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Study of liquid droplets impact on dry inclined surface
Author(s) -
Cui Jie,
Chen Xueli,
Wang Fuchen,
Gong Xin,
Yu Zunhong
Publication year - 2009
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.309
Subject(s) - surface tension , mechanics , momentum (technical analysis) , weber number , surface (topology) , materials science , solid surface , viscosity , inertial frame of reference , physics , thermodynamics , composite material , classical mechanics , mathematics , geometry , finance , reynolds number , chemical physics , turbulence , economics
The impact of droplets on the surface is a common phenomenon. The outcome of a droplet impacting on a solid surface depends on the properties of the liquid, the surface conditions and the kinematics parameters, i.e. velocity and momentum. During the impact process, the phenomenons, such as spread, rebound, often appear. This paper presents the results of an experimental investigation of droplets impacting on inclined solid surface at low velocity. The effects of the impact parameters on the droplet impingement are studied. Measures were performed using a high‐speed camera. It has been shown that the impacting droplets spread on the surface until liquid surface tension and viscosity overcame inertial forces, after which they recoiled off the surface. The maximum diameter of a droplet spread was measured. In addition, a further forecasting expression has been obtained through energy model when a droplet impacts on an inclined surface without splashing. It is found that it is in good agreement with experimental value and can well predict the maximum spread diameter. Copyright © 2009 Curtin University of Technology and John Wiley & Sons, Ltd.