The results from direct numerical simulations of turbulent Boussinesq convection are briefly presented. The flow is computed for a cylindrical cell of aspect ratio 1/2 in order to compare with the results from recent experiments. The results span eight decades of Ra from 2×10^6 to 2×10^14 and form the baseline data for a strictly Boussinesq fluid of constant Prandtl number (Pr = 0.7). A conclusion is that the Nusselt number varies nearly as the 1/3 power of Ra for about four decades towards the upper end of the Ra range covered.

Amati, G., Koal, K., Massaioli, F., Sreenivasan, K., Verzicco, R. (2005). Turbulent thermal convection at high Rayleigh numbers for a Boussinesq fluid of constant Prandtl number. PHYSICS OF FLUIDS, 17(12), 121701 [10.1063/1.2140023].

Turbulent thermal convection at high Rayleigh numbers for a Boussinesq fluid of constant Prandtl number

VERZICCO, ROBERTO
2005-01-01

Abstract

The results from direct numerical simulations of turbulent Boussinesq convection are briefly presented. The flow is computed for a cylindrical cell of aspect ratio 1/2 in order to compare with the results from recent experiments. The results span eight decades of Ra from 2×10^6 to 2×10^14 and form the baseline data for a strictly Boussinesq fluid of constant Prandtl number (Pr = 0.7). A conclusion is that the Nusselt number varies nearly as the 1/3 power of Ra for about four decades towards the upper end of the Ra range covered.
2005
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore ING-IND/06 - FLUIDODINAMICA
English
Con Impact Factor ISI
Direct numerical simulation, large-Rayleigh number thermal convection
http://pof.aip.org/resource/1/phfle6/v17/i12/p121701_s1
Amati, G., Koal, K., Massaioli, F., Sreenivasan, K., Verzicco, R. (2005). Turbulent thermal convection at high Rayleigh numbers for a Boussinesq fluid of constant Prandtl number. PHYSICS OF FLUIDS, 17(12), 121701 [10.1063/1.2140023].
Amati, G; Koal, K; Massaioli, F; Sreenivasan, K; Verzicco, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/52798
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