A one-two-dimensional hydrodynamic coupling method based on spatial topology

Abstract

The invention provides a one-two-dimensional hydrodynamic coupling method based on a spatial topology. The method comprises the following steps: constructing a one-dimensional hydrodynamic model comprising a one-dimensional river network model for simulating the flow of a river network and a water-crossing structure, and a one-dimensional pipe network model for simulating the flow of a city pipe network; constructing a two-dimensional hydrodynamic model used for meshing the region within the compilation range and control line to be analyzed, interpolating the mesh according to the topography of the region, and assigning the mesh attributes; performing surface-to-surface two-dimensional model coupling for a river course and a surface according to the one-dimensional river network model andthe two-dimensional hydrodynamic model; according to the one-dimensional pipe network model and the two-dimensional hydrodynamic model, performing one-two-dimensional model coupling for the urban surface and underground. The invention provides a perfect coupling mode, which is adapted to different flood coupling calculation requirements. Flexible one-two-dimensional coupled generalization model can well solve the generalization of streams and streets flood discharge.

Description

technical field [0001] The invention relates to the technical field of hydrodynamic analysis, in particular to a one-dimensional and two-dimensional hydrodynamic coupling method based on space topology. 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] Before analyzing the flood, how to deal with the river network, shallow water, urban pipe network and other models, as well as one-dimensional cou...

AI Technical Summary

Problems solved by technology

my 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

Images