Convective Heat Transfer of the Rotational and Axial Flow between Two Concentric Cylinders

Tachibana, Fujio; Fukui, Sukeo

doi:10.1299/jsme1958.7.385

Cited by 87 publications

(75 citation statements)

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“…A third possible transition is shown by Tachibana et al [35] and Tachibana and Fukui [41]. Comparison between their two studies seems to show a transition for Ta ¼ 10 8 .…”

Section: Taylor Flow and Turbulent Flow Heat Transfermentioning

confidence: 84%

“…As seen in Table 1, h, e/R 1 and G vary from one author to the next. Once the Taylor number exceeds 10 8 ,Tachibana and Fukui [41] have recorded an exponent n of 1/3 rather than ¼, The deviation from their prior numbers (and from other authors) is explained by the non-overlaping of the measuring ranges utilized in the two studies: the studies of Tachibana and Fukui [41] is conducted for greater value of Taylor numbers. It likewise bears mentioning that Tzeng [42] observed much higher heat transfer than the other authors without any marked differences with regard to their respective configurations.…”

Section: Taylor Flow and Turbulent Flow Heat Transfermentioning

confidence: 90%

“…Tachibana and Fukui [41] multiply their results by a coefficient that takes into account the axial lengthening of annular space (Table 3). Their approach consists in directly adding the heat flux transferred by simple rotation to the heat flux transferred through simple axial flow.…”

Section: Modelizations and Correlationsmentioning

confidence: 99%

See 2 more Smart Citations

A review of heat transfer between concentric rotating cylinders with or without axial flow

Fénot

Bertin

Dorignac

et al. 2011

International Journal of Thermal Sciences

179

122

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“…A third possible transition is shown by Tachibana et al [35] and Tachibana and Fukui [41]. Comparison between their two studies seems to show a transition for Ta ¼ 10 8 .…”

Section: Taylor Flow and Turbulent Flow Heat Transfermentioning

confidence: 84%

Section: Taylor Flow and Turbulent Flow Heat Transfermentioning

confidence: 90%

See 1 more Smart Citation

A review of heat transfer between concentric rotating cylinders with or without axial flow

Fénot

Bertin

Dorignac

et al. 2011

International Journal of Thermal Sciences

179

122

View full text Add to dashboard Cite

“…There are several studies which looked into the heat transfer phenomena associated with the Taylor-Couette flow [10,[15][16][17]. Most of these investigations focused on measurements of the inner cylinder heat transfer coefficients for cases with radial temperature gradient within the annulus gap.…”

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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“…Simmers and Cony (1979) experimentally showed that the Nusselt number decreased with the increase of the through-flow Reynolds number and it was nearly constant beyond a certain value of the through-flow Reynolds number for Re=0-3000 and Ta =200-6500. Tachibana and Fukui (1964) proposed empirical correlation with and without slots on the inner cylinder surface for Re=380-4200 and Ta =120-5900. Aubert et al (2015) performed heat transfer experiment for Re=7500-11200 and Ta =3350-9430 and proposed empirical correlation in which the Nusselt number was expressed as NuRe Fénot et al (2011) reviewed previous studies on the heat transfer characteristics in the Taylor-Couette flow with and without through-flow in detail.…”

Section: Introductionmentioning

confidence: 99%

Through-flow effects on Nusselt number and torque coefficient in Taylor-Couette-Poiseuille flow investigated by large eddy simulation

Ohsawa

Murata

Iwamoto

2016

JTST

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Flow in a concentric annular passage with a rotating inner cylinder, which is called Taylor-Couette flow, is important in industrial applications, such as electric motor which requires not only effective cooling of rotating shaft but also saving power required for the axis rotation. When the through flow is superposed, which is called Taylor-Couette-Poiseuille flow, it affects the cooling efficiency and the torque required for the axis rotation. To the authors' knowledge, previous studies have been focused on either the Nusselt number or the torque coefficient in the Taylor-Couette-Poiseuille flow. Therefore, it is difficult to estimate the through-flow effects on both of them under the same geometry and flow conditions. In this study, the through-flow effects on both the Nusselt number and the torque coefficient in the Taylor-Couette-Poiseuille flow under the same geometry and flow conditions were investigated by performing large eddy simulation. The through-flow Reynolds number, Re, was varied from 500 to 8000 under constant Taylor and Prandtl numbers of Ta=4000 and Pr=0.71, respectively. The Nusselt number and the torque coefficient had similar trend to each other with the increase of Re. They decreased by 25% for the change of Re from 0 to 1000 and were nearly constant for the change of Re from 4000 to 8000. Contribution of the advection, turbulent transport and diffusion terms to the Nusselt number and the torque coefficient were evaluated by using the equations proposed by the authors. The contribution of the advection term was nearly zero for Re from 500 to 8000, which was contrary to the case without through-flow (Re=0). As Re increased, the contribution of the turbulent transport term decreased but that of the diffusion term did not change so much. The friction factor in the axial direction varied as Re -0.75 of which power was between laminar (Re -1 ) and turbulent (Re -0.25 ) correlations in a smooth stationary pipe flow.

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Convective Heat Transfer of the Rotational and Axial Flow between Two Concentric Cylinders

Cited by 87 publications

References 0 publications

A review of heat transfer between concentric rotating cylinders with or without axial flow

A review of heat transfer between concentric rotating cylinders with or without axial flow

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

Through-flow effects on Nusselt number and torque coefficient in Taylor-Couette-Poiseuille flow investigated by large eddy simulation

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