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Three-dimensional visualized algorithm for maritime oil spill

A marine oil spill, three-dimensional technology, applied in the field of visualization, to achieve the effect of protecting the marine environment, simple implementation, and small amount of calculation

Inactive Publication Date: 2010-05-12
DALIAN MARITIME UNIVERSITY
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AI Technical Summary

Problems solved by technology

Although the work of the above scholars involves oil spill visualization technology, they are more focused on the numerical simulation of oil spill. The oil numerical simulation results are displayed, which can only be called a two-dimensional visualization of oil spill or a two-dimensional demonstration

Method used

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  • Three-dimensional visualized algorithm for maritime oil spill

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0031] 1. Calculation and simulation of the trajectories of each stage of oil spill

[0032] When the oil spill just enters the water body, the self-expansion of the oil film is the most important behavior, and after the oil spill occurs for a period of time, the drift and diffusion gradually occupy the main position in the oil film movement, so the invention decomposes the oil spill process in a relatively short time scale into There are two stages of oil film self-expansion and oil film drift and diffusion. In each stage, corresponding mathematical models and simulation methods are used to calculate and simulate the trajectory of oil spill.

[0033] 1) Calculation and simulation of oil film self-expansion trajectory

[0034] The model proposed by Lehr et al. can better simulate the self-spreading process of the oil spill. The model believes that the oil film expand...

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Abstract

The invention relates to a three-dimensional visualized algorithm for maritime oil spill, which is realized in a way that: on the basis of drawing a large-scale sea level scene, dividing an oil spill process within a short time scale into an oil film self-spreading stage and an oil film drift diffusion stage, and calculating the oil spill loci of the two stages respectively by selecting an Lehr model and an oil particle model; simulating the oil particle model by using a particle system; and visualizing the oil spill loci on the simulated sea level by utilizing a planar refraction technology, accessing the veins in a fragment shader of a GPU by projecting vein coordinates, and simulating and reproducing the three-dimensional scene of maritime oil spill while drawing the sea level refraction effect. The algorithm solves the problems of simulation of the oil particle model, visualization of the oil spill loci on the simulated sea level, and the like, and realizes the vivid and visual simulation of the three-dimensional movement change process of oil spill within a short time scale.

Description

technical field [0001] The invention belongs to the field of visualization, and relates to a three-dimensional visualization algorithm for oil spill at sea. Background technique [0002] The visualization of oil spill is to display the results of numerical simulation of oil spill graphically in real time and dynamically, so that the movement and change process of oil spill on the sea can be seen visually and intuitively. The visualization of oil spill is one of the development directions of marine oil spill research, and a few scholars have conducted research in this area. Chao [1] Two-dimensional and three-dimensional coastal oil spill models have been developed. The two-dimensional model divides the oil film into many grids, and the three-dimensional model numerically simulates the distribution and movement of oil particles in seawater. Liu Yancheng and others [2，3] A mathematical model for the process of oil spill expansion and drift at sea was established, and the oil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00G06T15/50
Inventor 任鸿翔金一丞尹勇张秀凤任俊生刘秀文张新宇孙霄峰
Owner DALIAN MARITIME UNIVERSITY
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