TY  - CPAPER
AU  - Haghiri, A
AU  - TALEI, M
AU  - Brear, MJ
AU  - Hawkes, ER
Y2  - 2021/01/11
Y1  - 2015
UR  - http://hdl.handle.net/11343/258643
AB  - Direct numerical simulation (DNS) is used to study sound generation by open, turbulent premixed flames. Two cases of methane/air combustion with different equivalence ratios (φ = 0.7 and 1 ) are considered. The computational grid is set up such that both the near and far fields are fully resolved. A simple-chemistry model is used to reduce the computational cost. The results show that flame annihilation events are significant monopolar sources of noise. Spectral analysis of the radiated sound shows a broadband spectrum where the observed frequency of the peak amplitude matches that observed experimentally. Furthermore, it is observed that the stoichiometric flame (φ =1) is a much stronger source of noise than the lean flame (φ = 0.7 ).
PB  - The Combustion Institute Australia & New Zealand Section
T1  - The effect of equivalence ratio on sound generation by turbulent
premixed flames
IS  - Proceedings of the Australian Combustion Symposium
SP  - 320-323
L1  - /bitstream/handle/11343/258643/Haghiri_etal_2015.pdf?sequence=2&isAllowed=y
ER  -