Direct simulation of turbulent entrainment due to a plume impinging on a density interface

Maarten van Reeuwijk, Gary R Hunt, Harm J Jonker

Journal of Physics: Conference Series · 2011

Abstract

The law for turbulent entrainment due to plumes and jets impinging on a density interface is subject to significant uncertainty, with reported differences in entrainment rates up to a factor of 10. We report preliminary results obtained by Direct Numerical Simulation which are part of a PRACE project on turbulent entrainment carried out on JUGENE at Jülich, Germany. Various interface tracking methods are discussed and the entrainment coefficient is determined.