Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 1998.04a
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- Pages.678-683
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- 1998
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- 1598-2548(pISSN)
Active Control Method of Heat-Duct Coupled Noise in a Cylindrical Combustor
원통형 연소기에서의 열-덕트 연성 소음의 능동 제어 연구
Abstract
Combustion instability by thermoacoustic feedback incite strong low frequency noise and vibration which damage the system and provoke the environmental problems. Therefore, it is necessary to control the thermoacoustic oscillation. In the way of controlling the instability, active control method using adaptive algorithm is applied. In this study, active noise control method using anti-sound technique is selected, whose principle is cancelling the noise with the addition of opposite phase sound. At first, simulation is performed to confirm the stability of controller, and after that control of combustion instability is carried out to get cancellation of 20-30dB SPL.
Keywords