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Influence of Initial Flow Boundary Conditions on Undular Tidal Bores

Author(s): L. David; B. Lebon; L. Chatellier; D. Calluaud

Linked Author(s): Damien Calluaud

Keywords: Tidal Bore; PIV measurements; Boundary conditions; Turbulent flow

Abstract:

For several years, tidal bores have been the object of many investigations but some aspects remain always unknown. In this paper, we generate such type of flow in a laboratory to investigate with classical measurement tools associated to optical diagnostics, the influence of different parameters as the water depth, the upstream velocity and initial conditions of boundary layer. Different kinds of moving bores have been generated for several Froude number and three initial boundary layer conditions. The water depth evolution doesn’t seem to be affected by the boundary-layer conditions while the internal flow is significantly altered during the passage of the whelps depending on these conditions. For the first time, the velocity field evolution is shown inside the water column.

DOI:

Year: 2014

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