凹腔双驻涡稳焰冷态流场初步研究

推进技术 ›› 2008, Vol. 29 ›› Issue (2): 135-138.

凹腔双驻涡稳焰冷态流场初步研究

邢菲,孟祥泰,李继保,樊未军

北京航空航天大学能源与动力工程学院北京100083;北京航空航天大学能源与动力工程学院北京100083;沈阳发动机设计研究所;北京航空航天大学能源与动力工程学院辽宁沈阳110015;北京航空航天大学能源与动力工程学院北京100083

发布日期:2021-08-15

Elementary study on cool flow field of double vortex in cavity for flame stabilization

Coll.of Energy and Power Engineering,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;Coll.of Energy and Power Engineering,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China;Shenyang Aeroengine Research Inst.,Shenyang 110015,China);Coll.of Energy and Power Engineering,Beijing Univ.of Aeronautics and Astronautics,Beijing 100083,China

Published:2021-08-15

摘要/Abstract

摘要： 驻涡燃烧室凹腔内流场对其燃烧性能有重要的影响,为了找出凹腔流场的特性,使用数值和实验两种手段对凹腔内双驻涡稳焰冷态流场进行了初步研究。研究结果表明:在主流速度和凹腔前壁面吹气速度一定的情况下存在一个最佳的后壁面吹气速度使得凹腔内的流场稳定,以满足先进燃烧室所期望的条件。研究成果初步确定了凹腔双驻涡稳焰冷态流场特征,并为开展热态研究打下基础。

关键词: 驻涡;凹腔;流动分布;数值仿真

Abstract: The flow pattern inside the cavity is a critical aspect of TVC performance.To improve the retention of unmixed fuel in the cavity,a double-vortex is studied for the cavity with PIV measurements and CFD.The results show that there is an optimal value for the afterwall-air speed with fixed speed of main air and forewall-air to intensify stability of the double trapped-vortex.

Key words: Trapped vortex;Cavity;Flow distribution;Numerical simulation

邢菲,孟祥泰,李继保,樊未军. 凹腔双驻涡稳焰冷态流场初步研究[J]. 推进技术, 2008, 29(2): 135-138.