Transport of Conditional Reynolds Stresses in Turbulent Flows with Intermittency

Abstract

The transport equations for conditional Reynolds stresses and turbulent kinetic energy defined in turbulent flows with intermittency have been obtained. The intermittency considered may be based on any criteria that divide the flow into two mutually exclusive regions, including turbulent/nonturbulent intermittency, and intermittency defined by scalar. The derived transport equations involve terms representing the entrainment at the interface and the interaction between the two regions. Available experimental data have been examined in the light of the derived transport equations.