An experimental investigation of the characteristic of non-premixed lifted flames with high-frequency has been performed. Before the fuel was supplied to nozzle, the fuel was supplied through a speaker which was located under the nozzle. The fuel pass...
An experimental investigation of the characteristic of non-premixed lifted flames with high-frequency has been performed. Before the fuel was supplied to nozzle, the fuel was supplied through a speaker which was located under the nozzle. The fuel passed through the excitation speaker under the influence of the high-frequency affects the lifted flame characteristics. The measurements were performed in flow range that occurs lifted flame and blow out. When the high-frequency is generated from speaker, the lifted length became shorter, and noise reduced comparing to unexcitation case. Additionally, operating flow range was increased and diameter of flame base became smaller with high-frequency effect. Through this experiments, its ascertained that the high-frequency excitation can be adopted with effective method for flame stability and noise reduction.