旋流角度和压降对分级燃烧室流场和雾化的影响研究  

Study on the Effect of Swirl Angle and Pressure Drop on Flow Field and Atomization in Staged Combustor

作　　者：杨晓丽 刘富强 穆勇 徐纲[1,2] YANG Xiao-li;LIU Fu-qiang;MU Yong;XU Gang(Key Laboratory of Light-duty Gas-turbine,Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing,China,100190;School of Aeronautics and Astronautics,University of Chinese Academy of Sciences,Beijing,China,101408;Qingdao Institute Aeronautical Technology,Qingdao,China,266400)

机构地区：[1]中国科学院工程热物理研究所轻型动力实验室,北京100190 [2]中国科学院大学航空宇航学院,北京101408 [3]青岛航空技术研究院,山东青岛266400

出　　处：《热能动力工程》2023年第5期126-136,共11页Journal of Engineering for Thermal Energy and Power

基　　金：国家科技重大专项(2017-Ⅲ-0002-0026,J2019-Ⅲ-0006-0049);中国科学院青年创新促进会(2019147);国家自然科学基金(52276141)。

摘　　要：为了得到不同结构参数及气动参数下的油气掺混特性,采用粒子图像测速与平面激光散射方法研究副模旋流器旋流角度、旋流器压降对中心分级燃烧室头部流场与燃油分布的影响。结果表明:在常温常压状态,随着副模旋流角度的增大,副模燃油喷雾锥角增加,台阶回流区减小,中心回流区增大,主副模射流在喷嘴下游轴向位置更近处发生融合;随着旋流器压降的增加,主副模射流增强,中心回流区最大宽度增大,副模燃油喷雾锥角微弱减小,但主模燃油的分散特性得到明显改善;副模与主模燃油在场内浓度峰值位置受耦合影响较小,主模射流轨迹附近的破碎状态在主副模燃油单开的叠加场中与耦合场中的结果差别较大。In order to obtain the oil-gas mixing characteristics under different structural and aerodynamic parameters,particle image velocimetry and planar laser scattering technique were used to study the effects of swirl angle of the secondary mode and pressure drop on the flow field and fuel oil distribution at the dome of the center staged combustor.Research results show that under normal temperature and pressure,with the increase of the swirl angle of the secondary mode,the fuel spray cone angle increases,the lip recirculation zone decreases,the primary recirculation zone increases,and the main and secondary mode jet flow mixes closer to the downstream axial position of the nozzle;with the increase of pressure drop of swirler,the jet flow of main and secondary modes is enhanced,the maximum width of primary recirculation zone increases,the flue spray cone angle of secondary mode decreases slightly,but the dispersion characteristics of main mode fuel are improved obviously;the peak concentration of the fuel in the main and secondary modes is less affected by coupling in the field,and the results of the crushing state near the jet trajectory of the main mode in the superposition field are different from those in the coupling field.

关 键 词：分级燃烧室 旋流器 流场 燃油分布 平面激光散射 

分 类 号：V231.23[航空宇航科学与技术—航空宇航推进理论与工程]