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TECHNICAL PAPERS

Centrifugal Flow in a Rotor-Stator Cavity

[+] Author and Article Information
Sébastien Poncet

I.R.P.H.E., UMR 6594,  CNRS-Université Aix-Marseille I & II, Technopôle Château-Gombert, 49 rue F. Joliot-Curie, 13384 Marseille Cédex 13, Franceponcet@irphe.univ-mrs.fr

Roland Schiestel, Marie-Pierre Chauve

I.R.P.H.E., UMR 6594,  CNRS-Université Aix-Marseille I & II, Technopôle Château-Gombert, 49 rue F. Joliot-Curie, 13384 Marseille Cédex 13, France

J. Fluids Eng 127(4), 787-794 (Mar 30, 2005) (8 pages) doi:10.1115/1.1949645 History: Received November 17, 2004; Revised March 30, 2005

The present work considers the turbulent flow inside an annular rotor-stator cavity with and without centrifugal throughflow. Extensive measurements performed using a two-component laser-Doppler anemometer technique, and pressure transducers are compared to numerical predictions based on one-point statistical modeling using a low-Reynolds-number second-order full-stress transport closure. A study of the flow control parameters is performed, and, for the first time, a better insight into the transition from Batchelor to Stewartson types of flow is gained from this study. The advanced second-order model is confirmed to be the adequate level of closure to describe such complex flows.

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Copyright © 2005 by American Society of Mechanical Engineers
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Figures

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Figure 1

Experimental setup and notations

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Figure 2

Mean velocity profiles for Re=106,G=0.036,Cw=5929 at r*=0.56: (-) the RSM model and (엯) the experimental data

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Figure 3

Axial profiles of the Reynolds stress tensors for Re=106,G=0.036,Cw=5929 at r*=0.56: (-) the RSM model and (엯) the experimental data

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Figure 4

Radial pressure distribution for Re=4.15×106 and G=0.036: (-) the RSM model and the experimental data for (×) Cw=10317, (◻) Cw=5159, (▵) Cw=2579, (엯) Cw=0

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Figure 5

Radial pressure distribution for Re=4.15×106 and G=0.012: (-) the RSM model and the experimental data for (×) Cw=10317, (◻) Cw=5159, (▵) Cw=2579, (엯) Cw=0

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Figure 6

Mean velocity profiles for Cw=5159,G=0.036 at r*=0.68: (-) the RSM model and (엯) the experimental data for (a) Re=5.189×105, (b) Re=1.038×106, and (c) Re=4.15×106

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Figure 7

Mean velocity profiles for Re=4.15×106,G=0.036 at r*=0.44: (-) the RSM model and (엯) the experimental data for (a) Cw=0, (b) Cw=2579, (c) Cw=5159, and (d) Cw=10317

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Figure 8

Mean velocity profiles for G=0.036,Re=1.038×106,Cw=5159 at (a) r*=0.44, (b) r*=0.68, and (c) r*=0.92: (-) the RSM model and (엯) the experimental data

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Figure 9

Mean velocity profiles for G=0.012,Re=1.038×106,Cw=5159 at (a) r*=0.44, (b) r*=0.68, and (c) r*=0.92: (-) the RSM model and (엯) the experimental data

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Figure 10

Effect of the aspect ratio on the streamline patterns (RSM), 20 regularly spaced intervals for Re=1.038×106,Cw=5159: (a) G=0.036,0⩽Ψ∕(ΩR22)⩽0.0297 and (b) G=0.012,0⩽Ψ∕(ΩR22)⩽0.0686

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Figure 11

Mean K-curve: (▵) the RSM model, (엯) the experimental data, (--) K=2×(−5.9×Cqr+0.63)5∕7−1 and (-) K=0.032+0.32×e−Cqr∕0.028

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