Grain size dependence of barchan dune dynamics
| Autor: | C. Groh, N. Aksel, I. Rehberg, C. Kruelle, Masami Nakagawa, Stefan Luding |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Condensed Matter::Other Water flow FOS: Physical sciences Pattern formation Grain size dependence Geometry Pattern Formation and Solitons (nlin.PS) Condensed Matter - Soft Condensed Matter Granular material Nonlinear Sciences - Pattern Formation and Solitons Grain size Physics::Geophysics Condensed Matter::Soft Condensed Matter Barchan Attractor Soft Condensed Matter (cond-mat.soft) Nonlinear Sciences::Pattern Formation and Solitons Scaling |
| Zdroj: | AIP Conference Proceedings. |
| DOI: | 10.1063/1.3180089 |
| Popis: | The dependence of the barchan dune dynamics on the size of the grains involved is investigated experimentally. Downsized barchan dune slices are observed in a narrow water flow tube. The relaxation time from an initial symmetric triangular heap towards an asymmetric shape attractor increases with dune mass and decreases with grain size. The dune velocity increases with grain size. In contrast, the velocity scaling and the shape of the barchan dune is independent of the size of the grains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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