Multimode radiation from an unflanged, semi-infinite circular duct

Journal of the Acoustical Society of America

Volumn 105, Issue 5, 1999, Pages 2590-2600

  Joseph, Phillip ^a   Morfey, Christopher L ^a  

^a UNIVERSITY OF SOUTHAMPTON   (United Kingdom)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; COMPUTER SIMULATION; MATHEMATICAL ANALYSIS; MATHEMATICAL COMPUTING; MATHEMATICAL MODEL; PRIORITY JOURNAL; SOUND INTENSITY; SOUND TRANSMISSION;

EID: 0032946390     PISSN: 00014966     EISSN: None     Source Type: Journal    
DOI: 10.1121/1.426875     Document Type: Article

References (18)

1. Details are given in Sec. III, Eqs. (21), (22), and (24).
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3. H. Levine and J. Schwinger, "On the radiation of sound from an unflanged circular pipe," Phys. Rev. 73, 383-406 (1948).
4. L. A. Weinstein, The Theory of Diffraction and the Factorization Method (Golem, Boulder, CO, 1969).
5. E. J. Rice, "Multimodal far-field acoustic radiation pattern using mode cutoff ratio," AIAA J. 16, 906-911 (1978).
6. A. Snakowska, "On the principle of equipartition of energy in the sound field inside and outside a circular duct," Acustica 79, 155-160 (1993).
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8. C. L. Morfey, "Rotating pressure patterns in ducts: their generation and transmission," J. Sound Vib. 1, 60-87 (1964).
9. nl. However, calculation of end reflection coefficients is not considered in this paper.
10. P. M. Morse and K. U. Ingard, Theoretical Acoustics, 2nd ed. (Princeton University Press, Princeton, NJ, 1986), pp. 450-453.
11. For a more detailed discussion of "duct transparency" conditions, see C. J. Chapman, J. Fluid Mech. 313, 367-380 (1996).
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14. R. M. Munt, "The interaction of sound with a subsonic jet issuing from a semi-infinite cylindrical pipe," J. Fluid Mech. 83, 609-640 (1977).
15. R-M. Munt, "Acoustic transmission properties of a jet pipe with subsonic jet flow: I, the cold jet reflection coefficient," J. Sound Vib. 142, 413-436 (1990).
16. A. M. Cargill, "Low frequency acoustic radiation from a jet pipe - a second order theory," J. Sound Vib. 83, 339-354 (1982).
17. M. C. A. M. Peters, A. Hirschberg, A. J. Reijnen, and A. P. J. Wijnands, "Damping and reflection coefficient measurements for an open pipe at low Mach and low Helmholtz numbers," J. Fluid Mech. 256, 499-534 (1993).
18. C. L. Morfey, "Sound transmission and generation in ducts with flow," J. Sound Vib. 14, 37-55 (1971).