スピーカー型シンセティックジェットによる浮き上がり火炎の能動制御(機械力学,計測,自動制御)

概要

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Lifted flame would be helped high-intensity combustion system like gas turbine for NO_x reduction and improve the limit of flame's blowing off. While lifted flame has various instabilities, flame control technology is necessary for fame stabilizing. In this paper, a speaker-driven synthetic jet actuator for lifted flame control is proposed, and the active control of the height of lifted flame is performed using this actuator. This type of actuator has the advantage of fitting to existing combustion systems and produces high speed jet. Th performance of the speaker-driven synthetic jet actuator is examined by experiments that reduce the height of lifted flame of a propane diffusion flame. In the active control of the height of lifted flame, the Delayed Feedback Control method considering delay time for a control law is applied. The frequency of synthetic jet is fixed and velocity of jet is changed by the control law. The results show that the synthetic jet can lower the instabilities of lifted flame.
社団法人日本機械学会の論文
2006-03-25