| 发动机尾气射流特性研究 |
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| 引用本文： | 董越波,耿端阳.发动机尾气射流特性研究[J].拖拉机与农用运输车,2011,38(2):72-75. |
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| 作者姓名： | 董越波 耿端阳 |
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| 作者单位： | 山东理工大学农业工程与食品科学学院,山东淄博,255049 |
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| 摘 要： | 利用高速摄影仪实时拍摄发动机尾气的射流运动过程,通过Im age-Pro6.3专业图像处理软件,选择气体射流顶点为研究对象,根据自由射流理论,得到发动机尾气贯穿距离、射流锥角、射流速度随射流时间变化的规律。结果表明:尾气射流分为两个阶段,射流起始段和射流主体段。当发动机转速一定时,在整个射流过程中,射流贯穿距离随射流时间的增加而增加,射流锥角基本保持不变,射流速度随射流时间的增加而减小;当发动机转速提高时,射流贯穿距离、射流速度均有所减小,而射流锥角增大。在此基础上,确定了射流贯穿距离与射流速度之间的数学模型。
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| 关 键 词： | 发动机 尾气射流 贯穿距离 射流锥角 射流速度 |
Study on Characteristics of Gas Jet for Engine |
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| DoNG Yue-bo,GENG Duan-yang.Study on Characteristics of Gas Jet for Engine[J].Tractor & Farm Transporter,2011,38(2):72-75. |
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| Authors: | DoNG Yue-bo GENG Duan-yang |
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| Institution: | DONG Yue-bo,GENG Duan-yang(School of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255049,China) |
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| Abstract: | The movement of the gas jet is shot in real-time by the high speed photography,and the images are disposed with the Image-Pro6.3,which is professional software.The author selected the vertex of the gas jet as a subject,investigated to research the variation of the jet penetration,the jet dispersion angle and the jet velocity,along with the jet time according to the theory of the free jet.The results show that:the gas jet development process is divided into two stages,and they are the initial jet and the mai... |
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| Keywords: | Engine Gas jet Jet penetration Jet dispersion angle Jet velocity |
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