Combustion instability may lead high-frequency oscillation and detonation initiation as a consequence. Challenges are made for detailed understandings of the phoenomena.
1. Rocket combustor oscillation analysis
Non-linear pressure wave arises with the occurrence of local ignition
Tanabe et al. TRANS JSASS, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30 p. Pa_1-Pa_6
2. Acoustically forced triple flame and its proper orthogonal mode analysis
A triple flame on a multi-slot burner with acoustic systems
POM analysis on the triple flame clarified the co-existence of two distinctive oscillation modes
- translational mode frequency coincides with the acoustic frequency
- frequency doubling is seen for the vibrational mode
Sugiu et al. TRANS JSASS, AEROSPACE TECHNOLOGY JAPAN, Vol. 14 (2016) No. ists30 p. Pa_7-Pa_12
3. Baroclinic torque induced flame wrinkling
A spark-ignited flame propagates spherically in still mixture
- standing acoustic field yielded flame wrinkling
Kusakawa et. al. ASPACC 2010, Hirosawa et. al., AIAA paper 2012-341