E3S Web Conf.
Volume 341, 20222022 7th International Conference on Green Materials and Environmental Engineering (GMEE2022)
|Number of page(s)||5|
|Published online||31 January 2022|
Experimental study of liquid droplets impact on powder surface: The application of effective dimensionless parameters in analysis
Huazhong University of Science and Technology, School of Energy and Power Engineering, 1037 Luoyu Road, Wuhan, China
* Corresponding author: firstname.lastname@example.org
Spreading dynamics of liquid droplets impacting onto powder bed are experimentally studied using high-speed photography. Dimensionless numbers—We, Re, the modified We* and Re∗ corrected by substrate deformation—are used to analyze the impact behaviors of droplets. The spreading time and the maximum spreading factor are further analyzed. The spreading time is accurately described by a universal scaling law that is obtained from the modified dimensionless time vs. the effective Weber number (We∗), and the maximum spreading factor is found to follow the modified classic scaling law βmax = f(We*, Re*).
Key words: Maximum spreading / Effective Weber number / Spreading time / Droplet impact
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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