Dedicated components for vertical distribution of inrush velocity

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: 2022-08-09
ZHEJIANG INST OF HYDRAULICS & ESTUARY
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  • Summary
  • 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 instruments and equipment, the supplement of blind area data, and the processing of unreasonable data, which need to be continuously overcome in practical applications.

Method used

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  • Dedicated components for vertical distribution of inrush velocity
  • Dedicated components for vertical distribution of inrush velocity
  • Dedicated components for vertical distribution of inrush velocity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0043] The hydrological acquisition device includes: a water level meter, a three-dimensional acoustic Doppler flowmeter (ADV), and an echo sounder.

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

Embodiment 2

[0046] Embodiment 2: The following further description is given with the measured data of tide surge.

[0047] The pre-tidal water depth h=1.8m, the pre-tidal flow velocity v=-1.47m / s, and the tidal height H=2.6 of a tidal tidal wave were obtained through on-site observation by the self-recording water level meter and the three-dimensional acoustic Doppler velocity meter (ADV). m, the distance from the river bottom is Z 1 = Inrush velocity V at 3.4m 1 =4.15m / s. Transfer the above data 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 a computer-stored program. Since Fr≥1.7, the tide is judged to be a whirlpool tide.

[0049] Then, from the known distance Z from the river bottom 1 = 3.4m and the pre-tidal water depth and tidal height, the relative position Z' is calculated by the program stored in the computer 1 =0.77. due to Z' 1 >0.6, the vertical maximum f...

Embodiment 3

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

[0053] a. Read hydrological data;

[0054] b. Determine the type of tide surge;

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

[0056] d. Output data files.

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Abstract

The invention discloses a special component for calculating the vertical distribution of tidal current velocity, which is provided with at least one computer, a series of hydrological acquisition devices or tidal inrush numerical models, the computer is connected to the hydrological acquisition device or receives the calculated value of the influx, and the computer can collect the hydrological data. The hydrological data collected by the device or the received calculation data such as tidal level and pre-tidal flow velocity are processed through the vertical distribution calculation model of inrush flow velocity and the obtained results are output. The invention can display the vertical distribution of the downsurge velocity at a certain moment in the form of graphics, which can better reflect the distribution characteristics of the swell velocity on the vertical line, and the calculation error is small, and can be used as engineering design or tidal surge. A powerful tool for calculating inrush velocity values ​​at various locations on the vertical line in research.

Description

technical field [0001] The invention relates to the field of fluid mechanics, in particular to a calculation method and a special component for the vertical distribution of swell flow 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 Hughari River in India. There are two typical forms of tidal wave: one is the smaller intensity, the tidal wave is a wave train composed of a series of parallel waves advancing forward, called "wave tidal wave"; The surface shatters, forming a forward-moving roll of water known as a "swirl tide". The tidal surge of Qiantang River is the most typical among all estuaries, and it is a unique tourism resource and natural wonder. After the formation of the Qiantang River tide, the characteristics of the water flow have changed greatly. Before and after the arrival of the tide, the water level suddenly rose b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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