The empirical coefficient equations are drawn out by numerically analyses of 10 kinds of hydraulicmodels with excellent performances.
分别归纳10种优秀水力模型，采用数值分析法拟合出经验系数方程序。
2
The nominal head was presented for preliminary selection of hydraulicmodels, with consideration of the efficiency and reliability at all operation conditions.
为了兼顾各种特征扬程工况下的运行效率和可靠性，在水力模型初选阶段提出了选型名义扬程的概念。
3
The model scale and the ratio of prototype to model for various hydraulic elements are selected in the light of theory of unsteady flow similarity for hydraulicmodels.