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A three-dimensional ocean wave simulation optimization method for dynamic positioning ship offshore operation

A dynamic positioning, three-dimensional ocean wave technology, applied in the field of three-dimensional visual simulation, can solve the problems of ignoring the authenticity and fidelity of ocean wave simulation, difficult wave simulation effect, only considering the ideal state, etc., to meet the real-time performance and increase the sense of reality. and interactive effects

Active Publication Date: 2018-12-14
JIMEI UNIV
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Problems solved by technology

[0006] The existing technology only uses wind to calculate the one-dimensional wave spectrum, ignoring the influence of other factors such as ocean currents, and cannot truly reflect the wave environment. The conversion of the wave spectrum does not take into account other interference and changes that will occur during the conversion process, only considering The ideal state does not match the actual situation. After two Chirp Z transformations, the speed of wave simulation is simply pursued, while the authenticity and fidelity of wave simulation are ignored.
Using this method for simulation does not consider the whole, so it is difficult to physically reflect the complex wave simulation effect

Method used

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  • A three-dimensional ocean wave simulation optimization method for dynamic positioning ship offshore operation
  • A three-dimensional ocean wave simulation optimization method for dynamic positioning ship offshore operation
  • A three-dimensional ocean wave simulation optimization method for dynamic positioning ship offshore operation

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Embodiment Construction

[0053] The technical solution of the present invention will be specifically described below in conjunction with the accompanying drawings.

[0054] The invention provides a three-dimensional sea wave simulation optimization method for dynamic positioning ships operating at sea. Firstly, the terrain block is triangulated to form a triangular grid to construct the sea level; Transform to generate a height map, then calculate the height field and simulate the generation of ocean waves; then use GPU and CPU parallel computing acceleration to optimize, and finally use the Vega Prime visual development platform to simulate and display the simulation effect of ocean waves. The specific implementation steps of this method are as follows:

[0055] Step S1. Divide the terrain block into triangles to form a triangle grid to construct the sea level. The basic idea is to divide the entire scene terrain block Landscape into multiple easy-to-operate Patch blocks for processing based on trian...

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Abstract

The invention relates to a three-dimensional ocean wave simulation optimization method for dynamic positioning ship offshore operation. Firstly, the terrain blocks are triangulated to form triangularmeshes to construct sea level. Then, considering the main action and influence factors of ocean waves-wind, current and so on, the height map is generated based on Fast Fourier Transform (FFT), and then the height field is calculated and simulated to generate ocean waves. Then the GPU and CPU are used to speed up the parallel computing. Finally, the Vega Prime visual development platform is used to simulate and show the wave simulation results. The optimized simulation method can model and render ocean waves scientifically, realistically and realistically, realizes real-time 3D ocean wave scene simulation, and increases the real-time and interaction of ocean waves to a certain extent.

Description

technical field [0001] The invention belongs to the field of three-dimensional visual simulation of ocean scenes, in particular to a three-dimensional ocean wave simulation optimization method for dynamic positioning ships operating at sea. Background technique [0002] Dynamically positioned ships have the advantages of strong adaptability, no limitation of water depth, accurate positioning, and convenient operation, so they occupy an important position in actual ocean engineering applications. Ocean waves are a very complex fluctuation phenomenon generated on the surface of the ocean due to the action of wind and current, which are closely related to our economic and social activities. Due to the constraints of the natural environment and complex and changeable factors, if we can simulate the three-dimensional wave scene of the dynamic positioning ship's offshore operation in real time and realistically, it will be of great significance for the application of marine engine...

Claims

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Application Information

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IPC IPC(8): G06T13/60
CPCG06T13/60
Inventor 吴德烽李忠坡林洪贵
Owner JIMEI UNIV
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