Use of k-epsilon-gamma model to predict intermittency in turbulent boundary-layers

The intermittency profile in the turbulent flat-plate zero pressure-gradien t boundary-layer and a thick axisymmetric boundary-layer has been computed using the Reynolds-averaged k -epsilon - gamma model, where k denotes turbu lent kinetic energy, epsilon its rate of dissipation, and gamma intermitten cy. The Reynolds-averaged model is simpler compared to the conditional mode l used in the literature. The dissipation equation of the Reynolds-averaged model is modified to account for the effect of entrainment. It has been sh own that the model correctly predicts the observed intermittency of the flo ws. [S0098-2202(00)02403-2].