Abo Bibliothek: Guest
Turbulence Heat and Mass Transfer 6. Proceedings of the Sixth International Symposium On Turbulence Heat and Mass Transfer
September, 14-18, 2009, Rome, Italy

DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf


ISBN Print: 978-1-56700-262-1

ISSN: 2377-2816

Numerical investigation of spectrums of turbulent convection

page 7
DOI: 10.1615/ICHMT.2009.TurbulHeatMassTransf.190
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ABSTRAKT

Three-dimensional turbulent convectional flows of viscous and incompressible fluid in a horizontal layer numerically is simulated at heating from below. The boundaries of a layer are stress-free. For temperature pulsations the Kolmogorov k−5/3 and k−2.4 spectrums have been found. Also we observed for velocity pulsations the Obukhov-Bolgiano k−11/5, k−3 and k−5 spectrums. The last spectrum had been suggested in theoretical works for liquid with large Prandtl number and spectrum k−3 has been derived in numerical simulations of turbulent convection. The present results are in agreement with experimental results and expand the numerical results of other authors.

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