A droplet impacting liquid film visualization experimental platform and using method thereof

Abstract

The invention discloses a liquid drop-liquid film impacting visualization experiment platform and an application method thereof. The liquid drop-liquid film impacting visualization experiment platform comprises a liquid drop generation device, a liquid film generation device, a liquid film moving device, an image acquisition and detection system and a controlling and processing system. The devices and the systems cooperate with one another, research of visualization experiments that different kinds and different numbers of liquid drops with different diameters, different deflecting angles and different dropping speeds drop to different kinds of static liquid films with different inclination angles or different kinds of liquid films with different inclination angles and different flow speeds is achieved, and the image acquisition and detection system is used for detecting the liquid drop diameter, the liquid drop speed, the liquid film thickness and acquiring images taken when the liquid drops impact the liquid film. The liquid drop-liquid film impacting visualization experiment platform is characterized in that the visualization experiment platform is simple to operate and convenient to use, and can control and adjust the parameters of the liquid drops and the liquid film accurately, and is suitable for fields of oil exploitation, aerospace, chemical material preparation equipment and the like, and is suitable for correlated oil drop research before fuel oil of the engine burns, and research of spraying sterilization cooling tunnels and the like.

Description

technical field [0001] The invention relates to a visual experiment platform for droplet impacting liquid film and a using method thereof, belonging to the technical field of instruments and meters. Background technique [0002] With the development of social economy and the advancement of science and technology, liquid droplets are more and more widely used in industry, medicine, and life, such as research on oil droplets before fuel combustion in engines, inkjet research on printers, and spray sterilization Research on cooling tunnels, research on oil extraction and chemical material preparation equipment, etc. Liquid film flow exists widely in nature, and liquid film heat transfer cooling, as an efficient heat and mass transfer technology, has been applied in many fields, such as spray cooling, thermal spraying, etc. [0003] Droplet collision flowing liquid film is a typical problem of free surface flow, and it is one of the hot issues in fluid mechanics research. The s...

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Problems solved by technology

[0004] At present, most of the existing experimental platforms for droplet impact on liquid film are complex in structure, high in cost, inaccurate in precision control of droplet diameter, and have a large error between droplet speed and target value, and cannot continuously produce liquid with the same parameters in function. Droplets cannot make the droplets have an accurate impact angle, nor can they produce droplets with adjustable parameters.

In addition, the methods and principles of liquid film production are not the same. The overflow method is widely used to produce a flowing liquid film with adjustable thickness. Adjustment, and can not change multiple parameters of the liquid film at the same time

At present, the existing liquid films are all static liquid films, and there are no patents related to moving liquid films.

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