| 脉冲液体射流泵时均值基本方程中的流速系数 |
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| 引用本文： | 高传昌,尚华,刘新阳,周文.脉冲液体射流泵时均值基本方程中的流速系数[J].水利水电科技进展,2006,26(1):13-15. |
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| 作者姓名： | 高传昌 尚华 刘新阳 周文 |
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| 作者单位： | 华北水利水电学院动力工程系,河南,郑州,450011 |
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| 基金项目： | 中国科学院资助项目;河南省教育厅自然科学基金 |
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| 摘 要： | 运用非恒定的动量方程和时均值计算方法,对脉冲液体射流泵时均值基本方程中的流速系数进行了理论研究,推导出了喉管和喉管进口段流速系数φ2和φ5的计算式。通过与恒定射流的流速系数计算式对比,阐明了脉冲频率是影响φ2和φ5的主要因素,沟通了脉冲射流与恒定射流流速系数之间的关系。
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| 关 键 词： | 脉冲液体 射流泵 流速系数 |
| 文章编号： | 1006-7647(2006)01-0013-03 |
| 修稿时间： | 2005年3月28日 |
Velocity coefficients of time-averaged basic equations for pulsed liquid jet pump |
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| GAO Chuan-chang,SHANG Hua,LIU Xin-yang,ZHOU Wen.Velocity coefficients of time-averaged basic equations for pulsed liquid jet pump[J].Advances in Science and Technology of Water Resources,2006,26(1):13-15. |
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| Authors: | GAO Chuan-chang SHANG Hua LIU Xin-yang ZHOU Wen |
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| Abstract: | The calculation formulas for velocity coefficients φ_2 and φ_5 for the throat and throat inlet section were deduced from the theoretical research on the velocity coefficients in time-averaged basic equations by use of the unsteady momentum equation and time-averaged value calculation method.The comparison of the calculation formula for unsteady jet flow with that of steady jet flow demonstrates that the pulse frequency is the main factor influencing the velocity coefficients φ_2 and φ_5,and the relationship between the velocity coefficients of pulsed jet flow and steady jet flow was revealed. |
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| Keywords: | pulsed liquid jet pump velocity coefficient |
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