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A device and method for regulating bubble behavior through various external disturbance methods

A technology of external disturbance and bubbles, applied in the direction of chemical analysis using catalysis, to achieve the effect of promoting rapid desorption and diffusion, and easy installation

Active Publication Date: 2020-05-22
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the bubbles are generated by photocatalysis, and the behavior characteristics of the bubbles are controlled by external disturbances, especially the sliding and collision of the bubbles on the electrode surface and the bouncing and merging near the electrode surface during the photocatalytic process are regulated by various external disturbances. The study of isokinetic behavior is rarely reported

Method used

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  • A device and method for regulating bubble behavior through various external disturbance methods
  • A device and method for regulating bubble behavior through various external disturbance methods
  • A device and method for regulating bubble behavior through various external disturbance methods

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: Movement and coalescence of bubbles on the electrode surface

[0032] The interaction between bubbles includes collision contact, wake-induced contact and shear motion. In this embodiment, the relative position of the laser focus spot on the electrode surface is controlled by adjusting the three-dimensional motorized translation stage 15, and the relatively moving laser beam drives the bubbles to move and converge on the electrode surface. The implementation and results are as follows:

[0033] based on figure 1 The experimental system shown does not use the chopper system, the transflective prism 5 and the beam turning system 6. The three-dimensional electric stage 15 is controlled by the precision motion controller 16, and the electrolyte is 0.5mol / L Na 2 SO 4 Solution, laser power 13mW, applied bias voltage 0.1V, high-speed camera shooting speed 250fps, microscope magnification 2.4×, experiments were performed at room temperature and normal pressure.

[0034] Und...

Embodiment 2

[0035] Example 2: Interaction between single laser, double optical path and double bubbles

[0036] This example will discuss the control method of double bubble interaction generated by single laser and double light path, including moving bubbles and fixed bubbles to coalesce, and bouncing small bubbles and fixed large bubbles collide and coalesce. The implementation scheme and effects are as follows Said:

[0037] based on figure 1 In the experimental system shown, the chopper plate 2 can be installed in the main light path or any split light path, the chopping frequency is 20 Hz, and the electrolyte is 0.5 mol / L Na 2 SO 4 Solution, laser power 13mW, applied bias voltage 0.1V, high-speed camera shooting speed 10000fps, microscope magnification 2.4×, the experiment was carried out at room temperature and normal pressure.

[0038] Under the above-mentioned implementation conditions, the main optical path is divided into two sub-optical paths by the transflective prism 5 and the beam ...

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Abstract

The invention discloses a device and method for regulating a bubble behavior through multiple external disturbance manners. Firstly, the incident position of a split light path can be adjusted througha beam deflector so as to control movement of bubbles generated by photocatalysis on the surface of an electrode, thus controlling interactions of the bubbles with bubbles in anther split light path;secondly, a light chopping system can be mounted in a main light path or any split light path to regulate and control a bounce characteristic of two bubbles or single bubble; and thirdly, a three-dimensional electric displacement stage has an adjustable speed, can control movement of the single bubble or two bubbles on the surface of the electrode, and can allow bubbles growing on the surface ofthe electrode in a relatively motionless manner to be in a certain flow field, thus facilitating research on the dynamic law of bubbles in the flow field. According to the device and the method, the dynamic behavior of bubbles is controlled through a combination of multiple external disturbance manners, and an external disturbance system is precisely adjustable and controllable, the device is easyto be modified, and the device and the method are valuable for research on the bubble dynamic behaviors, and are very flexible in practical application.

Description

Technical field [0001] The invention belongs to the technical field of photocatalysis and multiphase flow crossover technology, and specifically relates to a device and method for regulating bubble behavior through a variety of external disturbance methods, and particularly relates to regulating the bubble power on the surface of the photoelectrode and near the surface by external disturbance during the photocatalysis process Devices and methods of learning behavior. Background technique [0002] Multiphase flow and energy transfer phenomena are widely present in the main processes of energy conversion and utilization, such as the micro-multiphase flow photochemical and thermochemical reaction process in hydrogen energy production, large-scale thermal energy power system and the vapor-liquid two-phase flow inside the process. Heat transfer, gas-liquid-solid three-phase flow in the process of efficient exploitation of oil and gas reservoirs and mixed transportation, etc. As the d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/10
CPCG01N31/10
Inventor 郭烈锦曹振山王晔春胡晓玮陈娟雯
Owner XI AN JIAOTONG UNIV