High rayleigh number turbulent convection in a gas near the gas-liquid critical point

Shay Ashkenazi, Victor Steinberg

Research output: Contribution to journalArticlepeer-review

103 Scopus citations

Abstract

SF6 in the vicinity of its critical point was used to study turbulent convection up to exceptionally high Rayleigh numbers, Ra (up to 5 × 1014) and to verify for the first time the generalized scaling laws for the heat transport and the large scale circulation velocity as a function of Ra and the Prandtl number, Pr, in a very wide range of these parameters. Both scaling laws obtained are consistent with theoretical predictions by Shraiman and Siggia [Phys. Rev. A 42, 3650 (1990)]

Original languageEnglish (US)
Pages (from-to)3641-3644
Number of pages4
JournalPhysical Review Letters
Volume83
Issue number18
DOIs
StatePublished - Jan 1 1999
Externally publishedYes

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