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Water level fluctuation calculation method

A calculation method and technology for water level fluctuation, which can be used in calculation, computer-aided design, design optimization/simulation, etc., and can solve problems such as insufficient numerical simulation methods.

Pending Publication Date: 2021-09-10
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Claims
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Problems solved by technology

[0004] In view of the relatively obvious water level fluctuations in the current large-flow water delivery conditions, and the defects and problems that the current numerical simulation methods are not perfect enough, the present invention provides a water level fluctuation calculation method based on Flow-3D numerical analysis software

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Embodiment 1

[0056] Embodiment 1: In order to better describe the technical solution of the present invention in detail, this embodiment takes the Baihe inverted siphon project as an example for detailed description.

[0057] The Baihe Inverted Siphon Project has a total length of 1337m and is divided into 77 sections (section length is about 14.8m). It is a concrete pipe with two holes and one connection with a total of 4 holes. The net size of a single hole pipe is 6.7×6.7m.

[0058] The Baihe Inverted Siphon Project crosses the bottom of the Baihe River. The project uses the pressure of the water flow in the channel to enter the river bottom from the entrance and then exit from the exit. This not only ensures the normal water delivery, irrigation, and flood discharge requirements of the Baihe River, but also ensures the water quality. Require. The design discharge of Baihe inverted siphon project is 330m 3 / s, increase the flow rate to 400m 3 / s, the designed retreat flow of the retre...

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Abstract

The invention belongs to the technical field of water conservancy projects, and particularly relates to a water level fluctuation calculation method. According to the method, a method of combining computational fluid dynamics and field actual measurement data inversion is adopted, hydraulic characteristics of typical buildings in a certain water conservancy project under the condition of large-flow water delivery are researched, and theoretical analysis and mechanism research can be carried out on the water body flow state change and water level fluctuation process of the hydraulic buildings, the obtained numerical simulation calculation result is basically consistent with actually measured data, technical support and theoretical basis are provided for safe dispatching operation of large-flow water delivery of midline projects in water conservancy projects, certain guidance is provided for safe dispatching of large-flow water delivery, and engineering benefits are fully exerted on the premise that safe operation of the projects is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, relates to the field of calculating water level fluctuations of hydraulic structures, in particular to a method for calculating water level fluctuations. Background technique [0002] A certain water conservancy project is a strategic project of my country's water resources allocation, which mainly solves the problem of water shortage in some areas of our country. The first phase of the middle line of the project has been running smoothly since the whole line was opened to water in 2014, and it has been in safe operation for 5 years. At the entrance and exit of the building, there are obvious water level fluctuations, local eddies, backflow, turbulence or water scour; some typical buildings have high water levels in front of the gates, which may affect or increase local water head losses, and cause engineering safety problems. Hidden dangers will affect the safe scheduling ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/28G06F30/13G06F111/10G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F30/13G06F2111/10G06F2113/08G06F2119/14
Inventor 许新勇王松涛许晨笑梁金昶
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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