摘要
针对某型头部带涡流片结构的辅助动力装置回流燃烧室,开展了不同涡流片出口偏转角度、不同头部开孔方案以及不同涡流片排布方式下对燃烧室内冷态流场包括头部周向整流的数值计算研究。计算结果表明:燃烧室内主燃区为单个大涡结构,中间区和掺混区分别形成了双涡结构。随着涡流片出口偏转角度增大,头部周向流动速度增大,周向流动不均匀程度也增高;头部大孔方案下燃烧室内气流周向速度分布比小孔方案下更加均匀;涡流片混合排布方式下比涡流片整段均匀布置方式下的周向速度在回流区中心明显增大,但周向速度分布则更加不均匀。
A numerical study was conducted on the cold flow field,including circumferential flow rectification at the head,within a reverse flow combustion chamber of an auxiliary power unit featuring a vortex plate structure.The findings revealed that the primary combustion zone within the combustor consists of a single large vortex structure,with the middle and mixing zones each developing into a dual vortex configuration under various conditions of vortex plate outlet deflection angles,head opening designs,and vortex plate arrangements.With increasing deflection angles at the vortex plate outlet,the circumferential flow velocity at the head increases,also leading to heightened non-uniformity in the flow;The circumferential velocity distribution within the combustion chamber is more uniform under the large hole head design than under the small hole design;In the mixed vortex plate arrangement,the circumferential velocity at the center of the recirculation zone significantly increases compared to a uniform arrangement of vortex plates across the entire section,albeit with a less uniform distribution of circumferential velocity.
作者
谌红星
曾传伟
雷熠
邬国凡
金义
魏浩
Chen Hong-xing;Zeng Chuan-wei;Lei Yi;Wu Guo-fan;Jin Yi;Wei Hao(AECC Hunan Aviation Powerplant Research Institute,Hunan Zhuzhou 412002;College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Jiangsu Nanjing 210016)
出处
《内燃机与配件》
2025年第16期13-17,共5页
Internal Combustion Engine & Parts
关键词
回流燃烧室
涡流片
火焰筒头部
辅助动力装置
数值模拟
冷态流场
Reverse flow combustor
Vortex plate
Flame tube dome
Auxiliary power unit
Numerical simulation
Cold flow field
