This case is a 2D width-averaged simulation of a turbidity current located inside a flume. A time-dependent solution is used for the Navier-Stokes equations and the convection-diffusion equation for the sediment concentration. The maximum water velocity is around 1 m/s. The sediment concentration in the inflowing water is 13 volume %. The results from the numerial model correspond well with the measurements in a physical model.

* Animation of the turbidity current seen as a longitudinal profile of the sediment concentration.
The current is animated with 3 seconds between each picture. The part of the flume shown in the figure
is 10 meters long.*

*Longitudinal profile showing velocity after 15 seconds.*

*Longitudinal profile showing sediment concentration after 15 seconds.*

*Longitudinal profile showing pressure (minus hydrostatic component) after 15 seconds.*

*Longitudinal profile showing eddy-viscosity after 15 seconds.*

*Longitudinal profile showing turbulent kinetic energy after 15 seconds.*

*Longitudinal profile showing vertical velocity after 15 seconds.*

Olsen, N. R. B. and Tesaker, E. (1995) "Numerical and physical modeling of a turbidity current", IAHR 26th. Biennial Congress, London.

*This page was last updated: 1. March 2010*