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Coupling simulation method for a small-scale beach section and a large-scale shoreline change

A simulation method, large-scale technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve problems such as long calculation time

Pending Publication Date: 2019-04-05
PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, to provide a numerical simulation method based on the coupling of small-scale shore beach profiles and large-scale shoreline changes in the sand transport process, and to realize the coupling of the dynamic process of estuary and coastal landform evolution. Describe and solve the matching problems of multi-temporal and spatial scales in the evolution and the long-term calculation time-consuming problems in long-period simulations, and significantly improve the practical application value of beach evolution simulations

Method used

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  • Coupling simulation method for a small-scale beach section and a large-scale shoreline change
  • Coupling simulation method for a small-scale beach section and a large-scale shoreline change
  • Coupling simulation method for a small-scale beach section and a large-scale shoreline change

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Embodiment Construction

[0115] In order to make the purpose, technical solutions and advantages of the present invention more clear and definite, the present invention is further described in detail through examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0116] figure 1 It is a flowchart of the method of the present invention. This patent roughly includes the following steps:

[0117] S1. Establish a wave-current coupling model that accurately and quantitatively describes plane near-shore dynamics;

[0118] S2. Establish a bottom rip current model that accurately and quantitatively describes the near-shore bottom rip current;

[0119] S3. Establish a small-scale shore-shoal profile evolution model;

[0120] S4. Using the long-period control function set to establish a large-scale shoreline change model;

[0121] S5. Using the Godunov finite volume method on unstructured grids to ...

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Abstract

The invention discloses a coupling numerical simulation method for small-scale beach section and large-scale shoreline changes. The coupling numerical simulation method comprises the following steps that S1, establishing a wave flow coupling model for accurately and quantitatively describing plane offshore power; S2, establishing a bottom offshore flow model for accurately and quantitatively describing the offshore bottom offshore flow; S3, establishing a small-scale beach profile evolution model; S4, establishing a large-scale shoreline change model by using the long-period control function set; And S5, solving the large-scale shoreline change model by adopting a Godunov type finite volume method on a non-structural grid, and obtaining a large-scale shoreline change value. According to the method, the expansion from the sediment transport volume on the small-scale beach to the transport volume on the large-scale shoreline landform is realized, the simulation of the large-scale shoreline change is completed, and the practical application value of the simulation of the beach evolution can be obviously improved.

Description

technical field [0001] The invention relates to a numerical simulation method for sandy and silty estuary coastline evolution, and belongs to the technical field of estuary coast sediment movement and shoreline evolution numerical simulation. Background technique [0002] Coastal areas are areas with rapid economic and social development in China, and have a pivotal strategic position in my country's economic construction. But at the same time, people's impact on coastal landforms is increasing day by day, especially the long-term impact is related to major issues such as sustainable utilization and protection of coastal resources, shipping, flood control and disaster reduction, and ecological environment protection. Due to the limitations of site conditions (floods, storm surges), observation instruments, and funds, it has become an important technical means to use mathematical models oriented to coastal dynamic geomorphic processes to predict the long-term recession and sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 王汉岗胡晓张杨聿杨芳李杰宋利祥杨志伟陈睿智谢华浪
Owner PEARL RIVER HYDRAULIC RES INST OF PEARL RIVER WATER RESOURCES COMMISSION
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