A many-body dissipative particle dynamics study of droplets impacting on fiber

Huajian Liu,Damin Cao

MODERN PHYSICS LETTERS B(2023)

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摘要
Collisions between droplets and fibers are a common phenomenon in nature and daily life, such as raindrops on the surface of spider webs and the surface of transmission cables. We present a numerical model to study the droplets impacting on fibers with the many-body dissipative particle dynamics (MDPD) method. The droplets impact on neutral fiber at different velocities and diameters is simulated. The diffusion trend of droplets is affected by the velocities and diameters. According to the morphologies of droplets, the results of impacting could be divided into three types, stick to the fiber, merge and split into parts. The spreading factors and internal velocity distributions are obtained and analyzed. And the determination of regimes at these states is found. In addition, the droplets impact on hydrophobic fiber is also investigated.
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关键词
Many-body dissipative particle dynamics,droplet impact,cylindrical surfaces
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