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Title

Capillary Wave and Initial Spreading Velocity at Impact of Drop onto a Surface

Writers

l. p.f. | WANG S.F. | Dong w.l.

Pages

 Start Page 1265 | End Page 1272

Abstract

 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 μ s. 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.

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