重叠布置泄水建筑物坝面隔墙脉动压力特性研究

Study on characteristics of fluctuating pressure on dam surface partitions between discharge structures of overlapping layout

采用数值模拟的方法,利用大涡模型对重叠布置泄水建筑物泄流工况进行模拟计算,试验数据验证结果表明数值模拟方法合理可行。根据实测数据和计算结果,对坝面隔墙处脉动压力特性进行分析研究。通过对流场分布、频谱分析以及脉动压力强度系数等研究,分析得出脉动压力的脉动源以及脉动压力在隔墙上的分布规律。

Based on the numerical simulation concerned, the discharge operation conditions of the discharge structures of overlapping layout are simulated with the method of the large-eddy simulation ; from which the verification result of the testing data shows that the method of the numerical simulation is reasonable and feasible. In accordance with the measured data and the calculated result, the characteristics of the fluctuating pressures on the dam surface partitions are analyzed. Through the studies on the flow field distribution, spectral analysis and the intensity coefficients of the fluctuating pressures, the pulsating sources of the fluctuating pressures and the distribution law of the pressure are obtained from the analysis.