Physics – Condensed Matter
Scientific paper
2001-08-23
C.R. Mecanique (320), 2002, pp. 185-191
Physics
Condensed Matter
3 pages, 4 figures
Scientific paper
10.1016/S1631-0721(02)01447-X
We demonstrate the feasibility of studying dunes in a laboratory experiment.
It is shown that an initial sand pile, under a wind flow carrying sand,
flattens and gets a shape recalling barchan dunes. An evolution law is proposed
for the profile and the summit of the dune. The dune dynamics is shown to be
shape invariant. The invariant shape, the ``dune function'' is isolated.
Dauchot Olivier
Daviaud Francois
Gasquet C.
Lechenault Frederic
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