Abstract: A simple turbulence model has been proposed, which is based on the Reynolds stress equation and on the turbulence energy dissipation equation. By increasing the viscosity in the equations for ...

Abstract: A simple turbulent energy model, based on an improved version of Wolfshtein’s model for Newtonian flows, with a variable damping parameter, is used to describe the effect of linear polymers ...

Abstract: The analysis of density jumps in two-layer channel flows of miscible fluids controlled by a downstream obstruction, in which one of the layers is infinitely deep and at rest, is extended to ...