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| 反拱水垫塘拱圈底板动水压强时域与频域的变化规律 | |
| 引用本文： | 樊新建,孙建,张金明,赵燕华.反拱水垫塘拱圈底板动水压强时域与频域的变化规律[J].兰州理工大学学报,2009,35(1). |
| 作者姓名： | 樊新建 孙建 张金明 赵燕华 |
| 作者单位： | 1. 兰州理工大学,流体动力与控制学院,甘肃,兰州,730050;西安理工大学,水电学院,陕西,西安,710048 2. 西安理工大学,水电学院,陕西,西安,710048 3. 水利部珠江水利委员会珠江水利科学研究院,广东,广州,510611 4. 陕西广播电视大学,理工教学部,陕西,西安,710048 |
| 摘 要： | 设计试验装置,测量高水头和大流量作用下反拱水垫塘全流场内拱圈底板动水压强.利用分析方法,得出拱圈底板表面与底板缝隙动水压强自相关特征和时空相关特征的变化规律,分析其与反拱水垫塘内水流的流动结构和流态之间的关系,揭示拱圈底板动水压强的变化和传播机理;对其频域特性进行分析,结果表明:拱圈底板表面动水压强的优势频率分布范围较广并比底板缝隙内的宽,其峰值频率分布范围主要集中在0～1 Hz,脉动能量均以低频为主. |
| 关 键 词： | 反拱水垫塘 拱圈底板 动水压强 时域 频域 |
Variation pattern of hydrodynamic pressure on arched ring slabs in arch invert water-cushion pool in time and frequency domain |
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| FAN Xin-jian,SUN Jian,ZHANG Jin-ming,ZHAO Yan-hua.Variation pattern of hydrodynamic pressure on arched ring slabs in arch invert water-cushion pool in time and frequency domain[J].Journal of Lanzhou University of Technology,2009,35(1). | |
| Authors: | FAN Xin-jian SUN Jian ZHANG Jin-ming ZHAO Yan-hua |
| Institution: | 1.Collage of Fluid Power and Control;Lanzhou Univ.of Tech.;Lanzhou 730050;China;2.Institute of Water Resources and Hydraulic Power;Xi'an University of Technology;Xi'an 710048;3.The Pearl River Water Research Institute;Guangzhou 510611;4.Department of Science Teaching;Shaanxi Radio & TV University;China |
| Abstract: | The experimental device was designed,and the hydrodynamic pressure on the arched-ring slabs in the arch invert water-cushion pool was measured in detail for the case of high water head and large discharge.Using the method of correlation analysis,the variation pattern of the characteristics of autocorrelation and time space correlation of hydrodynamic pressure on the arch ring slabs and in the slit of base slabs was obtained,its relations with flow structure and flow form in arch invert water-cushion pool we... |
| Keywords: | arch invert water-cushion pool arched ring slabs hydrodynamic pressure time domain frequency domain |
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