From Intermittent to Nonintermittent Behavior in Two Dimensional Thermal Convection in a Soap Bubble | Zendy

F. Seychelles | Zendy; François Ingremeau | Zendy; C. Pradère | Zendy; H. Kellay | Zendy

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From Intermittent to Nonintermittent Behavior in Two Dimensional Thermal Convection in a Soap Bubble

Author(s) -

F. Seychelles,

François Ingremeau,

C. Pradère,

H. Kellay

Publication year - 2010

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.105.264502

Subject(s) - soap bubble , turbulence , scaling , bubble , convection , thermal , soap film , observable , physics , mechanics , gaussian , materials science , thermodynamics , geometry , quantum mechanics , mathematics

International audienceTurbulent thermal convection in half a soap bubble heated from below displays a new and surprising transition from intermittent to nonintermittent behavior for the temperature field. This transition is observed here by studying the high order moments of temperature increments. For high temperature gradients, these structure functions display Bolgiano-like scaling predicted some 60 years ago with no observable deviations. The probability distribution functions of these increments are Gaussian throughout the scaling range. These measurements are corroborated with additional velocity structure function measurements

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