Formation of the "superconducting" core in turbulent thermal convection

J. J. Niemela, K. R. Sreenivasan

Research output: Contribution to journalArticle


A sinusoidal temperature perturbation is superimposed on the bottom plate of a cylindrical convection cell, and its decay is measured at the cell midheight. Rayleigh numbers up to Ra=1013 and aspect ratios1 and 4 are considered. The technique allows a dynamic measurement of the height of the layer interposed between the superconducting core and the boundary. This deduced height is in good agreement with results from recent numerical simulations.

Original languageEnglish (US)
Article number184502
JournalPhysical Review Letters
Issue number18
StatePublished - May 6 2008


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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