A Turbulent Energy Dissipation Model for Flows With Drag Reduction

[+] Author and Article Information
Samuel Hassid, Michael Poreh

Technion—Israel Institute of Technology, Haifa, Israel

J. Fluids Eng 100(1), 107-112 (Mar 01, 1978) (6 pages) doi:10.1115/1.3448580 History: Received June 03, 1976; Online October 12, 2010


A turbulent-energy-dissipation model is proposed for flows with and without drag reduction. The model is based on an eddy diffusivity approximation in the momentum equation, and on transport equations for the turbulent energy and the turbulent energy dissipation. The model describes the mean velocity profile and the turbulent energy distribution as a function of the reduction in the friction coefficient. It also yields a turbulent length scale which is shown to grow with drag reduction. The predictions of the model are in good agreement with the available experimental data.

Copyright © 1978 by ASME
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