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. F., Wang, S. F., & Dong, W. L. (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. F., Wang, S. F., Dong, W. L. (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. F., Wang, S. F., Dong, W. L. 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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