One-dimensional river channel hydraulic structure overflowing simulation method and system
A structure and hydraulic technology, applied in CAD numerical modeling, instrument, geometric CAD, etc., can solve the problems of less overcurrent simulation technology and difficult overcurrent simulation, and achieve the effect of saving calculation cost
Inactive Publication Date: 2022-08-09
浙江贵仁信息科技股份有限公司
View PDF6 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] At present, there are few techniques for simulating the flow of hydraulic structures based on the finite volume method, and how to simulate the flow of structures in the new Godunov format is a major difficulty
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0099] In order to better explain the present invention and facilitate understanding, the present invention will be described in detail below with reference to the accompanying drawings and through specific embodiments.
[0100] For better understanding of the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be more clearly and thoroughly understood, and will fully convey the scope of the present invention to those skilled in the art.
[0101] The central format finite volume method is used for the river flood evolution simulation. The river channel is discretely divided int...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a one-dimensional river channel hydraulic structure overflowing simulation method and system, and the method comprises the steps: S1, determining the position of a river channel section according to the position of a hydraulic structure in a river channel, and obtaining a control unit of the river channel; s2, according to the initialization information of the one-dimensional river network mathematical model and the water level duration curve and the flow duration curve of the outer boundary of the river channel, the initial numerical flux of a general interface of each control unit of the river channel is obtained; s3, according to the initial hydraulic structure overflow mode, the initialization information of the one-dimensional river network mathematical model and the initial hydraulic structure interface overflow area, obtaining the initial numerical flux of the structure interface of each control unit of the river channel; and S4, according to the water level duration curve and the flow duration curve of the outer boundary of the river channel and / or the source item added by the user, the initial numerical flux of the general interface of each control unit of the river channel and the initial numerical flux of the structure interface of each control unit of the river channel, acquiring a fluid variable value of the center of each control unit at a preset target moment.
Description
technical field [0001] The invention relates to the technical field of simulating the motion state of river water flow, in particular to a one-dimensional flow simulation method and system of hydraulic structures in a river course. Background technique [0002] Since the basic equation (Saint-Venant equation) describing the one-dimensional non-constant flow motion of the river channel was put forward in the 1870s, many experts and scholars have used different numerical calculation formats to solve the equation in order to study the channel cross-section flow (or Velocity) and water level changes. The finite difference method originated in the 1940s and 1950s. After continuous improvement and optimization by experts and scholars, it has become the mainstream numerical format for one-dimensional river flood evolution simulation (such as the common Preissmann format). This kind of format often needs to add virtual sections before and after the structure when dealing with struc...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/13G06F30/20G06F111/10G06F113/08
CPCG06F30/13G06F30/20G06F2113/08G06F2111/10Y02A10/40
Inventor 罗源桂发二万鹏李容叶群
Owner 浙江贵仁信息科技股份有限公司