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International Heat Transfer Conference 12

ISSN: 2377-424X (online)
ISSN: 2377-4371 (flashdrive)

Direct Numerical Simulation of Turbulent Flow in a Rotating Pipe

Amir-Ali Feiz
Université de Marne-La-Vallée, Laboratoire d'Etude des Transferts d'Energie, et de Matière (LETEM), Champs sur Marne—77454 Marne-la-Vallée, Cedex 2, France

Miryem Ould-Rouis
Université de Marne-La-Vallée, Laboratoire d'Etude des Transferts d'Energie, et de Matière (LETEM), Champs sur Marne—77454 Marne-la-Vallée, Cedex 2, France

Guy Lauriat
Université Paris-Est, Marne la Vallée 5 Boulevard Descartes, Cité Descartes, Champs sur Marne, 77454 Marne la Vallée, Cedex 02

DOI: 10.1615/IHTC12.1220
6 pages

Abstract

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.

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