We use FLUENT to calculate the wind profile over barchans and transverse dunes. The form of the streamlines of flow separation at the lee side of the dunes is determined for a symmetric barchan dune in three dimensions, and for the height profile of a measured transverse dune field in the Lenc -o´is
The dune size distribution and scaling relations of barchan dune fields
✍ Scribed by Orencio Durán; Veit Schwämmle; Pedro G. Lind; Hans J. Herrmann
- Book ID
- 106251420
- Publisher
- Springer
- Year
- 2008
- Tongue
- English
- Weight
- 452 KB
- Volume
- 11
- Category
- Article
- ISSN
- 1434-5021
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## Abstract A new theoretical scheme is presented to model the shape of a sand dune at equilibrium that does not require iterative calculations of the interaction between the wind flow and topography. The model is constructed by incorporating theory based on aerodynamics into a grain‐scale model th
## ABSTRACT Field‐measured patterns of mean velocity and turbulent airflow are reported for isolated barchan dunes. Turbulence was sampled using a high frequency sonic anemometer, deriving near‐surface Reynolds shear and normal stresses. Measurements upwind of and over a crest‐brink separated barch