Mixed-Convection Heat Transfer to Sodium in a Vertical Pipe

Jackson, J. D.; Axcell, Brian; Walton, A.J.

doi:10.1080/08916159408946473

Cited by 28 publications

(3 citation statements)

References 19 publications

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“…Using a Dittus-Boelter type of equation for a constant property forced convection in conjunction with the variable property correction terms, Jackson [41] recently proposed another correlation for a thermally developed, variable property turbulent heat transfer: Nu Jackson ¼ 0:022Re 0:8 b Pr 0:4 b ðq w =q b Þ 0:3 ðc p =c pb Þ n n ¼ 0:4 for T b < T w < T pc ; and for 1:…”

Section: Review Of the Existing Correlation Equationsmentioning

confidence: 99%

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Bae

Kim

Kang

2010

Experimental Thermal and Fluid Science

193

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Section: Review Of the Existing Correlation Equationsmentioning

confidence: 99%

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Bae

Kim

Kang

2010

Experimental Thermal and Fluid Science

193

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“…This same effect can also greatly alter mixed convective behavior, such that a flow which would be turbulent in free convection, can be partially laminarized by the additional influence of forced convection when it is added to the problem, Inagaki (1996) and Jackson, et al(1994). In fact Kitamura and Inagaki (1987) found that on a vertical heated flat plate with forced upward water flow, the "turbulence suppression" is so great that the mixed convection heat transfer coefficient or Nusselt number can be lowered by as much as 25% compared to that from either pure forced or pure free convection with comparable parameters.…”

Section: Temuerature Deuendencementioning

confidence: 99%

Mixed-convective, conjugate heat transfer during molten salt quenching of small parts

Chenoweth¹

1997

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This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, nor any of the contractors, subcontractors, or their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specif.ic commercial product, process, or service by trade name, trademark, manufacturer, or-. >. . .. otherwise, do,es not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government, any agency thereof or any of their contractors or subcontractors. The views and opinions expressed herein do not necessarily state or reflect those of the United States Government, any agency thereof,

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“…[7], the reason could be found in the difficulties related to the experimental investigation of these fluids. To the best of the authors' knowledge the most reliable experimental data on mixed convection to liquid metals are still those of Buhr et al [8] of 1974 for mercury (Pr = 0.025) and Jackson et al [9] of 1994 for sodium (Pr = 0.005) flowing in a vertical pipe. From this latter work sodium is found to behave differently from other fluids, including mercury.…”

Section: Introductionmentioning

confidence: 99%

Large Eddy Simulation of Liquid Metal Turbulent Mixed Convection in a Vertical Concentric Annulus

Marocco

Garita

2018

Journal of Heat Transfer

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In the present study, turbulent forced and mixed convection heat transfer to a liquid metal flowing upwards in a concentric annulus is numerically investigated by means of large eddy simulation (LES). The inner-to-outer radius ratio is 0.5. The Reynolds number based on bulk velocity and hydraulic diameter is 8900, while the Prandtl number is set to a value of 0.026. A uniform and equal heat flux is applied on both walls. LES has been chosen to provide sufficiently accurate results for validating Reynolds-averaged turbulence models. Moreover, with the thermal sublayer thickness of liquid metals being much larger than the viscous hydrodynamic one, liquid metals present a separation between the turbulent thermal and hydrodynamic scales. Thus, with the same grid resolution, it is possible to perform a LES for the flow field and a “thermal” direct numerical simulation (DNS) for the temperature field. Comparison of the forced convection results with available DNS simulations shows satisfying agreement. Results for mixed convection are analyzed and the differences with respect to forced convection at the same Reynolds number are thoroughly discussed. Moreover, where possible, a comparison with air is made.

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Mixed-Convection Heat Transfer to Sodium in a Vertical Pipe

Cited by 28 publications

References 19 publications

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Forced and mixed convection heat transfer to supercritical CO2 vertically flowing in a uniformly-heated circular tube

Mixed-convective, conjugate heat transfer during molten salt quenching of small parts

Large Eddy Simulation of Liquid Metal Turbulent Mixed Convection in a Vertical Concentric Annulus

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