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Grid drawing and central bar grid processing method for mainstream and tributary intersections of complex river network

A technology of junction and junction, which is used in electrical digital data processing, special data processing applications, instruments, etc., to achieve the effect of improving computing efficiency, reducing hardware consumption, and solving the large amount of model calculation.

Active Publication Date: 2018-05-25
WUHAN UNIV
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Problems solved by technology

[0005] Aiming at the grid drawing problems existing in the intersection of main and tributary streams and Jiangxinzhou in the complex river network, the present invention proposes a grid drawing of the intersection of main and tributary in complex river network and the grid processing method of Jiangxinzhou, based on the existing mature two-dimensional grid The drawing tool, through the judgment of the intersection type of main and branch streams and the topography of Jiangxinzhou, selects the best grid drawing and processing plan

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  • Grid drawing and central bar grid processing method for mainstream and tributary intersections of complex river network
  • Grid drawing and central bar grid processing method for mainstream and tributary intersections of complex river network
  • Grid drawing and central bar grid processing method for mainstream and tributary intersections of complex river network

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Embodiment Construction

[0057] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0058] (1) The grid drawing of the main and tributary intersections of the complex river network, the drawing process is as follows figure 1 shown

[0059] ① Basin water system structure and boundary identification: Based on the existing DEM (digital elevation model) data of the watershed, the water system in the watershed is extracted, and the water system structure layer of the watershed is obtained. figure 2 Shown is the extraction effect of the elevation point of the water system boundary of the main large trunk and tributary streams in the Three Gorges Reservoir area.

[0060] ②Spline drawing of the main stream of the river: use the existing regular grid drawing tool, according to the boundary of the main stream, draw the spline line of the main stream boundary based on the principle that the spline should be as smooth as possible and conform to the real river,...

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Abstract

The invention discloses a grid drawing and central bar grid processing method for mainstream and tributary intersections of a complex river network. By classifying modes of mainstream and tributary intersections of the complex river network, grid processing method types at the position of the intersections are determined according to the mainstream and tributary intersection angles on the basis offully meeting the riverway trend, and thus a regular grid that meets the calculation conditions is generated; through the drawing of a grid line, the complex terrain of a central bar is processed, sothat the central bar grid is not generated, the calculation divergence problem that may be caused by a large central bar with a complex terrain in the actual calculation process is solved, at the same time the calculation efficiency is improved, and the hardware consumption is reduced. According to the grid drawing and central bar grid processing method, the processing of grids of the complex river network mainstream and tributary intersections and central bar grids is achieved based on an existing regular grid drawing tool, and powerful support is provided for value calculation of the regular grid.

Description

technical field [0001] The invention belongs to the field of fluid mechanics and environmental simulation, and relates to a method for drawing a complex river network main and tributary intersection grid and Jiangxinzhou grid processing method, in particular to a complex river network main and tributary intersection based on an existing regular grid generation tool The grid drawing technology and the processing method of the grid at Jiangxinzhou can effectively solve the problems of irregular grid generation and deformation at the intersection of river networks and water systems, and the calculation divergence of the numerical simulation calculation process at Jiangxinzhou. Background technique [0002] With the rapid development and popularization of computer technology, the finite element method has rapidly expanded from the strength analysis and calculation of engineering structures to almost all scientific and technological fields, and has become a widely used, practical ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/23
Inventor 张万顺陈肖敏王永桂彭虹
Owner WUHAN UNIV
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