适于旋流杯下游流场的改进型半分析关系式

黄勇; 郭志辉

适于旋流杯下游流场的改进型半分析关系式

黄勇,
郭志辉

北京航空航天大学能源与动力工程学院, 北京 100083

详细信息

中图分类号: V 232.4
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出版历程
- 收稿日期: 2005-06-15
- 网络出版日期: 2006-06-30

Improved semi-analytical correlation approach for the flowfield downstream of swirl cups

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

摘要

摘要: 利用典型(CFM-56燃烧室)旋流杯结构下游的流场实验数据,参照经验关系式,提出了物理意义更明确、拟合更准确、且更便于对大量实验数据进行相关性研究的半经验关系式,并与旋流杯下游紧靠出口处附近的轴向速度及旋流速度测量数据进行了对比,发现各特征数据(如峰值位置、峰值衰减速度、回流区宽度及其沿下游的发展、回流速度及其衰减等)与实验数据非常相符,从而初步验证了提出的半经验关系式.同时,给出了公式中不同的经验常数取值带来的变化,分析了与几何及工况参数之间可能的联系,为进一步验证该关系式打下基础.分析表明,各经验常数的变化之间相互独立,且物理意义明确,可以方便地用于进一步验证.
- 燃烧室 /
- 旋流 /
- 速度 /
- 关系式方法
Abstract: An improved semi-analytical correlation was proposed for the prediction of the flowfields downstream a typical swirl cup on the basis of previous correlations proposed by Rizk & Mongia. The improved correlation has clear physical definition and is adequate for its constants determination by large amount of experimental data. The comparison between the selected experimental data and the predictions by the correlation is quite well, especially about the characteristic data such as the peak velocity, the radial location of the peak velocity, the decay of the velocity, the size of the recirculation zone, and the development of the recirculation zone. Meanwhile, the influences of the constants in the correlation are shown quantitatively, and the possible reason has been analyzed briefly. The analysis showed that all the empirical constants were independent with each other, thus the semi-analytical correlation could be used easily as further validation for different data.
- combustors /
- swirling flow /
- velocity /
- correlation methods

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参考文献(1)

[1] Wang H Y, McDonell V G, Sowa W A, et al. Characterization of a two-phase flow field downstream of a 3x-scale gas turbine coaxial, counter-swirling, combustor dome swirl cup . AIAA-92-0229, 1992 [2] Ateshkadi A, McDonell V G, Samuelsen G S. Effect of mixer geometry on fuel spray distribution, emission and stability . AIAA-98-0247, 1998 [3] Mongia H C, AI-Roub M, Danis A, et al. Swirl cup modeling:part 1 . AIAA 2001-3576, 2001 [4] Im K S, Lai M C, Tacina R. A parametric spray study of the swirler/venturi injectors . AIAA-98-3269, 1998 [5] Park J H, Yoon Y, Jeung I S, et al. Effect of swirl cup on characteristics of fuel spray in gas turbine combustors . AIAA 2000-3352, 2000 [6] Feng Shouyi, Huang Yong, Guo Zhihui. Experiments on the spray in a model combustor with swirl cup and primary hole flows Proc of 9th Annual Conference on Liquid Atomization and Spray System(ILASS-ASIA 2004). Shanghai:, 2004:217-224 [7] 郎洪俭,黄勇,郭志辉.双轴向旋流杯燃烧室主燃区流场特性中国动力工程学会第三届青年科技工作者会议.南京:,2005 Lang Hongjian, Huang Yong, Guo Zhihui. The flowfield in the primary region after a double axial swirl cup Proc of 3^rd Yang Scholar Conference on Power Engineering. Nanjing:, 2005(in Chinese) [8] Mongia H C, Gore J P, Grinstein F F, et al. Combustion research needs for helping development of next generation advanced combustors . AIAA 2001-3853, 2001 [9] Rizk N K, Mongia H C. Semi-analytical fuel injector performance correlation approach . AIAA-89-2902, 1989 [10] Rizk N K, Mongia H C. A semi-analytical aapproach validation for airblast atomizer . AIAA-90-0316, 1990 [11] Rizk N K, Mongia H C. Further validation of a semi-analytical approach for fuel injectors of different concepts . AIAA-90-2190, 1990 [12] Mongia H C, Vermeersch M, Held T J. A DRA modeling approach for correlating gaseous emissions of turbo-propulsion engine combustors . AIAA 2001-3419, 2001 [13] Mongia H C, Vermeersch M, Thomsen D, et al. A simple reactor-based approach for correlating lean blowout of turbopropulsion engine combustors . AIAA 2001-3420, 2001

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