SOME RESULTS IN COMBUSTION GENERATED NOISE

This paper contains some analytical results aimed toward understanding of prior experimental results in noise generated by the turbulent combustion process. It is proven that regardless of the turbulence structure the far field sound pressure is directly proportional to the first Eulerian time derivative of the chemical reaction rate integrated over the reacting volume. The characteristics of the correlation function for this reaction rate time derivative are investigated through elementary reasoning for several simple premixed turbulent flame models. Scaling rules for the sound power output are obtained and compared with experiment. The directional characteristics of the radiated sound are investigated. It is shown that preferred directionality due to the source behavior is minor and that observed directionality must be explained by other phenomena such as refraction at temperature discontinuities.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/0022460X
• Corporate Authors:

  Academic Press Incorporated

  Berkeley Square House, Berkeley Square
  London W1,   England 
• Authors:
  • Strahle, W C
• Publication Date: 1972-7-8

Media Info

• Pagination: p. 113-125
• Serial:
  • Journal of Sound and Vibration
  • Volume: 23N1
  • Publisher: Elsevier
  • ISSN: 0022-460X
  • EISSN: 1095-8568
  • Serial URL: http://www.sciencedirect.com/science/journal/0022460X

Subject/Index Terms

• TRT Terms: Engine rooms; Noise; Sound transmission; Turbulence
• Old TRIS Terms: Engine room noise; Sound radiation
• Subject Areas: Design; Environment; Marine Transportation;

Filing Info

• Accession Number: 00035231
• Record Type: Publication
• Source Agency: United States Merchant Marine Academy
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM