Experimental study on radial temperature gradient effect of a Taylor–Couette flow with axial wall slits

Li, Dong; Kang, In-Su; Cha, Jae-Eun; Kim, Hyoung-Bum

doi:10.1016/j.expthermflusci.2011.04.016

Cited by 15 publications

(4 citation statements)

References 14 publications

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“…Experimentally, flow visualization has been the predominant method for investigation of thermoconvective flows in cylindrical annuli with RTG [36][37][38][48][49][50] . More recently, Liu et al 51 presented a 2D-PIV (Particle Image Velocimetry) study of velocity and vorticity profiles at a maximum Rayleigh number of 3.5 × 10 4 . They 51 observed an influence of the RTG on the transition process and the critical Reynolds number; however, at large Reynolds number values they found that the transition process was similar to that of an isothermal condition.…”

Section: Please Cite This Article As Doi:101063/15119811mentioning

confidence: 99%

A large thermal turbulent Taylor-Couette (THETACO) facility for investigation of turbulence induced by simultaneous action of rotation and radial temperature gradient

Singh

Bonnesoeur

Besnard

et al. 2019

Review of Scientific Instruments

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A thermal Taylor-Couette facility (THETACO) has been designed to investigate turbulent flows generated by differential rotation and radial temperature gradient. It consists of a cylindrical annulus with a rotating inner cylinder and fixed outer cylinder. The electric heating system is installed inside the inner cylinder and the annulus is immersed in a large cylindrical container filled with cooling fluid.Temperature regulators control independently the temperature of the inner surface of the inner cylinder and that of the cooling fluid. The facility allows to reach values of the Reynolds number ( ~ 5 × 10 5 ) and of the Rayleigh number ( ~ 3 × 10 6 ) for water as working fluid. The facility provides torque measurements, a full optical access at the side and from the bottom for velocity measurements using PIV (2D, stereoscopic and tomographic). Temperature measurements in the flow can be performed by thermochromic liquid crystals or laser induced fluorescence.

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Section: Please Cite This Article As Doi:101063/15119811mentioning

confidence: 99%

A large thermal turbulent Taylor-Couette (THETACO) facility for investigation of turbulence induced by simultaneous action of rotation and radial temperature gradient

Singh

Bonnesoeur

Besnard

et al. 2019

Review of Scientific Instruments

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“…A series of correlation formulas for average Nusselt number calculation along the whole cylindrical axis were reported by Fenot et al [18]. Recently, Liu et al [19] showed that the wavy frequency of the vortices would be lower when temperature of the flow is increased, and there is an accelerating effect on their 5 formation when the inner cylinder is much cooler than that of the outer one. Effect of temperature gradient brought by the axial cold purge flow has not been investigated in the studies listed above.…”

Section: Plr Pump Applicationmentioning

confidence: 99%

Influence of fluid temperature gradient on the flow within the shaft gap of a PLR pump

et al. 2015

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“…These changes and flow behavior were examined using a visualization that seeded aluminum powder on the working fluid; in the Koschmieder´s work, the Orings and the rotor were two independent solid bodies, and this fact could not ensure the flow axis symmetry. Over the years, several studies of disturbed Taylor-Couette flow have been performed by modifying the rotor surface (Ikeda and Maxworthy, 1994;Sprague et al, 2008;Sprague and Weidman, 2009;Deng et al, 2010;Mahlout et al, 2015;Liu et al, 2011;Jeng, Tzeng and Lin ,2006;Richter et al, 2008 andPawar andThorat, 2012), but a parametric study of the defined shape of the perturbations has not been conducted.…”

Section: Introductionmentioning

confidence: 99%

A Study of the Taylor-Couette Flow with Finned Surface Rotation

Álvarez¹,

Vicente²,

Solorio³

et al. 2019

JAFM

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In this study, the Taylor-Couette flow was disturbed by incorporating annular fins over the inner rotating surface. The finned surface had three parameters: height, width, and length between fins. In this work, seven different fin configurations, in which only the fin height varied, were examined and compared using experimental and numerical techniques. We found that annular fins disturbed the flow behavior by reducing the smooth critical Taylor number (Ta=57.18), but more important, we noticed a vortex enlargement induced by the incorporation of a relatively modest perturbation (b´<0.5) and this change remained in a wider range (0.57

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Experimental study on radial temperature gradient effect of a Taylor–Couette flow with axial wall slits

Cited by 15 publications

References 14 publications

A large thermal turbulent Taylor-Couette (THETACO) facility for investigation of turbulence induced by simultaneous action of rotation and radial temperature gradient

A large thermal turbulent Taylor-Couette (THETACO) facility for investigation of turbulence induced by simultaneous action of rotation and radial temperature gradient

Influence of fluid temperature gradient on the flow within the shaft gap of a PLR pump

A Study of the Taylor-Couette Flow with Finned Surface Rotation

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