A Numerical Simulation Method of Dynamic Water Resistance Moment when Opening and Closing a Lock Gate

Abstract

The invention relates to a numerical simulation method of hydrodynamic resistance torque when in opening and closing of a straight gate of a navigation lock, belonging to the technical field of navigation lock hydraulics. Based on an FLUENT fluid computation platform, the opening and closing dynamic process of the straight gate is controlled by virtue of a User-Defined Function (UDF), and numerical simulation of the hydrodynamic resistance torque in the opening and closing dynamic process of the straight gate is realized through establishing a three-dimensional mathematical model of the straight gate of the navigation lock, a gate chamber region and a lock chamber. The numerical simulation method proposed by the invention has the advantages that the accuracy is good, the possibility of fast and conveniently acquiring the hydrodynamic resistance torque when in opening and closing of the straight gate of the navigation lock can be provided, the numerical simulation method can be applied to determination of the hydrodynamic resistance torque of the straight gate of the navigation lock, determination of opening and closing force, design of capacity of a hoist, optimization of boundary conditions of a gate chamber, and the like, and the problems existing in test and study means of a physical model of time and energy waste, and the like can be solved.

Description

technical field [0001] The invention relates to a numerical simulation method for dynamic water resistance torque when a ship lock gate is opened and closed, and belongs to the technical field of ship lock hydraulics. Background technique [0002] The dynamic characteristics of gate opening and closing under the conditions of high water head and large submerged water depth have always been an important topic in the field of large-scale ship lock construction and research. It has special advantages in operating conditions such as large width and narrow flight width. However, as the submerged water depth of the ship lock gate increases, the water flow phenomenon will become more and more complicated, and the hydrodynamic problems will be more difficult. The effect of dynamic water resistance has increased significantly, which poses challenges to the gate structure design, gate storage layout, hoist capacity design, and hoist operation mode. Therefore, the hydrodynamic charact...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is: to overcome the shortcomings of the above-mentioned technologies, and aim at the time-consuming and labor-intensive problems of physical model tests and prototype observation research in the prior art, and provide a numerical value of the dynamic water resistance torque when the gate of the ship lock is opened and closed Simulation method, which can accurately determine the hoisting force of the lock gate and can assist in optimizing the design of hoist capacity and the boundary of gate storage, etc.

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