消力池内部水流动量对水噪声的影响  

Influence of Flow Momentum on Water Noise in the Stilling Basin

作　　者：柴雪 郭维东[1] 管福瑞 芦晓峰[1] 胡艳 隋吉庆 张晓琳 何永鹏 姜涛 CHAI Xue;GUO Weidong;GUAN Furui;LU Xiaofeng;HU Yan;SUI Jiqing;ZHANG Xiaolin;HE Yongpeng;JIANG Tao(School of Water Conservancy,Shenyang Agricultural University,Shenyang 110161,China;Northeast Yucai School,Shenyang 110000,China;Shenyang Shunyuande Engineering Consulting Co.,Ltd.,Shenyang 110000,China)

机构地区：[1]沈阳农业大学水利学院,辽宁沈阳110161 [2]东北育才学校,辽宁沈阳110000 [3]沈阳顺源德工程咨询有限公司,辽宁沈阳110000

出　　处：《人民黄河》2020年第3期97-100,116,共5页Yellow River

基　　金：国家自然科学基金资助项目(31200392);辽宁省农业领域青年科技创新人才培养计划项目(2015048)

摘　　要：为探索水流在消力池产生的水噪声随水流动量大小的变化规律,通过物理模型试验分析消力池内部水流动量对水流声压级的影响。结果表明:水流声压级随水流动量的增大而增大,二者成线性相关关系,且水流动量变化的幅值越大,其产生的水噪声声压级越大;应用SPSS数据分析软件得到消力池内部水流动量与声压级的拟合曲线;根据能量守恒原理,减小的动能部分以振荡能的形式存在,这其中就包含人耳所听到的水噪声。拟合曲线为水噪声的预测工作提供了理论基础。In order to explore the variation rule of water noise with flow momentum under law Froude number,the influence of water flow mo⁃mentum on the sound pressure level in the stilling pool was analyzed by means of physical model experiment.The results show that the sound pressure level increases with the increase of water flow momentum,and there is a linear positive correlation between them.SPSS is used to obtain the fitting curve of water flow momentum and sound pressure level at the inlet of the stilling basin.According to the principle of energy conservation,the reduced kinetic energy is converted into heat and dissipated,and some are dissipated in the form of oscillatory energy,which includes the water noise heard by the human ear.The prediction of water noise of fitting curve provides theoretical basis,which shows that curve fitting has practical significance.

关 键 词：消力池 水流动量 声压级 水噪声 模型试验 

分 类 号：TV131.61[水利工程—水力学及河流动力学]