Numerical Simulation of Contraction Scour in an Open Laboratory Channel

A finite-volume computer code developed at the Institute for Hydromechanics, University of Karlsruhe, has been used to calculate the flow and sediment transport in a laboratory channel with constriction and movable bed. The flow is calculated by solving the fully 3-D Reynolds-averaged Navier-Stokes equations with k−E turbulence model. The bed deformation is obtained from an overall mass-balance equation for sediment transport and the bed-load transport is simulated with a nonequilibrium model. The calculated results for flow and scour development in the laboratory channel are compared with experimental measurements. The sensitivity of the simulated results to the nonequilibrian adaptation-length parameter in the nonequilibrium bed-load transport model is investigated systematically, which represents the main contribution of this paper.

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  • Supplemental Notes:
    • Abstract reprinted with permission from ASCE
  • Authors:
    • Duc, Bui Minh
    • Rodi, Wolfgang
  • Publication Date: 2008-4

Language

  • English

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Filing Info

  • Accession Number: 01099383
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 12 2008 3:52PM