Reynolds numbers near the ultimate state of turbulent Rayleigh-Bénard convection

Guenter Ahlers; Xiaozhou He; Dennis P.M. van Gils; Eberhard Bodenschatz

Reynolds numbers near the ultimate state of turbulent Rayleigh-Bénard convection

Guenter Ahlers
, Xiaozhou He
, Dennis P.M. van Gils
, Eberhard Bodenschatz

University of California at Santa Barbara
Max Planck Institute for Dynamics and Self-Organization
International Collaboration for Turbulence Research

Research output: Contribution to conference › Paper › peer-review

Abstract

We report on measurements of the mean-flow Reynolds number ReU and the rms fluctuation Reynolds number ReV in turbulent Rayleigh-Bénard convection as a function of the Rayleigh number Ra for 4 × 10^{11 <}_∼ Ra ^<_∼ 2 × 10¹⁴ and Pr ' 0.8. Both can be described by the same power law with an effective exponent ζ = 0.44, in agreement with predictions for ReU but in disagreement with predictions for ReV .

Original language	English
State	Published - 2015
Externally published	Yes
Event	15th European Turbulence Conference, ETC 2015 - Delf, Netherlands Duration: 25 Aug 2015 → 28 Aug 2015

Conference

Conference	15th European Turbulence Conference, ETC 2015
Country/Territory	Netherlands
City	Delf
Period	25/08/15 → 28/08/15

Cite this

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title = "Reynolds numbers near the ultimate state of turbulent Rayleigh-B{\'e}nard convection",

abstract = "We report on measurements of the mean-flow Reynolds number ReU and the rms fluctuation Reynolds number ReV in turbulent Rayleigh-B{\'e}nard convection as a function of the Rayleigh number Ra for 4 × 1011 <∼ Ra <∼ 2 × 1014 and Pr ' 0.8. Both can be described by the same power law with an effective exponent ζ = 0.44, in agreement with predictions for ReU but in disagreement with predictions for ReV .",

author = "Guenter Ahlers and Xiaozhou He and \{van Gils\}, \{Dennis P.M.\} and Eberhard Bodenschatz",

note = "Publisher Copyright: {\textcopyright} TU Delft.; 15th European Turbulence Conference, ETC 2015 ; Conference date: 25-08-2015 Through 28-08-2015",

year = "2015",

language = "英语",

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TY - CONF

T1 - Reynolds numbers near the ultimate state of turbulent Rayleigh-Bénard convection

AU - Ahlers, Guenter

AU - He, Xiaozhou

AU - van Gils, Dennis P.M.

AU - Bodenschatz, Eberhard

PY - 2015

Y1 - 2015

N2 - We report on measurements of the mean-flow Reynolds number ReU and the rms fluctuation Reynolds number ReV in turbulent Rayleigh-Bénard convection as a function of the Rayleigh number Ra for 4 × 1011 <∼ Ra <∼ 2 × 1014 and Pr ' 0.8. Both can be described by the same power law with an effective exponent ζ = 0.44, in agreement with predictions for ReU but in disagreement with predictions for ReV .

AB - We report on measurements of the mean-flow Reynolds number ReU and the rms fluctuation Reynolds number ReV in turbulent Rayleigh-Bénard convection as a function of the Rayleigh number Ra for 4 × 1011 <∼ Ra <∼ 2 × 1014 and Pr ' 0.8. Both can be described by the same power law with an effective exponent ζ = 0.44, in agreement with predictions for ReU but in disagreement with predictions for ReV .

UR - https://www.scopus.com/pages/publications/85085774510

M3 - 论文

AN - SCOPUS:85085774510

T2 - 15th European Turbulence Conference, ETC 2015

Y2 - 25 August 2015 through 28 August 2015

ER -

Reynolds numbers near the ultimate state of turbulent Rayleigh-Bénard convection

Abstract

Conference

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