Description

Bed load transport over ripples and dunes in rivers exhibits strong spatial and temporal variability due to the complex turbulence field caused by flow separation at bedform crests. A turbulence-resolving

Bed load transport over ripples and dunes in rivers exhibits strong spatial and temporal variability due to the complex turbulence field caused by flow separation at bedform crests. A turbulence-resolving flow model downstream of a backward-facing step, coupled with a model integrating the equations of motion of individual sand grains, is used to investigate the physical interaction between bed load motion and turbulence downstream of separated flow. Large bed load transport events are found to correspond to low-frequency positive pressure fluctuations.

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    Date Created
    • 2015-02-09
    Resource Type
  • Text
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    Identifier
    • Digital object identifier: 10.5194/esurf-3-105-2015
    • Identifier Type
      International standard serial number
      Identifier Value
      2196-6311
    • Identifier Type
      International standard serial number
      Identifier Value
      2196-632X
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    Schmeeckle, M. W. (2015). The role of velocity, pressure, and bed stress fluctuations in bed load transport over bed forms: numerical simulation downstream of a backward-facing step. Earth Surface Dynamics, 3(1), 105-112. doi:10.5194/esurf-3-105-2015

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