Abo Bibliothek: Guest

ISSN Online: 2377-424X

International Heat Transfer Conference 12
August, 18-23, 2002, Grenoble, France

Direct Numerical Simulation of Turbulent Flow in a Rotating Pipe

Get access (open in a dialog) DOI: 10.1615/IHTC12.1220
6 pages

Abstrakt

Direct Numerical Simulation (DNS) has been applied to study the turbulent flow in an axially rotating pipe and in a stationary pipe. We examine the effects of the Reynolds number and the effects of the rotation number on turbulent flow characteristics. The mean velocity profiles and the statistics are compared to the numerical and experimental data available in the literature, and reasonably good agreement is obtained. In particular, the results show that the axial velocity profile gradually approaches a laminar shape with an increase in rotation rate, due to the stability effect caused by the centrifugal force. Consequently, the friction factor decreases. To have a better understanding of the behavior of this kind of complex flows and to investigate the effects of higher Reynolds numbers, we have also carried out Large Eddy Simulations (LES). Few results are discussed.