Optimal Taylor-Couette turbulence

Chao Sun; Dennis P.M. van Gils; Sander G. Huisman; Siegfried Grossmann; Detlef Lohse

Optimal Taylor-Couette turbulence

Chao Sun, Dennis P.M. van Gils, Sander G. Huisman, Siegfried Grossmann, Detlef Lohse

Physics of Fluids

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

Abstract

Strongly turbulent Taylor-Couette flow with independently rotating inner and outer cylinders with a radius ratio of η = 0.716 is experimentally studied. From global torque measurements, we analyse the dimensionless angular velocity flux Nuω(Ta, a) as a function of the Taylor number Ta and the angular velocity ratio a = −ωo/ωi in the large-Taylor-number regime 10¹¹. Ta. 10¹³ and well off the inviscid stability borders (Rayleigh lines) a = −η² for co-rotation and a = ∞ for counter-rotation. With the help of laser Doppler anemometry, we provide angular velocity profiles and in particular identify the radial position rn of the neutral line, defined by hω(rn)it = 0.

Original language	English
Publication status	Published - Sep 2013
Event	14th European Turbulence Conference, ETC 2013 - Lyon, France Duration: 1 Sep 2013 → 4 Sep 2013 Conference number: 14

Conference

Conference	14th European Turbulence Conference, ETC 2013
Abbreviated title	ETC
Country/Territory	France
City	Lyon
Period	1/09/13 → 4/09/13

Cite this

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title = "Optimal Taylor-Couette turbulence",

abstract = "Strongly turbulent Taylor-Couette flow with independently rotating inner and outer cylinders with a radius ratio of η = 0.716 is experimentally studied. From global torque measurements, we analyse the dimensionless angular velocity flux Nuω(Ta, a) as a function of the Taylor number Ta and the angular velocity ratio a = −ωo/ωi in the large-Taylor-number regime 1011. Ta. 1013 and well off the inviscid stability borders (Rayleigh lines) a = −η2 for co-rotation and a = ∞ for counter-rotation. With the help of laser Doppler anemometry, we provide angular velocity profiles and in particular identify the radial position rn of the neutral line, defined by hω(rn)it = 0.",

author = "Chao Sun and {van Gils}, {Dennis P.M.} and Huisman, {Sander G.} and Siegfried Grossmann and Detlef Lohse",

year = "2013",

month = sep,

language = "English",

note = "14th European Turbulence Conference, ETC 2013, ETC ; Conference date: 01-09-2013 Through 04-09-2013",

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TY - CONF

T1 - Optimal Taylor-Couette turbulence

AU - Sun, Chao

AU - van Gils, Dennis P.M.

AU - Huisman, Sander G.

AU - Grossmann, Siegfried

AU - Lohse, Detlef

N1 - Conference code: 14

PY - 2013/9

Y1 - 2013/9

N2 - Strongly turbulent Taylor-Couette flow with independently rotating inner and outer cylinders with a radius ratio of η = 0.716 is experimentally studied. From global torque measurements, we analyse the dimensionless angular velocity flux Nuω(Ta, a) as a function of the Taylor number Ta and the angular velocity ratio a = −ωo/ωi in the large-Taylor-number regime 1011. Ta. 1013 and well off the inviscid stability borders (Rayleigh lines) a = −η2 for co-rotation and a = ∞ for counter-rotation. With the help of laser Doppler anemometry, we provide angular velocity profiles and in particular identify the radial position rn of the neutral line, defined by hω(rn)it = 0.

AB - Strongly turbulent Taylor-Couette flow with independently rotating inner and outer cylinders with a radius ratio of η = 0.716 is experimentally studied. From global torque measurements, we analyse the dimensionless angular velocity flux Nuω(Ta, a) as a function of the Taylor number Ta and the angular velocity ratio a = −ωo/ωi in the large-Taylor-number regime 1011. Ta. 1013 and well off the inviscid stability borders (Rayleigh lines) a = −η2 for co-rotation and a = ∞ for counter-rotation. With the help of laser Doppler anemometry, we provide angular velocity profiles and in particular identify the radial position rn of the neutral line, defined by hω(rn)it = 0.

UR - http://www.scopus.com/inward/record.url?scp=85085773808&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:85085773808

T2 - 14th European Turbulence Conference, ETC 2013

Y2 - 1 September 2013 through 4 September 2013

ER -

Optimal Taylor-Couette turbulence

Abstract

Conference

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