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.
|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||14th European Turbulence Conference, ETC 2013|
|Period||1/09/13 → 4/09/13|