水利水电科技进展2025，Vol.45Issue(4)：1-8,8.DOI:10.3880/j.issn.1006-7647.2025.04.001
水力参数对城市景观闸坝泄流噪声的影响
Influence of hydraulic parameters on discharge noise of urban landscape dams
摘要
Abstract
To effectively control the discharge noise of urban landscape dams,the RNG k-ε turbulence model and FW-H acoustic model were used to simulate the flow field and noise of dam discharge.The influence of different hydraulic parameters on the discharge noise characteristics was analyzed.The results show that with the increase of flow rate or water depth over the weir,the discharge velocity and dynamic pressure increase,the degrees of water turbulence and vortex in the stilling pool intensify,and the sound pressure level and sound power spectral density of noise increase.With the increase of downstream water depth,the discharge velocity and dynamic pressure decrease,and the sound pressure level and sound power spectral density of noise decrease.The dominant frequency of discharge noise ranges from 500 to 1000 Hz under different flow rates and downstream water depths,and it ranges from 500 to 1200 Hz under different water depths over the weir.The discharge velocity is significantly positively correlated with the sound pressure level in the discharge area and the sound power spectral density in the non-overflow side wall area.The turbulent kinetic energy is significantly positively correlated with the sound pressure level in the discharge area and the sound power spectral density in the discharge section.The dynamic pressure is significantly positively correlated with the sound pressure level in each region and the sound power spectral density in the discharge area.There is a significant positive correlation between the vorticity and sound pressure level in the side wall area of non-overflow section.There is no significant correlation between the flow field factors and the main frequency of the discharge noise.关键词
景观闸坝/泄流噪声/水力参数/噪声特性/数值模拟Key words
landscape dam/discharge noise/hydraulic parameters/noise characteristics/numerical simulation分类
建筑与水利引用本文复制引用
王煜,洪凯,石敏..水力参数对城市景观闸坝泄流噪声的影响[J].水利水电科技进展,2025,45(4):1-8,8.基金项目
国家自然科学基金项目(52279070) （52279070）
宜昌市自然科学研究项目(A23-2-016) （A23-2-016）
