Calculation of the separation streamlines of barchans and transverse dunes
H. J. Herrmann, J. S. Andrade Jr., V. Schatz, G. Sauermann, E. J. R., Parteli
TL;DR
This study employs computational fluid dynamics to analyze wind flow separation streamlines over barchan and transverse dunes, providing insights into airflow patterns relevant for understanding dune morphology.
Contribution
It introduces a method to calculate flow separation streamlines over dunes using FLUENT, including three-dimensional analysis of symmetric barchans and real transverse dune fields.
Findings
Flow separation streamlines are successfully computed for barchan dunes.
The method reveals detailed airflow patterns over transverse dunes.
Results enhance understanding of dune formation and evolution.
Abstract
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 Len\c{c}\'ois Maranhenses.
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