Velocity fields and particle trajectories for bed load over subaqueous barchan dunes

  title={Velocity fields and particle trajectories for bed load over subaqueous barchan dunes},
  author={Jo{\~a}o Luiz Wenzel and Erick de Moraes Franklin},
  journal={Granular Matter},
This paper presents an experimental investigation of moving grains over subaqueous barchan dunes that consisted of spherical glass beads of known granulometry. Prior to each test run, a pre-determined quantity of grains was poured inside a closed conduit, and the grains settled on its bottom wall forming one conical heap. As different turbulent water flows were imposed, each heap evolved to a barchan dune, which was filmed with a high-speed camera. An image processing code was written to… Expand
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