Study of mud splatter pattern

• Main Authors: Kuang-Ling Huang, 黃冠嶺
• Other Authors: Hsien-Ter Chou
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/10808719212005296713

碩士 === 國立中央大學 === 土木工程研究所 === 97 === The fingered splatter left behind after a liquid drop impacts a solid surface with different impact velocity and impact angle are experimentally examined in this study. The impact velocity of the droplet is varied by different falling distances, and the impact angles of the droplet impacting platform varies from 15° to 90°. The MATLAB counting program, image software, and a high speed camera are used to analyze the geometry property of the splatter. With increasing impact velocities, the area and the fingers of splatter also first increase, then approach constant value when the droplet reach ultimate impact velocity. Larger the impact angle, exhibits more splatter fingers but smaller the splatter area. The ratio of the short axis to the long axis is approximate to sin value of the impact angle. Length distribution of fingers approximate to Maxwell distribution while the droplet contour side view is close to the Beta function.