Observation device for liquid drop collision with metal bottom plate, and application thereof

Abstract

The invention belongs to the technical field of engineering thermophysics / airplane safety, and relates to an observation device for liquid drop collision with a metal bottom plate, and application thereof. The observation device comprises a lifting platform, data acquisition equipment and a data analysis system. According to the invention, an experimental device can realize quantitative measurement of kinetic parameters such as spreading radius, movement slip distance, rebound height and the like of droplets dropping on the surface of a sample table, and can research the surface temperature distribution and phase change time of the droplets based on the droplet light transmission measured by a high-speed camera and the droplet surface temperature measured by a high-speed infrared camera; data analysis adopts an MATLAB program autonomously programmed in a laboratory, so that the convenience and the accuracy of data analysis are ensured; and the whole system has important significance for researching the motion and phase change heat characteristic behaviors, rules and mechanisms of impacting the solid cold surface by the water droplets or impacting the surfaces of different metal materials by the metal droplets.

Description

technical field [0001] The invention belongs to the technical field of engineering thermophysics / aircraft safety, and relates to an observation device for liquid droplets colliding with a metal base plate and an application thereof. Background technique [0002] The aircraft has the characteristics of fast speed and comfort, and plays an indispensable role in today's global economic development. The "2018 Civil Aviation Industry Development Statistical Bulletin" issued by the Civil Aviation Administration of China shows that in the past five years, the annual passenger traffic of the entire industry The average annual growth rate of cargo transportation has also exceeded 5%. The "Air Passenger Transport Expectation Report for the Next 20 Years" released by the International Air Transport Association shows that the aviation industry will still maintain a strong momentum of development. At the same time, China is expected to Within 5 years, it will become the largest civil avi...

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Problems solved by technology

[0006] Patent CN106682380A discloses the "method and device for obtaining the maximum spreading diameter of a droplet hitting a wall", which considers the influence of wall wetting on the maximum spreading diameter and improves the accuracy of calculating the maximum spreading diameter, but does not involve the droplet itself Phase transition process, and its heat transfer characteristics to the base plate

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