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�������պ����ѧѧ�� 2006, Vol. 32 Issue (06) :630-634    DOI:
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Improved semi-analytical correlation approach for the flowfield downstream of swirl cups
Huang Yong, Guo Zhihui*
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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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.
Keywords�� combustors   swirling flow   velocity   correlation methods     
Received 2005-06-15;
About author: �� ��(1964-),��,���������,����, yhuang@buaa.edu.cn.
����, ��־��.�������������������ĸĽ��Ͱ������ϵʽ[J]  �������պ����ѧѧ��, 2006,V32(06): 630-634
Huang Yong, Guo Zhihui.Improved semi-analytical correlation approach for the flowfield downstream of swirl cups[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2006,V32(06): 630-634
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2006/V32/I06/630
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