Computation of the turbulent plane plume using the k-epsilon-(t'(2))over-bar-gamma model

The k-epsilon-<(t'(2))over bar>-gamma turbulence model is used to predict t he self-similar plane plume in a quiescent environment. This model has been recently used to predict the turbulent axisymmetric plume. Modelled transp ort equations for the turbulent kinetic energy (k), its dissipation (epsilo n), mean square temperature fluctuations (<(t'(2))over bar>) and intermitte ncy factor (gamma) have been solved numerically along with the equations fo r the mean quantities. A small change in one of the model constants, incorp oration of the dissipation term in the intermittency transport equation and withdrawal of the intermittency interaction invariant term from the dissip ation equation yield predictions of mean and turbulent quantities including intermittency that are in good agreement with the experimental data. (C) 2 000 Elsevier Science Inc. All rights reserved.