| 有初始横流的冲击壁面强化的换热特性实验研究 |
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| 引用本文： | 张大林,常海萍,韩东,盛荣昌.有初始横流的冲击壁面强化的换热特性实验研究[J].航空动力学报,1996,11(3):269-272,330-331. |
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| 作者姓名： | 张大林 常海萍 韩东 盛荣昌 |
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| 作者单位： | 南京航空航天大学，航空工业总公司６０８所，南京航空航天大学动力工程系 |
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| 摘 要： | 对初始横流的冲击壁面强化的换热特性进行了实验研究。实验的参数范围：Ｒｅｊ＝５０００－２００００，Ｚｎ＝１－３，Ｇｃ／Ｇｊ＝１－１．３。实验表明：随着初始横流的增加（Ｇｃ／Ｇｊ的增大），将改善冲击粗糙肋靶面的换热特性；Ｚｎ的变化对换热有着明显的影响，存在一个最佳值；实验结果还表明冲击孔与粗糙肋相对位置对换热有影响。
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| 关 键 词： | 冲击换热 冷却涡轮 |
| 收稿时间： | 6/1/1995 12:00:00 AM |
| 修稿时间： | 1995/10/1 0:00:00 |
AN EXPERIMENTAL STUDY OF HEAT TRANSFER BY JET IMPINGEMENT ON ROUGHENED SURFACE WITH INITIAL CROSSFLOW |
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| Zhang Dalin,Chang Haiping,Han Dong and Sheng Rongchang.AN EXPERIMENTAL STUDY OF HEAT TRANSFER BY JET IMPINGEMENT ON ROUGHENED SURFACE WITH INITIAL CROSSFLOW[J].Journal of Aerospace Power,1996,11(3):269-272,330-331. |
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| Authors: | Zhang Dalin Chang Haiping Han Dong and Sheng Rongchang |
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| Institution: | 2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016;2nd Dept.Nanjing University of Aeronautics and Astronautics, Nanjing 210016;Zhuzhou Power Plant Research Institute, Zhuzhou 412002 |
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| Abstract: | Impingement heat transfer from the rib roughened surface with two-dimensional arrays of circular jet has been investigated in comparison to the jet orifice plate.The study covered jet at Re j =5000-20000;the initial crossflow rate G c/G j =0-1 3;and nondimensional jet-to-surface spacing Z n=1 5,2,2 5,3.The experimental results show that the impingement heat transfer from the rib roughened surface will be improved by increasing the initial crossflow rate.The heat transfer characteristics are considerably affected by the jet-to-surfaces spacing,and there exists an optimum.The effect of relative position of jet hole to ribs on heat transfer has been observed. |
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| Keywords: | Shocks Heat transfer Cooling Turbines |
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