A numerical simulation method and system for objects falling in ocean currents

A numerical simulation and ocean current technology, applied in the field of numerical modeling and simulation, can solve problems such as inability to safely reach the destination point, falling interference, cable breakage, etc., and achieve the effects of flexible establishment and setting, wide practicability, and great flexibility

Active Publication Date: 2022-07-01
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the increasingly complex operating environment, when deep-sea cranes are operating at sea, many interference problems have occurred in the process of the load falling after entering the water
The load may not reach the destination safely due to sea waves, ocean currents and the ship's own navigation
This may cause collision between the deck and the load, resulting in damage, or the cable may break due to excessive tension, causing more serious safety problems

Method used

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  • A numerical simulation method and system for objects falling in ocean currents
  • A numerical simulation method and system for objects falling in ocean currents
  • A numerical simulation method and system for objects falling in ocean currents

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Experimental program
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Embodiment 1

[0043] The invention provides a numerical simulation method for objects falling in ocean currents, including: establishing a pool model and an object model according to initial pool parameters and initial object parameters;

[0044] The pool model is meshed according to the preset grid parameters; according to the preset ocean current parameters, the boundary conditions and fluid motion parameters of the pool model are set to form a simulated ocean current model;

[0045] According to the preset physical parameters, a free fall model of the object model in the liquid is established; the step of establishing the free fall model includes setting the moving grid of the falling object model: generating the background mesh of the hexahedral area; Embedding into the background grid via the offset grid;

[0046] Import the free fall model of the object model in the liquid into the simulated ocean current model, start the simulation step, and simulate the output of the object model's ...

Embodiment 2

[0059] This embodiment discloses a method for establishing a numerical simulation model for objects falling in ocean currents, specifically:

[0060] figure 1 This is a flow chart of a numerical simulation method for objects falling in ocean currents according to this embodiment.

[0061] like figure 1 As shown, the numerical simulation method for objects falling in ocean currents in this embodiment includes:

[0062] According to the initial pool parameters and object parameters, the pool model and the object model are established to form a simulated pool environment, and the pool model is meshed according to the preset grid parameters;

[0063] According to the preset ocean current parameters, set the boundary conditions of the pool model and the parameters of the fluid flow to form a simulated ocean current model;

[0064] According to the preset object parameters, set the gravity parameters to form the gravity environment, and establish the model of the object falling f...

Embodiment 3

[0115] Figure 8 It is a schematic structural diagram of a numerical simulation system for objects falling in ocean currents according to this embodiment.

[0116] like Figure 8 As shown, this embodiment provides a numerical simulation system for objects falling in ocean currents, including:

[0117] (1) A model building module, which is used to establish a pool model and an object model according to the initial pool parameters and object parameters, form a simulated pool environment, and divide the pool model according to preset grid parameters; The initial conditions and boundary conditions of the pool are set to realize the flow of the fluid in the numerical pool.

[0118] The grid parameter is the grid spacing in the XYZ three-dimensional coordinate system, the spacing values ​​are all equal, and the spacing value is an adjustable value.

[0119] (2) A simulation ocean current environment formation module, which is used to set the boundary conditions of the model accor...

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PUM

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Abstract

The invention provides a numerical simulation method and system for objects falling in ocean currents, wherein a pool model and an object model are established according to initial pool parameters and initial object parameters; the pool model is divided into grids according to preset grid parameters ; According to the preset ocean current parameters, set the boundary conditions and fluid motion parameters of the pool model to form a simulated ocean current model; According to the preset physical parameters, establish a free fall model of the object model in the liquid; The step of establishing the free fall model includes setting The moving mesh of the falling object model: generate the background mesh of the hexahedral area; embed the falling sub mesh of the object model into the background mesh through the offset mesh; import the free fall model of the object model in the liquid into the simulated ocean current model, Start the simulation step; the present invention conveniently simulates the falling process of different objects under different ocean currents, and the cost is lower.

Description

technical field [0001] The invention belongs to the field of numerical modeling and simulation, and particularly relates to the establishment and method analysis of a numerical simulation model for objects falling in ocean currents. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] With the gradual increase in the exploration of deep-sea resources, the operation of deep-sea cranes to lower objects in the ocean is more and more widely used. Due to the increasingly complex operating environment, when deep-sea cranes are operating at sea, there are many interference problems in the process of falling loads after entering the water. Loads may not reach the intended placement point safely due to waves, currents, and the ship's own navigation. This can lead to a collision between the deck and the load, resulting in damage, or the cable breaking ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/38G06F111/10
Inventor 马昕陈文姝宋锐荣学文田国会李贻斌
Owner SHANDONG UNIV
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