分级进风燃烧室内湍流燃烧的实验研究

为有效地利用分级燃烧技术，达到高效燃烧和低NOx排放的目的，文中建立了分级进风燃烧室热态实验装置系统。利用三维激光粒子动态分析仪(PDA)，选取空心微珠(粉煤灰)作为示踪粒子，对燃烧室内湍流燃烧的气体瞬时速度场进行了实验测量。同时还测量了该燃烧室内气体平均温度和组分浓度分布。在同一工况条件下，获得了分级进风燃烧室内湍流燃烧的一组完整的实验测量数据。包括气体轴向与切向速度场、温度场、O2、CO2、CO与NO浓度场及轴向与切向脉动速度均方根值和轴向-切向脉动速度关联量分布。

Experimental Study of Turbulent Combustion in a Combustor With Staged Air Injection

For an effective utilization of the staged combustion technology and achieving high combustion efficiency and low pollutant emission, a test facility for combustor with staged air injection was set up. A three-dimension laser particle dynamic analyzer (PDA) was utilized to measure the instantaneous gas velocity of the turbulent combustion in the combustor. Porous bead (fly ash) was chosen as seed particles in the test. Measurements were also conducted for the time-averaged gas temperature and species concentrations in the combustor. A complete data set for the turbulent combustion in the combustor was obtained under the same test condition. It includes the distributions of gas axial and tangential velocity, temperature, and concentrations of O2, CO2, CO and NO, as well as the distributions of root mean square of gas axial and tangential fluctuating velocities and second-order moment of axial and tangential fluctuating velocities.