Fluxes and energy dissapation in thermal convection and shear flows

B. Eckhardt; S. Grossmann; Detlef Lohse

doi:10.1209/0295-5075/78/24001

Fluxes and energy dissapation in thermal convection and shear flows

B. Eckhardt, S. Grossmann, Detlef Lohse

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

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Abstract

We expose analogies between turbulence in a fluid heated from below (Rayleigh-Bénard (RB) flow) and shear flows: The unifying theory for RB flow (see Grossmann S. and Lohse D., J. Fluid Mech., 407 (2000) 27 and subsequent refinements) can be extended to the flow between rotating cylinders (Taylor-Couette flow) and pipe (Poiseuille) flow. We identify "wind" dissipation rates and momentum fluxes that are analogous to the dissipation rate and heat flux in RB flow. The proposed unifying description for the three cases is consistent with the experimental data.

Original language	Undefined
Pages (from-to)	24001-1-24001-6
Number of pages	6
Journal	Europhysics letters
Volume	78
Issue number	2
DOIs	https://doi.org/10.1209/0295-5075/78/24001
Publication status	Published - 2007

Keywords

METIS-242502
IR-61322

Access to Document

10.1209/0295-5075/78/24001

Cite this

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T1 - Fluxes and energy dissapation in thermal convection and shear flows

AU - Eckhardt, B.

AU - Grossmann, S.

AU - Lohse, Detlef

PY - 2007

Y1 - 2007

N2 - We expose analogies between turbulence in a fluid heated from below (Rayleigh-Bénard (RB) flow) and shear flows: The unifying theory for RB flow (see Grossmann S. and Lohse D., J. Fluid Mech., 407 (2000) 27 and subsequent refinements) can be extended to the flow between rotating cylinders (Taylor-Couette flow) and pipe (Poiseuille) flow. We identify "wind" dissipation rates and momentum fluxes that are analogous to the dissipation rate and heat flux in RB flow. The proposed unifying description for the three cases is consistent with the experimental data.

AB - We expose analogies between turbulence in a fluid heated from below (Rayleigh-Bénard (RB) flow) and shear flows: The unifying theory for RB flow (see Grossmann S. and Lohse D., J. Fluid Mech., 407 (2000) 27 and subsequent refinements) can be extended to the flow between rotating cylinders (Taylor-Couette flow) and pipe (Poiseuille) flow. We identify "wind" dissipation rates and momentum fluxes that are analogous to the dissipation rate and heat flux in RB flow. The proposed unifying description for the three cases is consistent with the experimental data.

KW - METIS-242502

KW - IR-61322

U2 - 10.1209/0295-5075/78/24001

DO - 10.1209/0295-5075/78/24001

M3 - Article

SN - 0295-5075

VL - 78

SP - 24001-1-24001-6

JO - Europhysics letters

JF - Europhysics letters

IS - 2

ER -