双级旋流器偏心对出口流场影响

胡建; 郑婷婷; 胡好生

doi:10.13224/j.cnki.jasp.2020.07.012

双级旋流器偏心对出口流场影响

doi: 10.13224/j.cnki.jasp.2020.07.012

基金项目: 航空基金（2014ZB08004）；湖南省科技计划项目（2018JJ3576）

计量
- 文章访问数: 341
- HTML浏览量: 8
- PDF量: 632
- 被引次数: 0
出版历程
- 收稿日期: 2019-12-25
- 刊出日期: 2020-07-28

Double-swirler misalignment effect on outlet flow field

1.
Hunan Aviation Powerplant Research Institute,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China
2.
Hunan South General Aviation Engine Limited Liability Company,Aero Engine Corporation of China,Zhuzhou Hunan 412002,China

摘要

摘要: 采用试验研究方法,以同一旋流器搭配不同尺寸出口限制域为对象,研究了双级旋流器偏心后,出口流场的变化规律。研究表明:当限制域边界尺寸(L)与旋流器特征尺寸(D)比值小于某个特定值时(L/D=33),旋流器出口射流与壁面存在附着点,出口流场由收缩型变为扩张型;对收缩型流场,旋流器偏心对出口流场影响较大,尤其是径向速度场分布,由无偏心时的负值(小于-4 m/s)增大至正值(大于1 m/s);对扩张型出口流场,旋流器偏心几乎不影响出口轴向、径向速度的分布及大小,如中心线的轴线速度最小值均在-44 m/s附近,径向速度最小值均-1 m/s;进行旋流器设计时,通过减小出口限制域与旋流器特征尺寸比值的方式,使出口流场呈扩张型,可有效抑制旋流器偏心对出口流场的影响。
- 双级旋流器 /
- 限制域 /
- 扩张型流场 /
- 收缩型流场 /
- 粒子图像测速仪
Abstract: The influence of hydrocyclone eccentricity on the outlet flow field was studied by experimental method when the same hydrocyclone was matched with different sizes of outlet limiting region. The results showed that when the ratio of the boundary size (L) to the characteristic size (D) of the hydrocyclone was less than a certain value (L/D=33), there was an attachment point between the jet at the outlet of the hydrocyclone and the wall of the hydrocyclone. The outlet flow field changed from contraction type to expansion type; for the contractile flow field, the eccentricity of the hydrocyclone had a great influence on the outlet flow field, especially the radial velocity field, the minimum value changed from -4 m/s to 1 m/s; while for the expanding outlet flow field, the eccentricity of the hydrocyclone had little effect, for example, the minimum axial velocity was around -44 m/s, and the minimum radial velocity was -1 m/s. In order to reduce the influence of hydrocyclone eccentricity, the outlet flow field can be expanded by increasing the combined swirl number and reducing the ratio of the outlet limiting region to the characteristic dimension of the hydrocyclone.
- double-swirler /
- limiting region /
- expansion field /
- contraction field /
- ,particle image velocimetry

HTML

参考文献(18)

[1]	HSIAO G,MONGIA H.Swirl cup modeling:Part Ⅲ grid independent solution with different turbulence models［R］.AIAA 2003-1349,2003.
[2]	ATESHKADI A,MCDONELL V G,SAMUELSEN G S.Effect of hardware geometry on gas and drop behavior in a radial mixer spray［J］.Symposium (International) on Combustion，1998，27（2）：1985-1992.
[3]	HSIAO G,MONGIA H.Swirl cup modeling:Part Ⅱ inlet boundary conditions［J］.AIAA 2003-1350,2003.
[4]	FU Y,CAI J,JENG S M,et al.Confinement effects on the swirling flow of a counter-rotating swirl cup［R］.ASME Paper 2005-GT-68622,2005.
[5]	REDDY A P,SUJITH R I,CHAKRAVARTHY S R.Swirler flow field characteristic in a sudden expansion combustor geometry［J］.Journal of Propulsion and Power,2006,22(4):800-808.
[6]	FU Yongqiang,CAI Jun,JENG S M.Characteristics of the swirling folw generated by a counter-rotating swirler［R］.AIAA-2007-5690,2007.
[7]	CAI Jun,FU Yongqiang,FLOHRE N M,et al.Experimental study on coherent structures of a counter-rotating multi-swirler cup［R］.AIAA 2007-5674,2007.
[8]	JENG S M,FLOHRE N M,MONGIA H C.Air temperature effects on non-reacting spray characteristics issued from a counter-rotating swirler［R］.AIAA 2005-355,2005.
[9]	党新宪,赵坚行,张欣,等.应用PIV技术测试模型环形燃烧室流场［J］.航空动力学报,2009,24(7):1470-1475. DANG Xinxian,ZHAO Jianxing,ZHANG Xin,et al.Measurements of the flow fields in a model annular combustor using particle image velocimetry［J］.Journal of Aerospace Power,2009,24(7):1470-1475.(in Chinese)
[10]	林宇震,许全宏,刘高恩.燃气轮机燃烧室［M］.北京:国防工业出版社,2008.
[11]	彭云晖,林宇震,许全宏,等.双旋流空气雾化喷嘴喷雾、流动和燃烧性能［J］.航空学报,2008,29(1):6-19. PENG Yunhui,LIN Yuzhen,XU Quanhong et al.Atomization,aerodynamics and combustion performance of swirl cup［J］.Acta Aeronautica et Astronautica Sinica,2008,29(1):6-19.(in Chinese)
[12]	林宇震,刘高恩,王华芳.反向与同向双旋流器流场的试验研究［J］.航空动力学报,1995,10(4):423-425. LIN Yuzhen,LIU Gaoen,WANG Huafang.Experimental in vestigation of the flow field for co and counter swirler［J］.Journal of Aerospace Power,1995,10(4):423-425.(in Chinese)
[13]	ROSFJORD T J,RUSSELL S.Nozzle design and manufacturing influences on fuel spray circumferential uniformity［J］.Journal of Propulsion and Power,1989,5(2):144-150.
[14]	ROSFJORD T J,ECKERLE W A.Aerating fuel nozzle design influence on airflow features［J］.Journal of Propulsion and Power,1991,7(6):849-856.
[15]	COHEN J M,ROSFJORD T J.Influences on the sprays formed by high-shear fuel nozzle/swirler assemblies［R］.Journal of Propulsion and Power,1993,9(1):16-27.
[16]	MCDONELL V G,ARELLANO L,LEE S W,et al.Effect of hardware alignment on fuel distribution and combustion performance for a production engine fuel-injection assembly［J］.Symposium (International) on Combustion,1996,26(2):2725-2732.
[17]	胡好生,蒋尧,卢克乾,等.偏心对双级旋流器出口流场影响试验［J］.航空动力学报,2015,30(5):1025-1031. HU Haosheng,JIANG Yao,LU Keqian,et al.Experiment on effect of misalignment on outlet flow field of double-swirler［J］.Journal of Aerospace Power,2015,30(5):1025-1031.(in Chinese)
[18]	蒋尧,胡建,胡好生.偏心对双级旋流器出口流场影响数值模拟［J］.航空动力学报,2015,30(12):2919-2924. JIANG Yao,HU Jian,HU Haosheng.Numerical simulation on the effect of misalignment on outlet flow field of double-swirler［J］.Journal of Aerospace Power,2015,30(12):2919-2924.(in Chinese)