPEDANCE FUNCTIONS; IMPEDANCE SPECTRUM; OBJECTIVE FUNCTIONS; PIECEWISE-CONTINUOUS; UNDETERMINED COEFFICIENTS;

ACOUSTIC IMPEDANCE;

EID: 78149440051     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.1998-2279     Document Type: Conference Paper

References (11)

1. Armstrong, D. L., Beckemeyer, R. J., and Olsen, R. F., “Impedance Measurements of Acoustic Duct Liners With Grazing Flow,” Paper presented at the 87th Meeting of the Acoustical Society of America, New York, NY, 1974.
2. Watson, W. R., “A Method for Determining Acoustic-Liner Admittance in a Rectangular Duct With Grazing Flow From Experimental Data,” NASA TP-2310, 1984.
3. Watson, W. R., “A New Method for Determining Acoustic-Liner Admittance in Ducts With Sheared Flow in Two Cross-Sectional Directions,” NASA TP-2518, 1985.
4. Watson, W. R., Tanner, Sharon E., and Parrott, T. L., “ A Finite Element Model for Extracting Normal Incidence Impedance in Nonprogressive Acoustic Wave Fields,” Journal of Computational Physics, vol. 125, pp. 177-186, 1996.
5. Watson, W. R., Tanner, S. E., and Parrott, T. L., “Validation of a Numerical Method for Extracting Liner Impedance.” AIAA Journal, Vol. 34, No. 3, 1996, pp. 548-554.
6. Watson, W. R., Tanner, S. E., and Parrott, T. L., “Optimization Method for Educing Variable-Impedance Liner Properties,” AIAA Journal, Vol. 36, No. 1, 1998, pp. 18-23.
7. Kraft, R. E., “Theory and Measurements of Acoustic Wave Propagation In Multi-Segmented Rectangular Ducts,” Ph. D. Thesis, University of Cincinnati, 1976.
8. Myers, M. K.,”On the Acoustic Boundary Condition in the Presence Of Flow,” Journal Of Sound And Vibration, Vol. 71, No. 3, 1980, pp. 429-434.
9. Chandrakant S. and Abel, J. F., “Introduction to the Finite Element Method,” Van Nostrand Reinhold Company, New York, N. Y. 1972.
10. Jones, M. G., and Parrott, T. L., “Evaluation of a Multi-point Method for Determining Acoustic Impedance,” Mechanical Systems and Signal Processing, Vol 3, No. 1, 1989, pp. 15-35.
11. Stewart, G. W., III “A Modification of Davidon’s Minimization Method to Accept Difference Approximations of Derivatives,” Journal of ACM, vol. 14, No. 1, 1967, pp 72-83.