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Large-scale circulation and oscillation in turbulent Rayleigh–Bénard convection with a Prandtl number Pr = 12.3

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An experimental study of the three-dimensional spatial structure of low-frequency temperature oscillations in cylindrical Rayleigh–Benard convection of a fluid with a Prandtl number Pr = 12.3, aspect ratio Γ ≡… Click to show full abstract

An experimental study of the three-dimensional spatial structure of low-frequency temperature oscillations in cylindrical Rayleigh–Benard convection of a fluid with a Prandtl number Pr = 12.3, aspect ratio Γ ≡ D/L = 1.00 (D is the diameter, and L is the height) and Rayleigh-number 5 × 1010 Ra* where the LSC is no longer a coherent single-roll structure. Ra* for Pr = 12.3 is 1 × 1010.

Keywords: large scale; circulation oscillation; convection; number; prandtl number; scale circulation

Journal Title: AIP Advances
Year Published: 2021

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