闸门开启过程中非恒定流与闸下消能防冲的研究(2)——灌区水闸启门过程中非恒定流数值模拟

STUDY ON UNSTEADY FLOW AND THE ENERGY DISSIPATION AND SCOUR PREVENTION UNDER THE GATE DURING GATE OPENING PROCESS (Ⅱ)——NUMERICAL SIMULATION OF UNSTEADY FLOW IN THE PROCESS OF OPENING GATE IN IRRIGATION DISTRICT

利用物理模型对闸门开启过程中水流进行研究，证明了闸门开启过程中和全开之后一段时间内非恒定流的存在。以圣维南方程为基础建立数学模型，利用物理模型实验数据验证，并分析了主要影响因素。从而得到适用于模拟闸门开启过程中渐变非恒定流的数学模型，为寻找水闸消能防冲设计参数提供依据。该模型经过辽阳灯塔灌区实测数据的验证，是正确合理的。

The existence of unsteady flow during opening sluice gate and during a long time after opening sluice gate was proved through studying the flow in the process of opening sluice gate by using physical model.A mathematical model based on Saint-Venant Partial Differential Equation was built,the model was lested by using experimental data,the main factors affecting the model was analysed.The model is applocable to the unsteady gradually varied flow during opening sluice gate.The model can provide some reference for dissipation of energy and erosion protection.The model was tested by the data from Deng Ta irrigation district in Liaoyang.and was proved correct and reasonable.