关键词: Morris 筛选法, 水锤计算模型, 事故停泵, 局部敏感性分析, 输水工程

Abstract: The numerical simulation method provides reasonably good technical support for the use of reasonable water hammer protection for pipeline water transmission projects. Based on the characteristic line method, using the perturbation analysis method (fixed step size 5%, perturbation range ± 25%) and modified Morris filter method, the local sensitivity analysis on the parameters of the water hammer calculation model in the accidental pump-stop condition was performed to strengthen the identification of the model parameters and uncertainty analysis. The results showed that the descending order of sensitivity of seven parameters that are related with the maximum water hammer pressure in the model was valve closing time, pipe diameter, water flow, friction coefficient, water hammer wave speed, unit rotational inertia, pipeline length.

Key words: Morris filter method, water hammer calculation model, accidental pump-stop, local sensitivity analysis, water conveyance project