Unlock instant, AI-driven research and patent intelligence for your innovation.
A real-time hydrodynamic calculation method for open channel water diversion projects based on time-space step size adaptive technology
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A hydrodynamic and adaptive technology, applied in design optimization/simulation, special data processing applications, instruments, etc., can solve the problems of low calculation rate, difficult to determine Courant value, non-convergence, etc., to improve efficiency and reduce step size Trial and error times, easy operation effect
Active Publication Date: 2022-03-25
CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
View PDF2 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
[0004] However, this method has certain disadvantages. On the one hand, the Courant value is not easy to determine. On the other hand, due to the uncertainty of the spatial grid step size and time grid step size, divergence and non-convergence are likely to occur during the calculation process, which makes the calculation It cannot be completed, and in the case of divergence, the time step needs to be reduced. The smaller the time step, the lower the calculation rate, which may not meet the real-time requirements of the system
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 more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0063] Such as figure 1 As shown, in the present embodiment, a kind of open channel water diversion project hydrodynamic real-time calculation method based on time-space step size self-adaptive technology is provided, comprising the following steps,
[0064] S1. Construct a hydrodynamic simulation model based on Saint-Venant's equations;
[0065] S2. Based on the constructed hydrodynamic simulation model, set the internal and external boundary conditions of the channel,
[0066] S3. Based on the constructed hydrodynamic simulation model, set different time steps, calculate and obtain the space step adapted to the time step, and determine the variation law of the space step with the time step;
[0067] S4. Based on the constructed hydrodynamic simulation model, set different time steps, calculate and obtain the calculation running time corresponding to different time steps, and determine the change law of calculation running time with time step and space step.
[0068] In thi...
Embodiment 2
[0116] In this embodiment, taking the section from the ancient canal control sluice to the North Juma control sluice (referred to as "Jingshi section") of the water diversion project as an example, according to the method described in the present invention, the construction and calculation of the hydrodynamic real-time calculation model are carried out, and the analysis Calculate the relationship between time step size and computational efficiency.
[0117] The total length of the project is 1432 kilometers, of which the total length of the Jingshi section is 227km. The buildings along the line include 14 control gates, 13 water diversions, 12 retreat gates, 17 sections of inverted siphons, 108 sections of gradient sections, and 130 sections of channels. The channel length information As shown in Table 1. Complicated engineering conditions lead to a long time for hydrodynamic calculations, and it is difficult to meet the needs of real-time hydrodynamic calculations. The presen...
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 discloses a real-time hydrodynamic calculation method for an open channel water diversion project based on a space-time step size self-adaptive technology, including S1, constructing a hydrodynamic simulation model based on Saint-Venant equations; Set the internal and external boundary conditions of the channel, S3, based on the constructed hydrodynamic simulation model, set different time steps, calculate and obtain the space step suitable for the time step, and determine the change law of the space step with the time step; S4 , Based on the constructed hydrodynamic simulation model, set different time steps, calculate and obtain the calculation running time corresponding to different time steps, and determine the change law of the calculation running time with the time step and space step. The advantage is that this method can obtain the relationship between the calculation time step and the calculation efficiency on the basis of the self-adaptive relationship of the space-time step, and effectively improve the efficiency of the real-time calculation of the hydraulic power of the open channel water diversion project.
Description
technical field [0001] The invention relates to the technical field of one-dimensional hydrodynamic real-time calculation, in particular to a method for real-time hydrodynamic calculation of an open channel water diversion project based on time-space step size adaptive technology. Background technique [0002] With the development of society and economy, people's demand for water resources is increasing, and water diversion projects have become an important means to solve the problem of social water resource shortage, optimize the allocation pattern of water resources, and improve regional water supply security capabilities. Water transfer methods include two categories: non-pressurized open channel water transfer and pressurized pipeline water transfer. Among them, the open channel water transfer has the advantages of small project investment, low operating cost, large water transfer flow, and convenient construction, so it has been widely used in water transfer projects at...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/13G06F30/20G06F119/14
CPCG06F30/13G06F30/20G06F2119/14
Inventor 张召雷晓辉李月强查桓刘玉敏陈广明宋有权朱杰景象王艺霖
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Login to View More 
Login to View More