Lift off and turbidity currents in the environment

Document typeConference lecture
Defense date2014
PublisherInstitute of Thermomechanics, Academy of Sciences of the Czech Republic
Rights accessOpen Access
Abstract
This contribution presents an experimental investigation on the behaviour of sediments
in a turbulent boundary layer flow, it compares the energy and vorticity needed to generate
a turbidity current and the zero mean flow lift off and entrainment across a stably stratified
density interface, either produced by solutes, sediment concentration or both. The
experimental parameters are used to quantify the entrainment, the mixing efficiency and
different types of dominant instability and the topological aspects of the turbulent cascade
in the environment. The experiments allow to detected both horizontally and vertically.
The local sediment and velocity fields. Grid turbulence in an enclosed two layer system
is measured with PIV as well as with sonic velocimetry. Observations of the horizontal
and vertical velocity energy spectra as well as the structure functions are used to estimate
local mixedness, entrainment and intermittency.
CitationRedondo, J. M. Lift off and turbidity currents in the environment. A: Particles in Flows. "Particles in Flows". Prague: Institute of Thermomechanics, Academy of Sciences of the Czech Republic, 2014, p. 29-30.
ISBN978-80-87012-45
Collections
Files | Description | Size | Format | View |
---|---|---|---|---|
Prague-Sum_abstract_Redondo1(1).pdf | 40,90Kb | View/Open |
Except where otherwise noted, content on this work
is licensed under a Creative Commons license
:
Attribution-NonCommercial-NoDerivs 3.0 Spain