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River flow measurement method based on vertical flow velocity distribution measured by horizontal adcp

A flow velocity distribution and flow measurement technology, which is used in the measurement of flow/mass flow, liquid/fluid solids measurement, and measurement devices, etc. It can solve the problems of affecting the accuracy control and popularization of horizontal ADCP, and the difficulty in selecting the representative line of lateral flow velocity. Achieve the effect of improving the accuracy of flow measurement and improving the scope of application

Active Publication Date: 2021-12-24
BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the lateral velocity of the horizontal ADCP is affected by factors such as the amplitude of the water level, the position of the representative line, and the size of the horizontal measured interval.

Method used

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  • River flow measurement method based on vertical flow velocity distribution measured by horizontal adcp
  • River flow measurement method based on vertical flow velocity distribution measured by horizontal adcp
  • River flow measurement method based on vertical flow velocity distribution measured by horizontal adcp

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0036] (1) Layout horizontal ADCP horizontal horizontal survey line

[0037] According to the characteristics of the river and the measurement results of the previous current velocity meter or the ADCP flow, analyze all vertical flow velocity distribution types in the test section, including but not limited to logarithmic flow velocity distribution, exponential flow velocity distribution, and parabolic flow velocity distribution. The horizontal ADCP is arranged on the horizontal horizontal measuring line not less than the parameter n of the vertical flow velocity distribution, and all the horizontal measuring lines are located on the flow measuring section.

[0038] Taking the logarithmic velocity distribution as an example, the vertical velocity distribution is shown in the following formula

[0039]

[0040] In the formula: v ij is the flow velocity at the measuring point located on the i-th horizontal measuring line and the j-th vertical velocity measuring vertical line...

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PUM

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Abstract

The invention discloses a river flow measurement method based on horizontal ADCP measuring vertical flow velocity distribution. The river flow measurement method comprises the following steps: 1) Horizontal ADCP transverse horizontal measuring line layout; 2) Vertical velocity measuring vertical line measuring point flow velocity 3) Fitting parameters of velocity distribution in vertical velocity measurement vertical line; 4) Calculation of flow rate at flow measurement section. Compared with the prior art, the present invention has the following beneficial effects: the method can convert the level representative correlation method into a mature river flow measurement method by moving the level ADCP, and improves the flow measurement accuracy; the method can avoid partial flow level ADCP represents the line selection problem, which improves the scope of application of the horizontal ADCP measurement method; this method can guide the frequency selection of the horizontal ADCP.

Description

technical field [0001] The invention discloses a method for measuring the flow of a river, in particular to a method for measuring the flow of a river based on horizontal ADCP measuring vertical flow velocity distribution, and belongs to the technical field of hydrological test applications. Background technique [0002] ADCP (Acoustic Doppler Current Profilers), the Chinese name is Acoustic Doppler Current Profilers. The so-called horizontal ADCP is to install the ADCP horizontally and horizontally. By measuring the flow velocity distribution in the horizontal and horizontal direction of the river, the horizontal ADCP is used to measure the flow velocity and current velocity meter or to navigate The relative relationship between the measured and off-average velocity of the ADCP is used to calculate the river discharge. [0003] However, the lateral velocity of the horizontal ADCP is affected by factors such as the amplitude of the water level, the position of the representa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/66
CPCG01F1/663
Inventor 熊明张国学王志飞邹珊
Owner BUREAU OF HYDROLOGY CHANGJIANG WATER RESOURCES COMMISSION
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