| Issue |
E3S Web Conf.
Volume 341, 2022
2022 7th International Conference on Green Materials and Environmental Engineering (GMEE2022)
|
|
|---|---|---|
| Article Number | 01011 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/e3sconf/202234101011 | |
| 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: m201971069@hust.edu.cn
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
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