Advertisement

Statistical Analysis of Turbulent Natural Convection in Low Prandtl Number Fluids

  • I. Otić
  • G. Grötzbach
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 101)

Summary

Direct numerical simulations (DNS) of turbulent Rayleigh-Bénard convection for a liquid metal with Pr = 0.025 are used to perform statistical analysis, in particular to evaluate the turbulent diffusion term in the temperature variance equation. These results are compered with DNS based predictions by a standard model of the turbulent diffusion term in the temperature variance equation and by a model which was recently developed by the authors.

Keywords

Prandtl Number Rayleigh Number Large Eddy Simulation Direct Numerical Simulation Turbulent Heat 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    L.N. Carteciano and G. Grötzbach. Validation of turbulence models in the computer code FLUTAN for a free hot sodium jet in different buoyancy flow regimes. Technical Report FZKA 6600, Forschungszentrum Karlsruhe, 2003.Google Scholar
  2. 2.
    B.J. Daly and F.H. Harlow. Transport equations in turbulence. Phys. Fluids, 13:2634–2649, 1970.CrossRefGoogle Scholar
  3. 3.
    G. Grötzbach. Direct numerical and large eddy simulation of turbulent channel flows. In N.P. Cheremisinoff, editor, Encyclopaedia of fluid mechanics, pages 1337–1391. Gulf Publ. Houston, 1987.Google Scholar
  4. 4.
    W.P. Jones and P. Musonge. Closure of the Reynolds-stress and scalar flux equations. Phys. Fluids, 31:3598–3604, 1988.MathSciNetGoogle Scholar
  5. 5.
    B.E. Launder. On the computation of convective heat transfer in complex turbulent flows. Trans. ASME, 110:1112–1128, 1988.CrossRefGoogle Scholar
  6. 6.
    I. Otić, G. Grötzbach, and M. Wörner. Analysis and modelling of the temperature variance equation in turbulent natural convection for low Prandtl number fluids. submited for publication, 2004.Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • I. Otić
    • 1
  • G. Grötzbach
    • 1
  1. 1.Institut für Kern- und EnergietechnikForschungszentrum Karlsruhe GmbHKarlsruhe

Personalised recommendations