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Numerical simulation method and system for object entering water

A numerical simulation and object technology, applied in the direction of complex mathematical operations, instruments, informatics, etc., can solve the problems of external influence on results, time-consuming, expensive physical experiments, etc., to achieve wide practicability, great flexibility, establishment and setting flexible effects

Active Publication Date: 2019-12-20
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The inventor found that in order to establish a control model and design a control scheme for an object to enter the water smoothly, the hydrodynamic analysis of the object’s entry into the water should be obtained in advance, but the physical experiment is not only expensive, but also time-consuming, and the results obtained will be subject to varying degrees. external influence

Method used

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  • Numerical simulation method and system for object entering water
  • Numerical simulation method and system for object entering water
  • Numerical simulation method and system for object entering water

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Embodiment 2

[0098] Figure 14 It is a structural schematic diagram of a numerical simulation system for an object entering water in this embodiment.

[0099] Such as Figure 14 As shown, the present embodiment provides a numerical simulation system for an object entering water, including:

[0100] (1) model construction module, it is used for according to initial pool parameter and object parameter, constructs pool model and object model respectively; Described pool model comprises static pool model and the imitation pool model with wave;

[0101] (2) a simulated pool environment forming module, which is used to mesh the pool model according to preset grid parameters, calculate the pool boundary conditions of the pool model, and form a simulated pool environment;

[0102] Wherein, the pool model includes a static pool model and a simulated pool model with waves.

[0103] In the formation module of the simulated pool environment, in the process of calculating the pool boundary condition...

Embodiment 3

[0108] This embodiment provides a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps in the numerical simulation method for an object entering water as described in Embodiment 1 are implemented.

Embodiment 4

[0110] This embodiment provides a computer terminal, including a memory, a processor, and a computer program stored on the memory and operable on the processor. When the processor executes the program, the object entering water as described in Embodiment 1 is realized. Steps in the numerical simulation method.

[0111] Those skilled in the art should understand that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Accordingly, the present disclosure may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.

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Abstract

The invention provides a numerical simulation method and system for an object entering water. The numerical simulation method for the object entering the water comprises the following steps: respectively constructing a water pool model and an object model according to initial water pool parameters and object parameters, wherein the pool model comprises a still water pool model and a pool-like model with waves; performing mesh generation on the pool model according to preset mesh parameters, and calculating pool boundary conditions of the pool model to form a simulation pool environment; and importing the object model with the preset object motion trail into a simulation pool environment, starting a simulation step, and simulating the distribution of a free surface of output water, the distribution of pressure borne by an object and the speed change of the object, wherein in the process of realizing the simulation step, a mass conservation equation, a momentum conservation equation anda volume fraction transport equation of the simulation object in the process of falling into the simulation pool environment are solved by utilizing a multi-phase flow solver, and a simulation resultis obtained. According to the invention, the water entry process of different objects under different sea conditions can be conveniently simulated, and the cost is lower.

Description

technical field [0001] The disclosure belongs to the field of numerical simulation, and in particular relates to a numerical simulation method and system for an object entering water. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] In the case of harsh sea conditions, it is an extremely important issue in marine engineering to hoist cargo safely and smoothly into seawater for project construction. The most critical problem is that when the cargo enters the sea at a certain initial velocity, it is subjected to the hydrodynamic impact of the sea surface. In some cases, the cargo may be damaged or swing sharply, and the crane cable will be damaged due to the irregular movement of the object. If the force is uneven, if the tension exceeds the maximum pressure of the cable, the cable will break and serious accidents will occur. Therefore, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/11G16Z99/00
CPCG06F17/11G16Z99/00
Inventor 马昕王凯宋锐荣学文李贻斌
Owner SHANDONG UNIV
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