Unstructured grid nesting wave numerical simulation method

An unstructured grid, numerical simulation technology, used in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of further improvement of simulation results, high precision, and wave simulation complexity.

Inactive Publication Date: 2015-02-04
JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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Problems solved by technology

[0004] With the development of wave numerical simulation technology, compared with structured grid, unstructured grid has more advantages and has been widely used. So far, although unstructured grid simulation technology has made great achievements at home and abroad There are few successful cases, but due to the complexity and higher accuracy requirements of wave simulation in estuaries, coasts and offshore waters, the simulation results need to be further improved

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  • Unstructured grid nesting wave numerical simulation method
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  • Unstructured grid nesting wave numerical simulation method

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[0053] Attached below picture The present invention is further described. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0054] An unstructured grid nested wave numerical simulation method, combined with some typical methods in the past, includes the following steps:

[0055] 1) Establish a large-area unstructured grid wave mathematical model, and its governing equation is:

[0056] ∂ ∂ t N + ∂ ∂ x C x N + ∂ ∂ y C y N + ∂ ∂ σ C σ ...

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Abstract

The invention discloses an unstructured grid nesting wave numerical simulation method, which includes the following main steps: an unstructured grid is adopted to create a mathematical model of waves in a large area; an unstructured grid is adopted to create a mathematical model of waves in a shallow-water engineering sea area; according to computational domains of different sizes, the numerical simulation of the waves is carried out. The unstructured grid nesting wave numerical simulation method achieves the following advantages: on the basis of bringing the unstructured grid wave mathematical models into full play, by applying the grid nesting technology, the unstructured grid nesting wave numerical simulation method greatly reduces the number of the grids in the computational domains, and increases the speed of computation; by applying the grid nesting technology, the unstructured grid nesting wave numerical simulation method can deploy finer computational grids in order to adapt to complex terrains and irregular coast boundaries, so that the accuracy of computed results can be increased.

Description

technical field [0001] The invention relates to an unstructured grid nested wave numerical simulation method, which belongs to the technical field of wave field numerical simulation and prediction. Background technique [0002] In recent years, with the construction of coastal projects such as port channel projects, artificial islands, artificial beaches, reclamation, and wind power in my country, higher requirements have been put forward for the numerical simulation and prediction of waves in engineering sea areas. Establishing unstructured grid estuary, coastal and offshore engineering sea area wave mathematical models, and accurately forecasting engineering sea area wave elements are of great practical significance for optimizing engineering design schemes, saving engineering investment, and improving engineering safety. [0003] In order to more accurately simulate the wave propagation process in estuaries, coasts and offshore waters, the grid nesting method is often use...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 朱志夏齐庆辉
Owner JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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