Journal of Propulsion Technology ›› 2019, Vol. 40 ›› Issue (12): 2792-2800.DOI: 10.13675/j.cnki. tjjs. 018

• Combustion and Heat Transfer • Previous Articles     Next Articles

Effects of Swirler Rotational Direction Combinations on Combustion Performance of Centrally-Staged Combustor

  

  1. College of Aero-Engine,Shenyang Aerospace University,Shenyang 110136,China
  • Published:2021-08-15

旋流器旋向组合对中心分级燃烧室性能的影响

刘威1,王成军1,于雷1,郑顺1,曾文1,陈保东1   

  1. 沈阳航空航天大学 航空发动机学院
  • 作者简介:刘 威,硕士生,研究领域为航空发动机燃烧室燃烧科学技术。E-mail:523777162@qq.com
  • 基金资助:
    国家自然科学基金 51476106 国家自然科学基金(51476106)。

Abstract: For four kinds of swirlers with different rotating directions combinations, the experimental study of the centrally-staged combustor under different inlet air parameters at atmospheric pressure was carried out, and the combustion rules under the experimental conditions was obtained. The test results show that: The rotational direction of pilot stage has obvious influence on combustion performance, and the rotational direction of primary stage has a certain effect on combustion. When the rotational direction combinations is clockwise-counterclockwise-counterclockwise, the lean blow out performance is better than others, the lean blow out fuel-air-ratio is 6.6×10-3; and the CO and UHC emission performance and combustion efficiency are better, the lowest CO emission is 98mg/m3, UHC is 650mg/m3, and the highest efficiency is 97.1%. However, when the rotational direction combinations is clockwise-counterclockwise-clockwise, its lowest out temperature distribution coefficient (OTDF) value is 0.21, and its outlet temperature characteristics are better.

Key words: Combustor;Swirler;Combustion performance;Rotational direction combinations;Pilot stage;Primary stage

摘要: 针对四种不同旋向组合的旋流器,进行了常压下中心分级燃烧室在不同进气参数条件下的试验研究,获得了在试验条件下的燃烧规律。试验结果表明:值班级旋向对燃烧性能有明显的影响,主燃级旋向对燃烧有一定作用;当旋向组合为顺-逆-逆时,燃烧室贫油熄火性能比其他方案较好,贫油熄火时油气比为6.6×10-3,同时,CO,UHC排放性能及燃烧效率较优,CO排放最低达到98mg/m3,UHC排放最低达到650mg/m3,效率最高达到97.1%;但旋向为顺-逆-顺时,其出口温度分布系数(OTDF)最低为0.21,出口温度特性较好。

关键词: 燃烧室;旋流器;燃烧性能;旋向组合;值班级;主燃级