[1]杨玲霞,吴建平..阻抗式调压室水位小波动稳定性研究[J].郑州大学学报(工学版),1999,20(03):4.[doi:10.3969/j.issn.1671-6833.1999.03.002]
　Yang Lingxia,Wu Jianping.Study on the stability of small fluctuation of water level in impedance pressure regulating chamber[J].Journal of Zhengzhou University (Engineering Science),1999,20(03):4.[doi:10.3969/j.issn.1671-6833.1999.03.002]

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阻抗式调压室水位小波动稳定性研究()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

20

期数:

1999年03期

页码:

4

栏目:

出版日期:

1999-01-01

文章信息/Info

Title:

Study on the stability of small fluctuation of water level in impedance pressure regulating chamber

作者:

杨玲霞; 吴建平.

郑州工业大学水利与环境工程学院,河南,郑州,450002

Author(s):

Yang Lingxia; Wu Jianping

关键词:

调压室;  阻抗;  稳定断面

Keywords:

pressure regulating chamber;  impedance;  Stabilize the cross-section

DOI:

10.3969/j.issn.1671-6833.1999.03.002

文献标志码:

A

摘要:

针对阻抗式调压室水位波动时底部水流的流态特性,分析了小波动情况下阻抗损失的变化规律,认为按阻抗损失与速度的一次方成比例来考虑阻抗作用较为合理.将其引入基本方程式中进行稳定性分析后,推导出阻抗式调压室水位在小波动情况下的稳定条件及临界稳定断面计算公式.结果表明,选择适当大小的阻抗型式,有助于提高调压室水位小波动的稳定性,相应的调压室临界稳定断面将小于托马临界稳定断面.

Abstract:

According to the flow characteristics of the bottom water flow when the water level of the impedance pressure regulating chamber fluctuates, the change law of impedance loss under small fluctuations is analyzed, and it is considered that it is more reasonable to consider the impedance effect in proportion to the impedance loss and the first square of the velocity. After introducing it into the basic equation for stability analysis, the stability condition and critical stability section calculation formula of the water level of the impedance pressure regulating chamber under small fluctuations are derived. The results show that selecting an appropriate impedance type can help to improve the stability of small fluctuations in the water level of the pressure regulating chamber, and the critical stability section of the corresponding pressure regulating chamber will be smaller than that of Thoma.

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