Abstract
The wave-induced flow over a fixed bottom boundary beneath an internal solitary wave of elevation propagating in an unsheared, two-layer, stably stratified fluid is investigated experimentally. Measurements of the velocity field close to the bottom boundary are presented to illustrate that in the lower layer the fluid velocity near the bottom reverses direction as the wave decelerates while higher in the water column the fluid velocity is in the same direction as the wave propagation. The observation is similar in nature to that for wave-induced flow beneath a surface solitary wave. Contrary to theoretical predictions for internal solitary waves, no evidence for either boundary layer separation or vortex formation is found beneath the front half of tje wave in the adverse pressure gradient region of the now. (C) 2010 American Institute of Physics. [doi: 10.1063/13327289]
Original language | English |
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Article number | 026601 |
Pages (from-to) | - |
Number of pages | 8 |
Journal | Physics of Fluids |
Volume | 22 |
Issue number | 2 |
DOIs | |
Publication status | Published - Feb 2010 |
Keywords
- INDUCED GLOBAL INSTABILITY
- SEDIMENT RESUSPENSION
- NUMERICAL-SIMULATION
- LAMINAR SEPARATION
- SHELF
- SLOPE