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A Coding Method for Large-Scale Calculation of Massive Grids in Watersheds

A large-scale, grid technology, applied in the field of fluid mechanics and environmental simulation, to achieve the effect of avoiding repetition

Active Publication Date: 2019-08-20
WUHAN UNIV
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  • Application Information

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Problems solved by technology

[0003] Aiming at the problem of large-scale and high-precision massive grid drawing in complex watersheds, this invention proposes a coding method for large-scale calculation of massive grids in a watershed. Based on the existing mature two-dimensional regular grid drawing and coding methods, the river network is segmented Processing, drawing two-dimensional grids separately, forming high-precision one-dimensional grids in the area through reorganization and one-dimensional technology, and realizing the drawing of massive grids at one time

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  • A Coding Method for Large-Scale Calculation of Massive Grids in Watersheds
  • A Coding Method for Large-Scale Calculation of Massive Grids in Watersheds
  • A Coding Method for Large-Scale Calculation of Massive Grids in Watersheds

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] A coding method for large-scale calculation of massive grids in a watershed, including:

[0035] Step 1. Identify the relationship between the rivers within the research area, divide the main branches of the river, and process and number the rivers in sections according to the length of the river. This step is specifically as follows:

[0036] Step 1-1, identification of watershed water system structure and boundary: apply the DEM data of the watershed, extract the watershed water system, obtain the watershed water system structure layer River, and identify the watershed boundary range layer River_bd in the water system structure layer River;

[0037] Step 1-2, Segmentation coding of water system and river course: find out the river course to be calculated in the river system boundary layer River_bd, and divide the river course...

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Abstract

The invention discloses a massive-grid coding method of large-scale calculation of a basin. large-scale complex river channel mainstreams / tributaries and river channel courses of the basin are distinguished through grid coding, then unified numbering is carried out according to spatial topological relationships of grids, and realization of completing drawing of the massive grids at once in cases where existing grid drawing technology methods are limited by computer hardware memory is facilitated. According to the method, simple and highly efficient coding of the large-scale massive grids is realized, and technical support is provided for large-scale massive-grid drawing based on regular grids.

Description

technical field [0001] The invention belongs to the field of fluid mechanics and environmental simulation, and relates to a coding method for large-scale calculation of massive grids in a watershed, in particular to a coding method for massive grids based on large-scale environmental simulation or fluid calculation in a watershed to support large-scale Mesh rendering of complex river networks at scale. Background technique [0002] In the process of large-scale calculation, the river surface data is often discretized by using grid subdivision technology, and the numerical calculation is performed with discrete grid points as continuous control points. In order to improve the efficiency of river network search, operations such as calculation of river network topological relationship and partial river network search are often involved, and the river network needs to be coded. There are few existing river network coding systems, and the structure is too simple, so the relation...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/29
Inventor 张万顺万晶彭虹王永桂
Owner WUHAN UNIV
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