An analysis method of internal isolation waves under the background streaming field

Abstract

The present invention provides a method for analyzing the force characteristics of internal solitary waves considering the background flow field, which includes the following steps: Step 1: using a three-dimensional ocean numerical model to numerically simulate the circulation in the South China Sea; Step 2: establishing an internal wave numerical tank; 3: Determine the effect of internal waves on ocean structure through internal wave numerical tank and ocean structure network models considering background processes. The invention solves the problem that the internal wave generation method cannot consider the background flow field. For the first time, it combines the internal wave ocean model, the internal wave computational fluid dynamics method and the internal wave force theory method to form a complete consideration of the background flow field. Calculation system of internal wave generation method and force measurement method. This method can make the research on the effect of internal waves on structures closer to the actual situation, and can play a guiding role in the safe load calculation and structural design of offshore structures.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method for analyzing force characteristics of internal solitary waves in consideration of a background flow field. Background technique [0002] With the continuous development of offshore drilling and the continuous exploitation of offshore oil fields, people have turned their attention to the deep sea. my country's South China Sea has rich oil and gas reserves and has become a strategic resource base for my country's offshore oil and gas production and development. However, complex seawater stratification phenomena also exist in the South China Sea, and internal wave activities are very frequent. [0003] Ocean internal waves have a huge impact and threat on marine transportation and offshore engineering structures (including offshore platforms, marine riser systems, submarine pipeline systems, mooring and cables, oil storage vessels, etc.). On April 10, 1963, the ...

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Problems solved by technology

[0010] As mentioned above, among the numerical studies of internal waves, one is large-scale numerical model research, which is mainly used to simulate the generation, propagation and dissipation process of internal waves in the actual ocean environment, and the results are closer to the actual conditions. Internal wave environment (considering factors such as the background flow field), but the grid density is often large, and the effect of internal waves on marine structures cannot be calculated

The other is the computational fluid dynamics internal wave tank at a small scale, which is mainly used to calculate the characteristics of the internal wave and the interaction between the internal wave and the structure under the small-scale condition. Compared with the large-scale numerical model, it is more precise, but small Theoretical methods are often used to produce internal waves in large-scale internal wave tanks. Both the waveform and the velocity field are quite different from the actual situation, and it is impossible to calculate the force of the structure in the real internal wave environment.

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