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�������պ����ѧѧ�� 2011, Vol. 37 Issue (4) :483-486    DOI:
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��ϣ��, ������̫, ��Ҿ�, ��ǿ*
�������պ����ѧ ��Դ�붯������ѧԺ, ���� 100191
Effect of micro-jets mixing enhancement on infrared radiation of plume
Zhu Xijuan, Eriqitai Li, Jiajun Wangqiang*
School of Jet Propulsion, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ ������΢����ǿ�����������3~5�yμm���εĺ����������,������΢����ǿ����ϵ���������������Խ����˱Ƚ�,������΢����ǿ����϶���������������Ե�Ӱ��.�������������¶ȳ��������������������N-S���̵õ�,����Tam-Thies����ģ��ģ������.����������Եļ����������������������-�����Խ��������µ���ά���䴫�䷽�̵õ�.����������,���е�������������,΢�������Դﵽ�Ϻõ�ǿ�����Ч��,��������ռ��������1%ʱ,�����ĺ������ǿ�ȱȻ�׼�����ĺ������ǿ�Ƚ���15%����,���������ﵽ����������3%ʱ,�����ĺ������ǿ�ȿ��Խ���27%����.
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Abstract�� The infrared radiation in 3~5�yμm band of the unforced plume and the forced plume which is mixed by injecting micro-jets into subsonic shear layer were calculated by a three-dimensional infrared(IR) radiation code of the plume, it was developed by the finite volume method (FVM) in non-gray absorbing-emitting media. The 3-D flow field of the jet was simulated numerically by FVM, Tam-Thies turbulence model. The results show that small injection flow rates (less than 3%) can make sharp increases in both velocity and temperature decay rates at middle Mach number. Compared with the unforced plume, when the jet mass flow accounts for 1% of the main flow, the IR radiation intensity of the forced plume is reduced by about 15%; and when the jet mass flow occupy 3%,the IR radiation intensity of the forced plume is decreased by about 27%.
Keywords�� micro-jets   mixing enhancement   infrared radiation   finite volume method     
Received 2010-06-22;
About author: ��ϣ��(1981-),Ů,ɽ���ij���,��ʿ��,zxj811129@163.com.
��ϣ��, ������̫, ��Ҿ�, ��ǿ.΢����ǿ����϶���������������Ե�Ӱ��[J]  �������պ����ѧѧ��, 2011,V37(4): 483-486
Zhu Xijuan, Eriqitai Li, Jiajun Wangqiang.Effect of micro-jets mixing enhancement on infrared radiation of plume[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2011,V37(4): 483-486
http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2011/V37/I4/483