Numerical investigation of a droplet impacting obliquely on a horizontal solid surface

Zhao, Haibo1,4; Han, Xing1; Li, Jiayu2; Li, Wei1; Huang, Tao2; Yu, Peng2,3,4; Wang, Liqiu1

2022-01-10

10.1103/PhysRevFluids.7.013601

Physical Review Fluids   影响因子和分区

2469-990X

Obliquely impacting of droplet on horizontal solid surface is studied numerically. The impact velocity (v(1)), both the magnitude and direction, is varied to analyze its effect on spreading area and droplet kinetics. The normal impact velocity (v(1)(n)) is found to be the main factor that influences the temporal variation of spreading area in droplet obliquely impacting process. The influence of normal Weber number (We(n)) on the restitution coefficients (epsilon(n) and epsilon(t)) is also investigated. Within the same impact angle interval, the normal restitution coefficient (epsilon(n)) grows with small We(n) and is with the general scaling relationship of epsilon(n) similar to We(n)(-1/4) for moderate We(n), which is similar to that in the droplet normal impact process. The tangential restitution coefficient (epsilon(t)) is found to vary around a constant value and this observation has been analyzed from the view of both droplet kinetics and dynamics. Moreover, we also study the influence of tangential velocity on viscous dissipation and find that large tangential velocity would induce higher viscous dissipation energy.

SCI ; EI

英语

通讯

Guangdong Provincial Key Laboratory of Turbulence Research and Applications[2019B21203001] ; Department of Education of Guangdong Province[2020KZDZX1185] ; National Natural Science Foundation of China (NSFC)[12071367,91852205] ; Research Grants Council of Hong Kong["GRF 17205421",17204420,17210319,17204718,"CRF C1006-20WF"]

Physics

Physics, Fluids & Plasmas

WOS:000743553200003

AMER PHYSICAL SOC

20220411531256

Velocity ; Viscous flow

Fluid Flow, General:631.1

Web of Science

1.Univ Hong Kong, Dept Mech Engn, Hong Kong 999077, Peoples R China
2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Turbulence Res & Applicat, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Ctr Complex Flows & Soft Matter Res, Shenzhen 518055, Peoples R China

Zhao, Haibo,Han, Xing,Li, Jiayu,et al. Numerical investigation of a droplet impacting obliquely on a horizontal solid surface[J]. Physical Review Fluids,2022,7(1).

Zhao, Haibo.,Han, Xing.,Li, Jiayu.,Li, Wei.,Huang, Tao.,...&Wang, Liqiu.(2022).Numerical investigation of a droplet impacting obliquely on a horizontal solid surface.Physical Review Fluids,7(1).

Zhao, Haibo,et al."Numerical investigation of a droplet impacting obliquely on a horizontal solid surface".Physical Review Fluids 7.1(2022).