A method and system for coupling a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model
A hydrodynamic and model technology, applied in instrumentation, design optimization/simulation, electrical digital data processing, etc., can solve problems such as low coupling accuracy and large calculation errors of unknown particle distribution
Active Publication Date: 2020-08-11
BEIJING NORMAL UNIVERSITY
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[0003] The purpose of the present invention is to provide a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model coupling method and system to solve the problems of large calculation errors and low coupling accuracy of unknown particle distribution in the prior art
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[0038]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] The object of the present invention is to provide a method and system for coupling a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model, which can improve the coupling efficiency of the one-dimensional hydrodynamic model and the two-dimensional hydrodynamic model.
[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in det...
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The invention discloses a one-dimensional hydrodynamic model and two-dimensional hydrodynamic model coupling method and system. The coupling method includes: acquiring one-dimensional known particle distribution quantity and one-dimensional known particle flow velocity in flowing from a one-dimensional hydrodynamic model to a two-dimensional hydrodynamic model; acquiring two-dimensional known particle distribution quantity and two-dimensional known particle flow velocity in flowing from the two-dimensional hydrodynamic model to the one-dimensional hydrodynamic model; determining an average value of one-dimensional unit discharge of a last row of grids of the one-dimensional hydrodynamic model and a two-dimensional unit discharge of a first row of grids of the two-dimensional hydrodynamic model according to known quantity; adopting a lattice Boltzmann method for determining one-dimensional unknown particle distribution quantity and two-dimensional unknown particle distribution quantity.By the coupling method and system, coupling efficiency of hydrodynamic model in different dimensionality can be improved.
Description
technical field [0001] The invention relates to the coupling field of a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model, in particular to a coupling method and system for a one-dimensional hydrodynamic model and a two-dimensional hydrodynamic model. Background technique [0002] In the existing technology, in order to establish a one-dimensional and two-dimensional hydrodynamic coupling model to better simulate the topography of the water area, the operations adopted include analyzing the topography and hydrological characteristics of typical research areas such as river-lake systems and floods; Clarify the necessary conditions for modeling of river flow, water level, bank slope shape, etc. in the study area; establish data databases such as hydrology, topography, remote sensing, and environment. Among them, the concept of cross-sectional average flow velocity is introduced for the river network or river section, and the water flow is regarded as ...
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IPC IPC(8): G06F30/28G06F119/14
CPCG06F30/20
Inventor 刘海飞王洪达丁禹
Owner BEIJING NORMAL UNIVERSITY