A one-dimensional river network generalization and high performance one-two-dimensional coupled flood analysis method is presented

A technology of river network generalization and two-dimensional coupling, applied in climate change adaptation, design optimization/simulation, special data processing applications, etc.

Inactive Publication Date: 2019-01-11
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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Problems solved by technology

[0003] Although methods such as flood analysis methods based on one-dimensional coupling are disclosed in the prior

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  • A one-dimensional river network generalization and high performance one-two-dimensional coupled flood analysis method is presented
  • A one-dimensional river network generalization and high performance one-two-dimensional coupled flood analysis method is presented
  • A one-dimensional river network generalization and high performance one-two-dimensional coupled flood analysis method is presented

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Embodiment Construction

[0050] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0051] The flood analysis method of one-dimensional river network generalization and high-performance one-dimensional coupling of the present invention comprises the following steps:

[0052] Step S1: Establish a one-dimensional river network model,

[0053] The one-dimensional water flow movement relationship of the channel is calculated by Saint-Venant's equations:

[0054]

[0055] In the formula: q is the side inflow, Q, A, B, Z are the cross-sectional flow of the river, cross-flow area, river width and water level, V X ...

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Abstract

The invention provides a one-dimensional river network generalization and high-performance one-two-dimensional coupled flood analysis method, comprising the steps of establishing a one-dimensional river network model, a confluence type unit model, a whole basin river network coupling model and a two-dimensional shallow water model. Zero-dimensional storage and nodal equations are computed, and control condition model elements are selected. The control effects of weir, sluice and pump on flow are analyzed by using control condition model elements. When the two-dimensional shallow water model isnumerically discretized, the position of variables in the computational grid is determined, and the flux, bottom slope source and friction drag source in the two-dimensional shallow water model are calculated. A spatial second-order accuracy scheme is constructed and a variety of boundary conditions are set. According to the data, a set of flood control control system is formed, and the numericalsimulation of the operation mode of engineering control is carried out to achieve the effective simulation and forecast of flood.

Description

technical field [0001] The invention relates to the technical field of hydrodynamic analysis, in particular to a flood analysis method of one-dimensional river network generalization and high-performance one-dimensional coupling. Background technique [0002] As an important tool for flood risk map compilation, flood analysis software has always been dominated by foreign commercial software. Our country is a big water conservancy country, and has achieved world-renowned achievements in many aspects of the water conservancy field, but we have not formed a domestic flood analysis software brand of our own. Mountain torrents and urban floods are still disasters that pose a huge threat to people's lives and property. If it involves its own flood analysis methods, it is a technical problem that needs to be solved to achieve reliable analysis of floods. [0003] Although methods such as flood analysis methods based on one-dimensional coupling are disclosed in the prior art, a flo...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20Y02A10/40
Inventor 马建明张大伟张洪斌喻海军穆杰吴滨滨王船海曾贤敏曹大岭聂文礼姚辉
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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