TY - JOUR
T1 - An experimental study of partially premixed flame sound
AU - Singh, Kapil K.
AU - Zhang, Cheng
AU - Gore, Jay P.
AU - Mongeau, Luc
AU - Frankel, Steven H.
N1 - Funding Information:
We gratefully acknowledge the State of Indiana for supporting the work through 21st Century Indiana Research & Technology fund and Dr. Gabriel Roy, Office of Naval Research (ONR), for supporting the present work through Grant No. N00014-02-1-0769.
PY - 2005
Y1 - 2005
N2 - The sound generation by partially premixed flames was studied. Starting from a non-premixed flame, air was gradually added to achieve partial premixing while maintaining the fuel flow rate constant. Methane, ethylene, and ethane partially premixed flames were studied with hydrogen added for flame stabilization. The sound pressure generated by methane partially premixed flames scaled with M5 compared to M3 for turbulent non-premixed methane flames. The sound pressure generated by partially premixed flames of ethane and ethylene scales as M∼4.5. With progressive partial premixing, spectra level increased at all frequencies with a greater increase in the high-frequency region compared to the low-frequency region. The partially premixed flames of methane, ethylene, and ethane generated a similar SPL as a function of equivalence ratio when the fuel volume flow rate was matched. However, when fuel mass flow rate was matched, the ethane and ethylene flames produced a similar SPL, which was lower than that produced by the methane flame. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).
AB - The sound generation by partially premixed flames was studied. Starting from a non-premixed flame, air was gradually added to achieve partial premixing while maintaining the fuel flow rate constant. Methane, ethylene, and ethane partially premixed flames were studied with hydrogen added for flame stabilization. The sound pressure generated by methane partially premixed flames scaled with M5 compared to M3 for turbulent non-premixed methane flames. The sound pressure generated by partially premixed flames of ethane and ethylene scales as M∼4.5. With progressive partial premixing, spectra level increased at all frequencies with a greater increase in the high-frequency region compared to the low-frequency region. The partially premixed flames of methane, ethylene, and ethane generated a similar SPL as a function of equivalence ratio when the fuel volume flow rate was matched. However, when fuel mass flow rate was matched, the ethane and ethylene flames produced a similar SPL, which was lower than that produced by the methane flame. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).
KW - Acoustics
KW - Combustion noise
KW - Flame sound
KW - Partially premixed
KW - Turbulent flames
UR - http://www.scopus.com/inward/record.url?scp=33750370749&partnerID=8YFLogxK
U2 - 10.1016/j.proci.2004.08.205
DO - 10.1016/j.proci.2004.08.205
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AN - SCOPUS:33750370749
SN - 1540-7489
VL - 30 II
SP - 1707
EP - 1716
JO - Proceedings of the Combustion Institute
JF - Proceedings of the Combustion Institute
T2 - 30th International Symposium on Combustion
Y2 - 25 July 2004 through 30 July 2004
ER -