"Barchan" dunes in the lab
classification
❄️ cond-mat
keywords
dunedunesshapebarchaninvariantsandcarryingdemonstrate
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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.
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