| Citation: | XU Li, LIU Kai, ZENG Wen. Effect of swirl number on lean premixed combustion characteristics[J]. Journal of Aerospace Power, 2023, 38（6）：1292-1298 doi: 10.13224/j.cnki.jasp.20210675
|
The effects of swirl numbers on the combustion performance of lean premixed combustor were studied by means of numerical simulation and experiment. The numerical simulation results showed that when the swirl number was between 0.56−0.73, an obvious recirculation zone can be generated at the head of the flame barrel. With the increase of swirl number, the scale of recirculation zone increased, but the fuel mixing uniformity became worse, and the non-uniformity of the main combustion zone decreased from 0.00853 to 0.01047, which was not conducive to the improvement of the uniformity of temperature field and the reduction of NOx emission. The experiment results showed that with the increase of swirl number, the lean blowout fuel-air ratio decreased, the smaller inlet Mach number indicated the more obvious trend, the outlet temperature distribution factor increased from 0.1640 to 0.1915, the uniformity became worse, the emission index of CO decreased from 26.23 g/kg to 18.07 g/kg, the emission index of UHC decreased from 12.55 g/kg to 9.21 g/kg, and the emission index of NOx increased from 0.609 g/kg to 0.850 g/kg.
| [1] |
邹博文, 许全宏, 曹文宇, 等. 中心分级燃烧室耦合回流区贫油熄火机理[J]. 航空动力学报, 2013, 28(8): 1759-1763.
ZOU Bowen, XU Quanhong, CAO Wenyu, et al. Lean blowout mechanism of coupled recirculation zone in concentric staged combustor[J]. Journal of Aerospace Power, 2013, 28(8): 1759-1763. (in Chinese)
|
| [2] |
赵坚行. 民用发动机污染排放及低污染燃烧技术发展趋势[J]. 航空动力学报,2008,23(6): 986-996. doi: 10.13224/j.cnki.jasp.2008.06.006
ZHAO Jiangxing. Pollutant emission and development of low-emission combustion technology for civil aero engine[J]. Journal of Aerospace Power,2008,23(6): 986-996. (in Chinese) doi: 10.13224/j.cnki.jasp.2008.06.006
|
| [3] |
YI T, GUTMARK E. Lean blowout features and control in a swirl-stabilized, partially premixed gas turbine combustor[R]. Reno, US: 44th AIAA Aerospace Sciences Meeting and Exhibit, 2006.
|
| [4] |
EGGLESS R L G, BROWN C T. Comparison of numerical and experimental results of a premixed DLE gas turbine combustor[R]. ASME 2001-GT-65, 2001.
|
| [5] |
MICHAEL F, DOUG T, RICHARD S, et al. Development of the GE aviation low emissions TAPS combustor for next generation aircraft engines[R]. Nashvill, US: 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2012.
|
| [6] |
FOUST M, THOMSEN D, STICKLES R, et al. Development of the GE aviation low emissions TAPS combustor for next generation aircraft engines[R]. Orlando, US: AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition, 2012.
|
| [7] |
LAZIK W, DOERR T, BAKE S, et al. Development of lean-burn low-NOx combustion technology at Rolls-Royce Deutschland[R]. ASME 2008-GT-51115, 2008.
|
| [8] |
张宝诚. 航空发动机试验和测试技术[M]. 北京: 北京航空航天大学出版社, 2005: 324-336.
|
| [9] |
刘静,肇俊武. 国外民用航空发动机低污染燃烧室的发展[J]. 航空发动机,2012,38(4): 11-16. doi: 10.3969/j.issn.1672-3147.2012.04.004
LIU Jing,ZHAO Junwu. Development of low emission combustor for foreign civil aeroengine[J]. Aeroengine,2012,38(4): 11-16. (in Chinese) doi: 10.3969/j.issn.1672-3147.2012.04.004
|
| [10] |
金如山. 航空燃气轮机燃烧室[M]. 北京: 宇航出版社, 1988: 128-132.
|
| [11] |
DINESH K K J R,JENKINS K W,SAVILL A M,et al. Swirl effects on external intermittency in turbulent jets[J]. International Journal of Heat and Fluid Flow,2012,33(1): 193-206. doi: 10.1016/j.ijheatfluidflow.2011.10.007
|
| [12] |
JOSHI N D, EPSTEIN M J, DURLAK S, et al. Development of a fuel-air premixer for aero-derivative dry low emission combustors[R]. ASME 94-GT-253, 1994.
|
| [13] |
YELLUGARI K, GOMEZ R V, GUTMARK E. Effects of swirl number and central rod on flow in lean premixed swirl combustor[R]. Orlando, US: AIAA Scitech 2020 Forum, 2020.
|
| [14] |
MYERS G, CARDENAS M, REYNOLDS B, et al. The effect of primary zone design on the performance of a high heat release rate propulsion engine combustor[R]. Houston, US: International Gas Turbine and Aeroengine Congress and Exposition Houston, 1995.
|
| [15] |
REDDY K S, REDDY D N. Experimental and numerical investigations of swirling flows in a reverse flow gas turbine combustor[R]. AIAA 2007-4219, 2007.
|
| [16] |
党新宪,赵坚行,徐榕,等. 试验研究旋流数对燃烧室气动性能的影响[J]. 航空动力学报,2011,26(1): 112-122. doi: 10.13224/j.cnki.jasp.2011.01.005
DANG Xinxian,ZHAO Jianxing,XU Rong,et al. Experimental studied the effect of swirl number on the aerodynamic performance of combustor[J]. Journal of Aerospace Power,2011,26(1): 112-122. (in Chinese) doi: 10.13224/j.cnki.jasp.2011.01.005
|
| [17] |
周力行,陈兴隆,张建. 旋流数对湍流燃烧中NO生成影响的研究[J]. 工程热物理学报,2002,23(5): 637-640. doi: 10.3321/j.issn:0253-231X.2002.05.032
ZHOU Lixing,CHEN Xinglong,ZHANG Jian. Studies on the effect of swirl on NO formation in turbulent combustion[J]. Journal of Engineering Thermophysics,2002,23(5): 637-640. (in Chinese) doi: 10.3321/j.issn:0253-231X.2002.05.032
|
| [18] |
代威,林宇震,张弛. 第2级径向旋流器旋流数对燃烧室点火和贫油熄火性能的影响[J]. 航空动力学报,2015,30(5): 1092-1099. doi: 10.13224/j.cnki.jasp.2015.05.009
DAI Wei,LIN Zhenyu,ZHANG Chi. Effects of swirl number of second stage radial swirler on combustor ignition and lean blow-out performance[J]. Journal of Aerospace Power,2015,30(5): 1092-1099. (in Chinese) doi: 10.13224/j.cnki.jasp.2015.05.009
|
| [19] |
孙宝成. 燃气轮机燃料/空气掺混规律的数值研究[D]. 北京: 清华大学, 2007.
SUN Baocheng. Numerical study of fuel/air unmixedness in a nonreacting gas turbine combustor[D]. Beijing: Tsinghua University, 2007. (in Chinese)
|
DownLoad:
