Minimal Model for Sand Dunes

Details Minimal Model for Sand Dunes Minimal Model for Sand Dunes

2001-01-24

arxiv.org/abs/cond-mat/0101380v2

Phys. Rev. Lett. 88, 054301 (2002)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures, replaced with publishd version

Scientific paper

10.1103/PhysRevLett.88.054301

We propose a minimal model for aeolian sand dunes. It combines an analytical description of the turbulent wind velocity field above the dune with a continuum saltation model that allows for saturation transients in the sand flux. The model provides a qualitative understanding of important features of real dunes, such as their longitudinal shape and aspect ratio, the formation of a slip face, the breaking of scale invariance, and the existence of a minimum dune size.

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