|type de publication
||article dans une revue internationale avec comité de lecture
|date de publication
||Merlen Alain; Zoueshtiagh Farzam; Thomas Peter J.; Thomy Vincent|
||Microgravity Sciences and Technology (Microgravity Science and Technology)
| || |
||60 – 61
||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.