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Seventh International Symposium on Turbulence and Shear Flow Phenomena
July, 28-31, 2011, Ottawa Convention Centre, Ottawa, Canada

DOI: 10.1615/TSFP7

INVESTIGATION OF TRANSITIONAL AND TURBULENT HEAT AND MOMENTUM TRANSPORT IN A ROTATING CAVITY

pages 1-6
DOI: 10.1615/TSFP7.2250
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RESUMO

The paper gives the results of the DNS/LES which was performed to investigate the 3D turbulent and transitional non-isothermal flows within a rotor/stator cavity. Computations were performed for the cavity of the aspect ratio L=3.0-35.0 and curvature parameter Rm=1.8, for different rotations and Prandtl numbers. Two flow cases were considered: i) flow fully dominated by centrifugal and Coriolis forces (with negligibly small Earth accelerations term); ii) the Rayleigh−Benard convection with superimposed moderate rotation. The main purpose of the investigations was to analyze the influence of rotation and aspect ratio on the flow structure and heat transfer. In the paper we analyzed distributions of the Reynolds stress tensor components, Nusselt number and others structural parameters, which can be useful for modeling purposes.

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