论文部分内容阅读
利用气流通过弯管产生的离心效应来模拟高速旋转的工况,研究高位后台阶火焰稳定器的关键几何参数对液雾燃烧贫油熄火特性的影响.通过控制后台阶高度,台阶板长度,后台阶到上壁面的距离三个几何参数,考察它们对后台阶火焰稳定器贫油熄火特性的影响.试验得到的结果表明在离心条件下,后台阶高度和台阶板长度对贫油熄火特性的影响较大,随着后台阶高度和台阶板长度的增加,贫油熄火极限降低,范围拓宽;而后台阶到上壁面的距离对贫油熄火特性影响很小;对于同一个后台阶而言,随着离心力的增加,后台阶火焰稳定器的贫油熄火极限也降低,熄火范围拓宽.
The effect of the key geometric parameters of the upper rear step flame stabilizer on the characteristics of lean blowout by liquid mist was studied by using the centrifugal effect generated by the air flow through the elbow to simulate the high speed rotation.After controlling the height of the back step, the length of the step plate, Step to the upper wall distance of three geometric parameters to examine their impact on the back-stage flame stabilizer lean blowout characteristics of the test results show that under centrifugal conditions, the back-stage height and the length of the plate on the characteristics of the flameout of lean Is larger, with the increase of the height of the back step and the length of the step plate, the lean limit of the lean oil is reduced and the range is broadened; while the distance from the back step to the upper wall surface has little effect on the flameout characteristics of the lean oil; for the same back step, Centrifugal force increases, the back flame stabilizer lean oil flameout limit is also reduced, widening the flameout.