Direct Measurements of Reynolds Stresses and Turbulence in the Bottom Boundary Layer
Abstract
a) Measure the Reynolds stresses, velocity profile, vorticity, dissipation, and turbulent spectra in the bottom boundary layer of the coastal ocean using particle imaging velocimetry (PIV). The validity of these direct stress measurements is independent of assumptions about the boundary layer structure, turbulent spectra and balance of production and dissipation. b) Quantify the temporal variation of turbulent stresses in relation to the oceanographic parameters that represent the local environment, such as waves, currents, vertical density gradient, internal wave regime, and nature of the water-sediment interface. The conclusions will be used to determine the relative importance of different mechanisms which control the velocity profile and the turbulent parameters in the benthic boundary layer of the coastal ocean. c) Quantify the spatial variation of the stress in different environments to determine the relationship between point measurements and spatial averages, that are necessary for numerical modeling of coastal currents.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2008
- Accession Number
- ADA533116
Entities
People
- Joseph Katz
- Thomas R. Osborn
Organizations
- Johns Hopkins University