尾缘吹气稳定器缝宽对燃烧性能影响的试验

杨阳; 马文杰; 樊未军; 岳明; 杨茂林

尾缘吹气稳定器缝宽对燃烧性能影响的试验

北京航空航天大学能源与动力工程学院, 北京 100083

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出版历程
- 收稿日期: 2007-04-30
- 修回日期: 2008-03-20
- 刊出日期: 2008-05-28

Experimental on the effects of jet exit width on EBMC flameholders' combustion performance

School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 为了探讨尾缘射流出口缝宽对燃烧性能的影响,在来流λ_m-0.1,0.18,0.25和丁T_m-53,63,3 K状态条件下,分别对缝宽为1,2,4 mm的尾缘吹气式稳定器和V型稳定器的燃烧性能进行了试验研究,对比分析了它们的贫熄特性、温度分布和燃烧效率.燃烧试验结果表明缝宽对尾缘吹气式稳定器燃烧性能有明显影响.在本模拟条件下,缝宽较窄的稳定器贫熄边界较宽,缝宽为1 mm的尾缘吹气式稳定器贫熄边界最宽;从出口温度分布可以看出,缝宽小的尾缘吹气式稳定器高温区域较大;缝宽较小的稳定器燃烧效率较高,缝宽1 mm的稳定器燃烧效率最高.
- 航空、航天推进系统 /
- 火焰稳定器 /
- 气动稳定 /
- 加力燃烧
Abstract: To study the effects of jet exit width on the combustion performance,the combustion performance of edge blowing mixture curtain flameholders(EBMC) and a V gutter with 1mm,2mm or 4mm jet exit width was investigated experimentally under λ_m =0.1,0.18,0.25 and T_m=573 K,673 K,773 K condition,and the lean limit of the flame stabilization,temperature distribution and combustion efficiency of flameholders were compared and analyzed.The results of combustion experiments show that jet exit width affect EBMC flameholders combustion performance evidently.Under the simulation condition,the lean limit of the flame stabilization is wider when jet exit width is narrower,so lean limit of the flame stabilization of 1mm jet exit width EBMC is widest.The temperature distribution of flameholders shows that high temperature area of narrow jet exit EBMC flameholders is bigger.And combustion efficiency is higher when flameholders jet exit width is narrower,so combustion efficiency of 1mm jet exit width EBMC is highest.
- aerospace propulsion system /
- flame holder /
- aerodynamic stabilization /
- afterburning

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参考文献(9)

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