TY - GEN
T1 - Influence of the combustion mode on acoustic spectra of open turbulent swirl flames
AU - Wäsle, Johann
AU - Winkler, Anton
AU - Sattelmayer, Thomas
PY - 2005
Y1 - 2005
N2 - An experimental investigation of freely propagating swirl stabilized flames is presented here. Acoustic measurements with an intensity probe show the global relations between the combustion process and the resulting noise. Both, the total acoustic power and the spectral character were evaluated. It is found that combustion noise in general is broad band in a frequency range of 100 to 500 Hz with no dominant frequency for burners in the 100 kW class. An exponential decay of the acoustic intensity above a certain peak frequency with an exponent of-8/3 has been found.
AB - An experimental investigation of freely propagating swirl stabilized flames is presented here. Acoustic measurements with an intensity probe show the global relations between the combustion process and the resulting noise. Both, the total acoustic power and the spectral character were evaluated. It is found that combustion noise in general is broad band in a frequency range of 100 to 500 Hz with no dominant frequency for burners in the 100 kW class. An exponential decay of the acoustic intensity above a certain peak frequency with an exponent of-8/3 has been found.
UR - http://www.scopus.com/inward/record.url?scp=84881572830&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84881572830
SN - 9781627481496
T3 - 12th International Congress on Sound and Vibration 2005, ICSV 2005
SP - 1713
EP - 1720
BT - 12th International Congress on Sound and Vibration 2005, ICSV 2005
T2 - 12th International Congress on Sound and Vibration 2005, ICSV 2005
Y2 - 11 July 2005 through 14 July 2005
ER -