Special component for calculating tidal bore flow velocity vertical distribution

A technology of vertical distribution and special components, which is used in fluid velocity measurement, complex mathematical operations, and measurement of the depth of open water sources.

Active Publication Date: 2019-10-29
ZHEJIANG INST OF HYDRAULICS & ESTUARY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above method measures the vertical distribution of inrush current velocity, it faces difficulties such as the installation and positioning of inst

Method used

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  • Special component for calculating tidal bore flow velocity vertical distribution
  • Special component for calculating tidal bore flow velocity vertical distribution
  • Special component for calculating tidal bore flow velocity vertical distribution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] A dedicated component for calculating the vertical distribution of tidal current velocity, including at least one computer, a series of hydrological acquisition devices or a numerical model of tidal surge, the computer is connected to the hydrological acquisition device or receives tide calculation data, and the computer can analyze the hydrological data collected by the hydrological acquisition device. Data or calculation data received such as tidal level and pre-tidal current velocity are processed through the vertical distribution calculation model of inrush current velocity and the obtained results are output. Its process is as follows Figure 1 ~ Figure 2 .

[0043] The hydrological acquisition devices include: water level meter, three-dimensional acoustic Doppler velocity meter (ADV), and echo sounder.

[0044] Hydrological data or tide calculation data include: pre-tidal water depth, pre-tidal current velocity, tidal height, and tidal current velocity at a certa...

Embodiment 2

[0046] Embodiment 2: The following is a further description based on the measured data of tidal surge.

[0047] Through the on-site observation of the self-recording water level meter and the three-dimensional acoustic Doppler current meter (ADV), the pre-tidal water depth h = 1.8m, the pre-tidal current velocity v = -1.47m / s, and the tidal height H = 2.6 m, the distance from the bottom of the river is Z 1 = Inrush current velocity V at 3.4m 1 = 4.15m / s. The above data is transferred to a computer for processing.

[0048] First, using the above-mentioned pre-tidal water depth, tidal height, and pre-tidal flow velocity, Fr=2.02 is calculated by the program stored in the computer. Since Fr ≥ 1.7, it is judged that the tidal surge is a vortex tidal surge.

[0049] Then, from the known distance Z from the bottom of the river 1 = 3.4m and the pre-tidal water depth and tidal height, the program stored in the computer calculates its relative position Z' 1 = 0.77. Due to Z' 1 ...

Embodiment 3

[0052] The computer program control steps are as follows:

[0053] a. Read hydrological data;

[0054] b. Judging the type of tidal surge;

[0055] c. Calculate the vertical distribution of wave tidal surge or swirling tidal current velocity;

[0056] d. Output data files.

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Abstract

The invention discloses a special component for calculating the tidal bore flow velocity vertical distribution. The special component comprises at least one computer, and a series of hydrological acquisition devices or tidal bore numerical models, wherein the computer is connected with the hydrological acquisition devices or receives a tidal bore calculated value and can calculate the hydrological data acquired by the hydrological acquisition devices or the received tidal level or tide-ahead flow velocity data, and a tidal bore flow velocity vertical distribution calculation model processes the data and outputs an obtained result. The special component can display the vertical distribution of the tidal bore flow velocity at a certain moment in the form of a graph, well reflects the distribution characteristics of the tidal bore flow velocity in the vertical line, has a low calculation error, and can be used as a tool for calculating the tidal bore flow velocity values at various positions in the vertical line in engineering design or tidal bore research.

Description

technical field [0001] The invention relates to the field of fluid mechanics, in particular to a calculation method and special components for the vertical distribution of gushing current velocity. Background technique [0002] There are tidal surges in many strong tidal estuaries in the world, such as the Amazon River in Brazil, the Severn River in the United Kingdom, and the Hooghly River in India. There are two typical forms of tidal surge: one is of low intensity, and the tidal surge is a wave train composed of a series of waves advancing in parallel, called "wave tidal surge"; the other is when the intensity is large, free The surface breaks up, creating a forward-propelling roll of water called a "tide tide." The tidal surge of the Qiantang River is the most typical among all estuaries, and it is a very distinctive tourist resource and natural wonder. After the Qiantang River tidal surge was formed, the characteristics of the water flow changed greatly. Before and a...

Claims

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Application Information

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IPC IPC(8): G01C13/00G01P5/24G06F17/10
CPCG01C13/002G01C13/008G01P5/241G06F17/10Y02A90/30
Inventor 曾剑吴修广李最森周瑜佳
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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