Numerical Simulation Study Of Mooring Force Under Different Collateral Holes Arrangement

The water dynamic researches about collateral hole of bottom-brake and long-corridor filling and emptying system, nowadays, mainly use the physical model test and field prototype observation method, it needs to consume a large amount of manpower and material resources. There are relative few researches with numerical calculation method which is fast and convenient and not affected by test conditions and the achievements effect of scale. Therefore, There are important academic value and practical significance to do the water dynamic researches about collateral hole of bottom-brake and long-corridor filling and emptying system through the ship mooring force of lock chamber by numerical simulation, get the dynamic characteristic of systemic study and summarize the principles of arrangement, provide the theory basis for design and optimization of the filling and emptying system, and provide reference for similar engineering design and construction.This article is based on typical brake promenade distributed water conveyance system, choose the representative ship form, use gambit software to establish "ship- water" coupling dynamic response of three-dimensional mathematical model, use the dynamic grid technique and lock chamber ship’s mooring force parallel computing program, with the help of fluent software, do some researches about ship mooring force in lock chamber under different collateral hole arrangement type by numerical simulation, the main research works and conclusions are as follows:1、Based on a practical project, established the three dimensional overall model of locks, we studied the ship mooring force, and compared the simulation results with the measured data, well demonstrated the validity of the numerical model and calculation method,and laid the foundation for later water dynamics research with different collateral hole arrangement type.2、We studied the early ship mooring force by the three-dimensional turbulent flow simulation method and dynamic grid technique, under the analysis of ship longitudinal and transverse mooring force in different collateral under the hole arrangement type, verified the collateral of hole arrangement type and the mooring force.3 、 Through in-depth hydraulic characteristics analysis of the characteristic sections, we conclude the general arrangement principles of the type of the collateral hole of bottom-brake and long-corridor filling and emptying system:①Along the flow direction, the big to small arrangement of collateral hole from can obtain better shunt effect;②The value of Collateral hole height to width is more close, the energy dissipation effectis better;③After the lock chamber effective scale is decided, there is a optimal value in collateral hole number choice.