油气比及进口参数对三级旋流器燃烧室性能的影响

对三级旋流器燃烧室进行了常压试验研究.研究首先设计研制了三级旋流器燃烧室模型和试验系统,然后在此基础上开展了不同进口速度、进口温度和油气比等参数影响三级旋流器燃烧室的流阻特性、点火特性、贫油熄火特性和燃烧效率特性等性能的试验研究.结果表明:该三级旋流器燃烧室可以在不同试验工况下顺利点火和稳定工作,点火性能基本不受进口速度的影响;总压损失系数随进口速度的增加而增大,而流阻系数随速度的增加而减小,燃烧室流动未进入"自模状态";随着进口温度的增加,点火、贫油熄火性能变好,燃烧效率提高.

Effect of fuel-air ratio and inlet parameters on performance of triple swirler combustor

Experiments were conducted on a triple swirler combustor at fixed atmospheric pressure. Firstly the triple swirler combustor model and experimental system were designed, and then experiments were conducted to study the effect of inlet airflow velocity, inlet temperature and fuel-air ratio on the combustion performance, including flow drag performance, ignition performance, lean blowout performance and combustion efficiency performance. Results show that: the triple swirler combustor can be ignited successfully and operated stably at all experimental cases, and inlet airflow velocity has little effect on the ignition performance; the total pressure loss coefficient increases with inlet airflow velocity increasing while the flow drag coefficient decreases non-linearly with the increasing of inlet airflow velocity,and the inlet airflow has not been at the full development state; as inlet airflow temperature increases, the ignition performance and lean blowout performance become better and the combustion efficiency improves.