An experimental investigation of the oscillatory boundary layer around the breaking point

Abstract

The article describes experimental investigation of the turbulent oscillatory boundary layer in the vicinity of the wave breaking point. Measurements were carried out on the inclined bottom in 29 cross-sections, of which 3 are investigated in the current paper. These cross-sections are chosen so that they include the breaking point. The semi-logarithmic plots of dimensionless velocity profiles were plotted on the basis of laser Doppler anemometer measurements. The velocity distributions in breaking waves are essentially different from those observed in steady flows or in oscillatory flows in rectangular U-tubes.