基于量纲分析的弧形闸门过流公式及其应用

分析了常规弧形闸门过流公式使用中存在的不足,在阐述基于量纲分析的弧形闸门无量纲关系式的基础上,进一步推导出弧形闸门过流公式,分析了其参数率定方法。将基于量纲分析的弧形闸门过流公式应用于某水利工程弧形闸门的水工物理模型试验中,使用试验数据率定其过流公式参数,并校验了率定精度。理论分析与试验结果表明,与常规的弧形闸门过流公式相比较,基于量纲分析的弧形闸门过流公式更为简单方便,参数率定精度更高,而率定所需的工作量大大减少。

Application of Flow Equation for Radial Gates Based on Dimensional Analysis Method

The disadvantages of conventional flow equation for radial gates were analyzed.Then the dimensionless equations for radial gates based on dimensional analysis method were described.Further the simple style flow equations for radial gates were deduced.The estimation of the equations coefficients was also analyzed.The flow equations were applied in the physical modeling of a radial gate.The coefficients of the equation were estimated based on experiments data.The discharge error of estimation was analyzed.Results showed that in comparison with conventional discharge algorithms of radial gates,flow equation based on dimensional analysis method was more general and accurate than the conventional ones.Furthermore,the estimation work of coefficients was greatly reduced.