【摘要】 对影响无阀自激脉动燃烧器频率特性的因素(管段长度、收缩比、热源位置和温度分布)进行分析研究。结果表明,燃烧器进气段的长度调节对频率的影响大于出气段长度调节的影响;出、进气段截面积与燃烧室截面积的收缩比越大,频率下降越大;在燃烧器总长不变的情况下,燃烧室长度的调节对频率的影响不是单一的。更多还原

【Abstract】 The Parameters effecting on freqnency response of valveless self-pulsating combustor, (such as pipe length,cross-section ratio of combustion chamber/inlet and/or outlet section, location of heat source and temperature distribution) arestudied. Results show that the adjustment in length of combustor’s inlet section effects upon frequency of combustor more effi-cient than outlet section. The cross-section ratio of combustion chamber/inlet and/or outlet section is larger, the frequency ofpulsating combustor is lower and that with the total length of combustor constant the effect of adjustment of chamber’s length isnot monotonous for frequency.更多还原