Study On The Vortex Structure Of Coupling Combustion Stabilizer With Square Cylinder-Strong Swirl Flow

摘要：

　　Strong swirl and a blunt body are two commonly used structure to form low velocity recirculation zone to stabilize combusting of high-speed gas.Compared with the vortex shedding mechanism of the square cylinder blunt,the computational results show that the vortex shedding mechanism of the coupling combustion stabilizer is controlled by the vortex of the swirling flow instead of the cylindrical vortex.Also,the flow around bluff body with swirling flow through the central opening can reduce drag,increase the length of the recirculation zone and reflux mass,and increase the number of vortexes so as to enhance the heat and mass transfer.Thus,coupling combustion stabilizer can enhance the stability of flame.

关键词： Swirl flow Bluff body Vortex shedding Vortex structure

作者: Gan Dong Zhiqiang Li Zhihong Zhang

作者单位: National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics,School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing,100083,P. R. China

会议类型: 国际会议

会议名称: 2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)

会议地点: 上海

会议语种:英文

页码: 1-5

在线出版日期: 2014-09-24（万方平台首次上网日期，不代表论文的发表时间）