Micrometric Ripples in a Capillary Tube, the Effect of Microgravity
| type de publication |
article dans une revue internationale avec comité de lecture |
| date de publication |
2007 |
| auteur(s) |
Merlen Alain; Zoueshtiagh Farzam; Thomas Peter J.; Thomy Vincent |
| journal (abréviation) |
Microgravity Sciences and Technology (Microgravity Science and Technology) |
| volume (numéro) |
19 (3-4) |
| | |
| pages |
60 – 61 |
| résumé |
The oscillatory motion of a fluid carrying micron-sized particles inside a capillary tube is investigated experimentally in standard gravity condition. It is found that initially uniformly distributed particles can segregate and accumulate to form regularly spaced micron-sized particle clusters. The wavelength of the micro clusters is compared to data formacro-scale sand-ripple patterns and found to obey the sameuniversal scaling as these. A physical and dimensional analysis is performed that confirms the universality of the experimentally observed scaling. The effect of gravity can therefore be discussed on the basis of this universal scaling. |
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