This paper reports ENEA's experience in developing an active control system to increase flame blow-out limits in an axisymmetric premixed bluff-body burner. The reactive mixture is composed of CH4 and air, and it burns at atmospheric pressure. The control strategy consists in pulsating coaxial air jets exhausted from a ring surrounding the burner exit section. It has been observed that this configuration increases flame anchoring and reduces noise. The control variable is the flame chemiluminescence sampled by means of photodiode looking at the anchoring recirculation zone. Spectral analysis of chemiluminescence reveals information related to turbulence and chemical kinetics dynamics, thus becoming an important instrument to capture precursor events of flame instabilities. Copyright © 2005 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.
|Publication status||Published - 2005|
|Event||41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit - , United States|
Duration: 1 Jan 2005 → …
|Conference||41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit|
|Period||1/1/05 → …|
All Science Journal Classification (ASJC) codes
- Aerospace Engineering
- Control and Systems Engineering
- Electrical and Electronic Engineering
Bruschi, R., Giacomazzi, E., Giammartini, S., Giulietti, E., Manfredi, F., Stringola, C., & Daniele, S. (2005). Optical unsteady characterization of turbulent combustion: application in an active control system. Paper presented at 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit, United States.