The capillary wave and initial spreading velocity in the spreading phase of drop impacting on a glass surface are studied experimentally, while the drop photos are obtained by using a high-speed video camera, which can catch up to 9000 images per second with an exposure time of 4 µs. A wide range of impact velocities are studied by varying the fall height, showing different capillary waves. All attention is given to the capillary wave and initial spreading velocity of drop. A non-linear relation between the wavelength and the impact velocity is found experimentally. Combined with the minimum spreading radius theory, a linear relation between the initial spreading velocity and the impact velocity is acquired.
Li, P., Wang, S., Dong, W. (2019). Capillary Wave and Initial Spreading Velocity at Impact of Drop onto a Surface. Journal of Applied Fluid Mechanics, 12(4), 1265-1272. doi: 10.29252/jafm.12.04.29614
MLA
P. F. Li; S. F. Wang; W. L. Dong. "Capillary Wave and Initial Spreading Velocity at Impact of Drop onto a Surface". Journal of Applied Fluid Mechanics, 12, 4, 2019, 1265-1272. doi: 10.29252/jafm.12.04.29614
HARVARD
Li, P., Wang, S., Dong, W. (2019). 'Capillary Wave and Initial Spreading Velocity at Impact of Drop onto a Surface', Journal of Applied Fluid Mechanics, 12(4), pp. 1265-1272. doi: 10.29252/jafm.12.04.29614
VANCOUVER
Li, P., Wang, S., Dong, W. Capillary Wave and Initial Spreading Velocity at Impact of Drop onto a Surface. Journal of Applied Fluid Mechanics, 2019; 12(4): 1265-1272. doi: 10.29252/jafm.12.04.29614
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