基于CEL理论的弧形闸门流固耦合的数值模拟

针对弧形闸门结构受力复杂且受水流脉动压力作用可能发生剧烈振动而发生破坏的问题，以某水电站泄洪冲沙工作闸门为例，采用耦合欧拉-拉格朗日理论（CEL），利用有限元软件ABAQUS建立水体-闸门流固耦合模型，综合考虑了流激振动对水工金属闸门启闭过程中的闸门变形和动态响应的影响，获得了闸门振动位移、应力和接触力等的变化分布规律。结果表明，该方法可较准确地评价水工金属闸门的安全性和结构设计的合理性，为同类结构的设计评价提供了参考。

Numerical Simulation of Fluid Solid Coupling of Radial Gate Based on CEL Theory

Aiming at the complex structure and load of radial gate and the problem of severe vibration to cause the radial gates damage by the fluctuating pressure of water, taking a flood-discharge and sand-washing radial gate for an example, the coupled Euler-Lagrange theory (CEL) and finite element software ABAQUS are adopted to establish the fluid solid coupling model between the radial gate and water. The impact of flow-induced vibration on the deformation and dynamic response of the gate during the opening and closing of the metal radial gate is considered. The distributions of the displacement, stress and contact force of the gate are obtained. The results indicate that the method can accurately evaluate the safety and the rationality of structure design of hydraulic metal gate. It provides a reference for evaluations of similar structure design.