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�������պ����ѧѧ�� 2011, Vol. 37 Issue (11) :1456-1460    DOI:
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�������պ����ѧ ���շ��������������ص�ʵ����, ���� 100191
Effects of airflow split and primary holes arrangement on lean blowout limits of combustor with dual-axial swirlers
Xie Fa, Huang Yong, Miao Hui, Chen Haigang*
National Key Laboratory on Aero-Engines, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� An experimental research was conducted for the effect of the variations of dome air entry areas and the arrangement of primary holes on the lean blowout (LBO) limits of a single dome rectangular model combustor with dual-axial swirl cups. The experimental results show that the variations of air entry areas into the swirlers will have great effect on the LBO performance of the combustors. Increasing the air entry area into the primary swirler by 20% will improve the combustor lean blowout limits about 11.8%, and increasing the air entry area into secondary swirler by 20% will improve the combustor lean blowout limits about 16.6%. On the contrary, the decrease of the air entry areas of the swirlers will deteriorate the LBO performance. Besides, the arrangement of primary holes has little effect on the combustor LBO limits.
Keywords�� combustor   dual-axial swirlers   lean blowout experiment   airflow split     
Received 2010-07-08;
About author: л ��(1981-),��,ɽ�������, ��ʿ��,xiefa@sjp.buaa.edu.cn.
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л��, ����, ���, �º���.���������˫����������ȼ����ƶϨ����Ӱ��[J]  �������պ����ѧѧ��, 2011,V37(11): 1456-1460
Xie Fa, Huang Yong, Miao Hui, Chen Haigang.Effects of airflow split and primary holes arrangement on lean blowout limits of combustor with dual-axial swirlers[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(11): 1456-1460
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