Evidences of Bolgiano-Obhukhov scaling in three-dimensional Rayleigh-Bénard convection

Enrico Calzavarini, Federico Toschi, Raffaele Tripiccione
2002 Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics  
We present new results from high-resolution high-statistics direct numerical simulations of a tri-dimensional convective cell. We test the fundamental physical picture of the presence of both a Bolgiano-like and a Kolmogorov-like regime. We find that the dimensional predictions for these two distinct regimes (characterized respectively by an active and passive role of the temperature field) are consistent with our measurements.
doi:10.1103/physreve.66.016304 pmid:12241478 fatcat:cqe633qltjch3hyknqehbkvpgq