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TECHNICAL PAPERS

On the Prediction of Axisymmetric Rotating Flows by a One-Equation Turbulence Model

[+] Author and Article Information
V. I. Vasiliev

ABB Uniturbo Ltd., 13 Ul. Kasatkina, P.O. Box 16, 129301, Moscow, Russia

J. Fluids Eng 122(2), 264-272 (Feb 09, 2000) (9 pages) doi:10.1115/1.483254 History: Received November 24, 1998; Revised February 09, 2000
Copyright © 2000 by ASME
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References

Figures

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Scheme of disk cavity and calculation grid: (a) rotor-stator system, (b) contra-rotating disks
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Swirl velocity distributions: (a) axial profiles, (b) radial distribution at the mid plane (rotor-stator system, G=0.155,r=0,Re=8×105)
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Velocity distributions in rotor-stator cavity (G=0.0685,r/R=0.1,Re=6.9×105) ⋄ experiment [[dashed_line]] Launder-Sharma model, ⋯ Morse model, – one-equation model (present calculations)
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Effect of Re on radial variation of swirl velocity in rotor-stator cavity (G=0.1,r/R=0,x/s=0.5): 1, Re=105; 2, Re=4×105; 3, Re=106; 4, Re=4×106, ⋯ Morse model, – one-equation model (present calculations)
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Computational grid for cavity with axial clearance
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Prescribed swirl velocity at the axial clearance
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Streamline maps for different swirl in the clearance (the values of streamfunction are normalized by 0.01ΩR2)
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Influence of the external flfow on the momentum friction
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(a) Velocity distributions between contra-rotating disks (G=0.12,Re=105,y/R=0.85,Γ=0;0.4). (b) Velocity distributions between contra-rotating disks (G=0.12,Re=105,y/R=0.85, Γ=0.6;1.0).
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(a) Velocity distributions between contra-rotating disks (G=0.12,Γ=0.6,Re=1.25×106) (b) Velocity distributions between contra-rotating disks (G=0.12, Γ=1.0, Re=1.25×106)
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Comparison of calculated and measured Nusselt number in rotating cavity
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Influence of Coriolis forces on the temperature distribution in rotating cavity (θ contours at G=0.12,Re=5×107m=0.005)
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Comparison of analytical and numerical solutions for rotating cavity (G=0.06,Re=107m=0.1)

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