| Autor: |
P. F. Li, S. F. Wang, W. L. Dong |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Journal of Applied Fluid Mechanics, Vol 12, Iss 4, Pp 1265-1272 (2019) |
| Druh dokumentu: |
article |
| ISSN: |
1735-3572 |
| Popis: |
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. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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