WES堰消力池底板脉动压力与噪声耦合试验

Experimental Research of Noise Coupling and Fluctuating Pressure Distribution on WES Overflow Weir's Plunge Pool

通过试验在不同流量和不同下游水位下对WES溢流堰消力池底板的脉动压力和水流噪声进行测量,研究WES溢流堰消力池底板水流脉动压力与水流噪声的关系。结果表明:水流脉动压力及噪声值都随流量的增大而增大,消力池底板水流脉动压力与噪声值有一定的相关性,脉动压力值最大断面与消力池噪声值最大断面相同,但变化趋势不完全相同;水流与固壁之间的相互作用和水流紊动是引起水流噪声的主要因素。

In order to study the relationships between flow fluctuating pressure of WES overflow weir’s stilling basin board and flow noise,it adopt-ed experimental modal to measure and record fluctuating pressure of stilling basin board and flow noise under the different rates of flow and levels of tail water. The analysis results show that water fluctuating pressure and noise value are increased with the increase of flow values;there are certain relationships between flow fluctuating pressure of stilling basin board and flow noise. Fluctuating pressure value’s maximum section is the same as stilling pool’s maximum noise value section,but possesses different variation trend respectively. Consequently,the main reason which causes water noise value owes to flow turbulence （the interaction between current）and interaction between water and solid wall.