三级轴向旋流器影响燃烧室性能的试验

对装有4种不同三级轴向旋流器的燃烧室开展了常压下不同进口速度、进口温度和油气比状态下的燃烧室性能试验研究,获得了不同三级轴向旋流器燃烧室的流阻性能和燃烧性能.研究结果表明:各方案中三级轴向旋流器燃烧室的总压损失系数均随着进口速度的增大(由40m/s增加到70m/s)而增加;进口温度的升高对点火和熄火均有利;旋向组合为顺时针—逆时针—顺时针的三级轴向旋流器燃烧室性能与旋向组合为逆时针—逆时针—顺时针的三级轴向旋流器燃烧室燃烧性能相比,总压损失系数稍大、贫油熄火性能较优、燃烧效率稍低;内旋流器空气流量的减少可使得三级轴向旋流器燃烧室的总压损失系数增大、贫油熄火油气比和燃烧效率均有所降低. 

Experiment on effect of triple axial swirler on combustor performance

Experiments were conducted to study four different triple axial swirlers combustor about flow drag performance and combustion performance of a triple axial swirler combustor at different inlet airflow velocities, inlet airflow temperatures and fuel-air ratios with fixed atmospheric pressure. The test results show that: the total pressure loss coefficient of triple axial swirler combustor increases with inlet airflow velocity increasing (from 40m/s to 70m/s), and inlet airflow temperature rise is helpful to ignition and lean blowout; by comparing the combustion performance of the triple axial swirler combustor of "clockwise—counterclockwise—clockwise"rotational direction combinations with the combustor of "counterclockwise—counterclockwise—clockwise" rotational direction combination, the total pressure loss coefficient is a little higher and the lean blowout performance is better, while the combustion efficiency is a little lower; decreasing the inner swirler airflow rate would lead to increase of total pressure loss coefficient, and decline of lean blowout fuel-air ratio and combustion efficiency.