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PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device and measuring method

A technology of concentration measurement and liquid, applied in the field of flow field and concentration measurement device of mixed fluid, can solve problems such as no device and method.

Inactive Publication Date: 2015-01-28
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are relatively few reports on the use of PIV system combined with LIF technology to measure concentration in China.
[0006] At present, there are no related reports on devices and methods based on PIV technology that can measure both flow field and concentration.

Method used

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  • PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device and measuring method
  • PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device and measuring method
  • PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device and measuring method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A flow field and concentration measurement device based on PIV mixed liquid, including main water tank 1, experiment box body 2, buffer tank 3, water storage tank 4 and PIV system 5; said flow field and concentration measurement based on PIV mixed liquid The schematic diagram of the device is shown in figure 1 shown.

[0053] Among them, the main water tank 1 is divided into A zone tank and B zone tank by a partition; the A zone tank is connected to the first water pump 101, the mixing pipeline valve 102, the first flow meter 103, and the buffer tank 3 in sequence through pipelines and the experimental box 2; the box in area B is connected to the second water pump 104, the main pipeline valve 105, the second flow meter 106 and the experimental box 2 in turn through pipelines;

[0054] The experimental box 2 is connected to the water storage tank 4 through pipelines;

[0055] The water outlet pipeline of the water storage tank 4 is divided into two paths, namely a circ...

Embodiment 2

[0067] The flow field of the mixed liquid based on PIV and the concentration measuring device of the present invention are used to measure the flow field of the mixed liquid.

[0068] The flow field and concentration measuring device of the mixed liquid based on PIV are as described in Example 1, and the specific equipment models and parameters are as follows:

[0069] The first water pump 101 is a centrifugal pump, the model is IS50-32-200B, the head is 37.5 meters, and the flow rate is 10.8m 3 / h; the second water pump 104 is a centrifugal pump, the model is ISW80-200A, the head is 44 meters, and the flow rate is 47m 3 / h; the third water pump 403 is a centrifugal pump, the model is IS80-65-125, the head is 20 meters, and the flow rate is 50m 3 / h; the first flowmeter 103 is a rotameter with a range of 20m 3 / h; the model of the second flowmeter 103 is LDG-105-050, and the range is 47m 3 / h; the pipe diameter of the pipeline from the box in area A to the experimental box ...

Embodiment 3

[0079] The flow field and concentration measuring device based on PIV of the present invention is used to measure the concentration law after mixing 0.3% pulp and 1% pulp.

[0080] The flow field and concentration measuring device of the mixed liquid based on PIV are as described in Example 1, and the specific equipment models and parameters are as follows:

[0081] The first water pump 101 is a centrifugal pump, the model is IS50-32-200B, the head is 37.5 meters, and the flow rate is 10.8m 3 / h; the second water pump 104 is a centrifugal pump, the model is ISW80-200A, the head is 44 meters, and the flow rate is 47m 3 / h; the third water pump 403 is a centrifugal pump, the model is IS80-65-125, the head is 20 meters, and the flow rate is 50m 3 / h; the first flowmeter 103 is a rotameter with a range of 20m 3 / h; the model of the second flowmeter 103 is LDG-105-050, and the range is 47m 3 / h; the pipe diameter of the pipeline from the box in area A to the experimental box 2 is...

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Abstract

The invention belongs to the technical field of fluid measurement, and discloses a PIV (Particle Image Velocimetry)-based mixed liquid flow field and concentration measuring device, and a method of using the device for measuring the flow field or the concentration. The measuring device comprises a main water box, an experimental box body, a buffer tank, a water storage box and a PIV system, wherein the main water box is divided into an A-region box body and a B-region box body for providing liquid of a mixed pipeline and liquid of a main pipeline respectively, the liquid is mixed in the experimental box body, and measurement on the flow filed or the concentration is carried out via the PIV system. Tracer particles are sprayed in water in the main water box and the buffer tank, and the flow field of the mixed liquid is measured via the PIV system; fluorescent particles are added to the two box bodies of the main water box respectively for preparing different concentrations, and the concentration of the mixed liquid can be measured via the PIV system in combination with a LIF (Laser Induce Fluorescence) system; measurement on the mixed flow field and the mixed concentration can be carried out in the same device, water and tracer particles can be saved, and the flow field and the concentration can be detected in real time.

Description

technical field [0001] The invention belongs to the technical field of fluid measurement, and in particular relates to a PIV-based mixed fluid flow field and concentration measurement device, and a method for using the device to measure flow field or concentration. Background technique [0002] At present, the methods for measuring the liquid flow field include: (1) ratio tube velocity measurement method, using ratio tube tube to measure the velocity according to the law of energy conservation, which has the advantages of simple structure, convenient use, high measurement accuracy and good stability; (2) hotline / Hot film velocimetry, using the principle of heat balance to measure the average velocity and pulsation velocity of the fluid, has the advantages of small inertia, wide frequency response, high sensitivity, and little interference to the flow field; (3) LDV (Laser Doppler Velocity) Laser Doppler And related technologies, using the Doppler effect, using the high cohe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M10/00G01N21/64
Inventor 曾劲松黄煌喻迪冯郁成姜新春
Owner SOUTH CHINA UNIV OF TECH
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