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Numerical simulation method for ship lock chamber ship mooring force

A numerical simulation and mooring force technology, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as large manpower and material resources, calculation difficulties, and inconsistency of ship motion process.

Inactive Publication Date: 2014-04-16
CHONGQING JIAOTONG UNIVERSITY
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Problems solved by technology

Due to the complexity of the force process of the ship in the lock chamber, the establishment of the above vibration equations assumes that the buoyancy of the ship is always in balance with the gravity, which is inconsistent with the actual process of the ship
In addition, the lateral force of the ship is also an important research content of the berthing conditions of the lock chamber, but the above vibration equation only considers the longitudinal force of the ship
[0004] Due to the many difficulties in numerical calculation of ship mooring force in the lock chamber during the water delivery process of the ship lock, physical model tests and on-site prototype observation methods are mainly used at present, which consume a lot of manpower and material resources, and the accuracy of the research results is affected by the test conditions and scale effects. influences

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  • Numerical simulation method for ship lock chamber ship mooring force
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  • Numerical simulation method for ship lock chamber ship mooring force

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Embodiment Construction

[0042] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0043] The preferred embodiment of the present invention selects the numerical simulation of the ship's mooring force in the lock chamber during the flooding process of the ship lock, and the selected ship lock water delivery type is a short corridor centralized water delivery system with a grid energy dissipation chamber, and the effective size of the ship lock lock chamber is 140m × 14m × 2.5m (length × width × minimum water depth above the sill), the left and right side corridors are arranged symmetrically, the maximum working head of the valve is 9m, and both sides of the valve are opened at a constant speed of 7 minutes. Combined with the basic scale of the lock, the 300t-class single ship docked in the center of the lock chamber is selected as the calculation object. In view of the various body shapes of actual ships, the present inve...

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Abstract

The invention discloses a numerical simulation method for ship lock chamber ship mooring force, and belongs to the technical field of ship lock hydrodynamics. The method is based on a 'ship-water flow' coupling power response, and a ship movement control equation and a longitudinal and transverse stress equation are built. Then, a platform is calculated through FLUENT fluid, a lock chamber ship mooring force parallel computing program is established with the help of a UDF, and lock chamber ship mooring force numerical simulation is achieved by building a ship clock overall water delivery system three-dimensional mathematic model. The mooring force simulation method is good in precision, the mooring force of a lock chamber ship can be obtained fast and conveniently, the method can be applied to the research and analysis of the lock chamber ship mooring force in the ship lock water delivery nonconstant process, and therefore the problem that a time-consuming and arduous physical modelling experiment is excessively used as a study method at present is solved.

Description

technical field [0001] The invention belongs to the technical field of ship lock hydrodynamics, and relates to a numerical simulation method for ship mooring force in a ship lock chamber. Background technique [0002] The berthing safety of lock chamber ships has always been the most concerned issue in the design and management of ship locks, and the quality of berthing conditions for ships is usually judged by the size of the ship's mooring force. To study the mooring force of ships in lock chambers, it is first necessary to consider the hydrodynamic loads acting on the mooring system of ships passing through locks. The interaction between the ship in the lock chamber and the water body during the water delivery process of the lock chamber is a "floating body-water flow" coupling dynamic response problem, that is, when the lock is filled with water, the mooring system of the ship in the lock chamber will be affected by the water flow, and at the same time, the hull will ris...

Claims

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Application Information

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IPC IPC(8): G06F19/00G06F17/50
Inventor 陈明陈明栋宣国祥杨胜发
Owner CHONGQING JIAOTONG UNIVERSITY
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