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化学工业与工程
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��ѧ��ҵ�빤�� 2003, Vol. 20 Issue (2) :100-103    DOI:
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The Middle Insensitive Phenomenon of Ejector While Two Throats Matching
LIU Xue-wu��1, JIN Liang-an��2, LI Zhi-yi��1��(1�� School of chemical Engineering,Dalian University of Technology, Dalian 116012, China;��2.Dalian Naval Academy Liaoning,Dalian 116018,China)����
(1�� School of chemical Engineering,Dalian University of Technology, Dalian 116012, China;��2.Dalian Naval Academy Liaoning,Dalian 116018,China)��

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Abstract�� In this paper has been discovered middle insensitive area of ejector in the matching between throat of the gradually expanding tube and that of nozzle. The middle insensitive area was brought by the various peculiarity of the flow field. The appearance time was decided by the throat of nozzle, the pressure at in and out area,and the difference of the pressure of them;The criterion of the appearance time was brought out through numerical method to dispose experiment data. When the throat of the gradually expanding tube in round ��D������=1��55��d+k��P������cm��/��P����p��(ln����P��-2.3) the middle insensitive area will appear.����
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Received 2003-03-15; published 2003-03-15
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��ѧ��,������,��־��.������������ƥ��ʱ���м�ٶ�����[J].  ��ѧ��ҵ�빤��, 2003,20(2): 100-103
LIU Xue-wu��1, JIN Liang-an��2, LI Zhi-yi��1��.The Middle Insensitive Phenomenon of Ejector While Two Throats Matching[J].  Chemcial Industry and Engineering, 2003,20(2): 100-103
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