气体火焰驻波在低频段熄火的研究

Stalling of gas flame standing wave in low frequency

用驻波函数和伯努利方程推导出火焰驻波管内任意位置的声压方程,并分析了低频时熄火的原因.引入压节(波幅)、压腹(波节)解释了驻波管两端出现高火焰的原因.用全封闭的驻波管完整地呈现了低频段共振点的驻波.

T he acoustic pressure equation at any position in the flame standing w ave tube w as de‐rived with the standing wave function and the Bernoulli equation ,and the reason of the stalling of the flame in low frequency was analyzed .The pressure section (loop) and pressure abdomen (nodes) were introduced to explain the phenomenon of high flame at both ends of the tube .Using totally enclosed standing wave tube the standing wave at resonance point of low frequencies was demonstrated .