进水口形式对闸墙长廊道船闸输水系统影响的数值模拟

Numerical simulation of influence of inlet type on water conveyance system of lock wall long corridor ship lock

船闸进水口水流条件关系到输水系统的输水效率、船舶停泊安全,因此进水口的形式布置是船闸水力设计和模型试验的重要内容之一。针对两种常见的进水口布置形式,结合某船闸输水系统的具体条件,采用数值模拟的方法,从输水水力特性、水流流态方面对比分析了这两种进水口布置形式对于输水系统的影响,研究结果表明:对于闸墙长廊道船闸输水系统,相对于进水口外侧导墙拉直,进水口外侧导墙斜拉的工程措施在控制惯性超高和闸室水面最大上升速度、增强进水支孔流量过程稳定性、改善进水口水流流态方面更具优势。研究成果可为船闸输水系统进水口布置提供技术参考。

The flow conditions at the inlet of a ship lock are related to the efficiency of the water conveyance system and the safety of ship berthing.The layout of the inlet is an important part of the hydraulic design and model testing of the ship lock.This paper focuses on two common types of inlet layout combined with the specific conditions of the water conveyance system of a ship lock and uses numerical simulation methods to compare and analyze the impact of these two types of inlet layout on the water conveyance system from the aspects of water conveyance hydraulic characteristics and flow state.The results show that for the lock wall long corridor ship lock water conveyance system the engineering measures of diagonal pulling of the outer guide wall of the water inlet have more advantages in controlling the ultra-high inertia and the maximum rising speed of the gate chamber water surface enhancing the stability of the flow process of the inlet branch hole and improving the flow state of the water inlet relative to the outer guide wall of the inlet.The results can provide technical reference for the layout of the inlet of the lock water.