Turbulent convection with time-dependent forcing

J. J. Niemela; K. R. Sreenivasan

doi:10.1088/1742-6596/150/3/032072

Turbulent convection with time-dependent forcing

Research output: Contribution to journal › Article › peer-review

Abstract

A new technique is used to explore the structure of turbulent convecting flows. A sinusoidal temperature perturbation is superimposed on the bottom plate of a cylindrical convection cell filled with cryogenic helium gas and its decay is measured at the cell mid-height. The measurements allow the first dynamic estimate of the core part of the flow which conducts fluid effectively without any thermal resistance. The estimate is quantitatively consistent with recent numerical simulations.

Original language	English (US)
Article number	032072
Journal	Journal of Physics: Conference Series
Volume	150
Issue number	3
DOIs	https://doi.org/10.1088/1742-6596/150/3/032072
State	Published - 2009

ASJC Scopus subject areas

General Physics and Astronomy

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10.1088/1742-6596/150/3/032072

Cite this

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title = "Turbulent convection with time-dependent forcing",

abstract = "A new technique is used to explore the structure of turbulent convecting flows. A sinusoidal temperature perturbation is superimposed on the bottom plate of a cylindrical convection cell filled with cryogenic helium gas and its decay is measured at the cell mid-height. The measurements allow the first dynamic estimate of the core part of the flow which conducts fluid effectively without any thermal resistance. The estimate is quantitatively consistent with recent numerical simulations.",

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AB - A new technique is used to explore the structure of turbulent convecting flows. A sinusoidal temperature perturbation is superimposed on the bottom plate of a cylindrical convection cell filled with cryogenic helium gas and its decay is measured at the cell mid-height. The measurements allow the first dynamic estimate of the core part of the flow which conducts fluid effectively without any thermal resistance. The estimate is quantitatively consistent with recent numerical simulations.

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DO - 10.1088/1742-6596/150/3/032072

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Turbulent convection with time-dependent forcing

Abstract

ASJC Scopus subject areas

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