| PHYSICS AND ENGINEERING MECHANICS |
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Experimental study of the dynamic characteristics of an oblique impact of a water droplet |
| YAO Yina, LI Cong, TAO Zhenxiang, YANG Rui |
| Institute of Public Safety Research, Department of Engineering Physics, Tsinghua University, Beijing 100084, China |
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Abstract The impact of water droplets on a smooth stainless-steel surface was studied experimentally for various velocities and angles. The experiments studied the effects of impact angle and Weber number on the dynamic characteristics of the impact process, such as the displacement of leading and trailing edges, the maximum spread diameter and gliding length. The results showed that the maximum spread diameter increased with increasing Weber number, but decreased with increasing surface slope. However, once the water droplet reached equilibrium, the droplet contact diameter was found to be independent of the impact angle and the Weber number but mainly depended on the advancing and receding contact angles of the droplet on the surface. In addition, increasing both the impact angle and the Weber number increased the gliding length.
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| Keywords
droplet
impact
oblique
dynamic characteristics
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Issue Date: 16 February 2019
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2019,
Vol. 59
