Optimization of circumferentially non-uniform acoustic liners in annular ducts

Collection of Technical Papers - 10th AIAA/CEAS Aeroacoustics Conference

Volumn 3, Issue , 2004, Pages 2663-2671

  Campos, L M B C ^a,b   Oliveira, T M G S ^a,b  

^a INSTITUTO SUPERIOR TÉCNICO   (Portugal)

^b Department of Mechanical Engineering ^*  (Portugal)

Author keywords

[No Author keywords available]

Indexed keywords

ACOUSTIC IMPEDANCE; ATTENUATION; BESSEL FUNCTIONS; BOUNDARY CONDITIONS; DUCTS; JET ENGINES; OPTIMIZATION; WAVE EQUATIONS;

ACOUSTIC LINERS; ANNULAR DUCTS; NONUNIFORM LINERS; PARTICLE WAVE MODE;

ACOUSTICS;

EID: 19944385612     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: 10.2514/6.2004-3034     Document Type: Conference Paper

References (7)

1. Watson, W. R., "An acoustic evaluation of ciroumferentially segmented duct liners." AIAA Journal. Vol. 22, No. 9, pp. 1229-1233, 1984.
2. Fuller, C. R., "Propagation and radiation of sound from flanged circular ducts with circumferentially varying wall admittances, I: semi-infinite ducts.", Journal of Sound and Vibration, Vol. 93, No. 3, pp. 321-340, 1984.
3. Fuller, C. R., "Propagation and radiation of sound from flanged circular ducts with circumferentially varying wall admittances, I: finite ducts with sources.", Journal of Sound and Vibration, Vol. 93, No. 3, pp. 341-351, 1984.
4. q(iqθ).", Journal of Sound and Vibration. Vol. 100, No. 4, pp. 463-475, 1985.
5. rd ICAS Congress, 2002
6. Campos, L. M. B. C. and Oliveira, J. M. G. S., "On the optimization of non-uniform acoustic liners on annular nozzles.", Journal of Sound and Vibration (to be published).
7. Watson, G. N., Bessel Functions, Cambridge University Press, 1944.