Journal ArticleDOI
Hydrodynamic models and correlations for bare and wire-wrapped hexagonal rod bundles — Bundle friction factors, subchannel friction factors and mixing parameters
Shih-Kuei Cheng,Neil E. Todreas +1 more
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TLDR
In this article, consistent hydrodynamic models for subchannel friction factors and mixing parameters in wire-wrapped rod bundles have been developed for use in subchannel analysis codes, both flow regime and geometry effects are taken into account in these models.About:
This article is published in Nuclear Engineering and Design.The article was published on 1986-04-01. It has received 317 citations till now. The article focuses on the topics: Laminar flow & Turbulence.read more
Citations
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The structure of turbulence in rod bundles and the implications on natural mixing between the subchannels
TL;DR: In this article, the main features of the structure of turbulence in subchannels of rod bundles are discussed and a simple correlation of a mixing factor is developed which may be used as a good approximation for any gap geometry.
Journal ArticleDOI
Some thermal hydraulic challenges in sodium cooled fast reactors
TL;DR: In this article, the main thermal hydraulic challenges in sodium cooled fast reactors, on the basis of the past experience, are summarized and compared using numerical and experimental tools used in the French Atomic Energy Commission (CEA).
Journal ArticleDOI
Evaluation of existing correlations for the prediction of pressure drop in wire-wrapped hexagonal array pin bundles
TL;DR: In this article, the authors evaluated wire-wrapped fuel bundle friction factor correlations to identify their comparative fit to the available pressure drop experimental data and found that the detailed Cheng and Todreas correlation yielded the best fit.
Journal ArticleDOI
CFD investigation of helical wire-wrapped 7-pin fuel bundle and the challenges in modeling full scale 217 pin bundle
TL;DR: In this article, the effect of transverse flow in promoting flow and temperature uniformity in a heat generating fuel pin bundle with helically wound spacer wire has been investigated by solving the three-dimensional conservation equations of mass, momentum and energy, for a wide range of Reynolds number.
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Experimental study of heavy-liquid metal (LBE) flow and heat transfer along a hexagonal 19-rod bundle with wire spacers
TL;DR: In this paper, a 19-pin hexagonal rod bundle with wire spacers, cooled by forced-convective LBE was completed at the Karlsruhe Liquid Metal Laboratory (KALLA).
References
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Journal ArticleDOI
Pressure Drop Correlations for Fuel Element Spacers
TL;DR: An accurate prediction of the hydraulic losses in multi-rod fuel bundles is necessary for reactor design calculations as discussed by the authors, and the relationship of the pressure drop at the spacers is important for these calcul...
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Simple method of predicting friction factors of turbulent flow in non-circular channels
TL;DR: In this article, a method is developed which allows the prediction of friction factors for turbulent flow in non-circular channels if only the geometry factor of the pressure drop relationship for laminar flow is known.
Journal ArticleDOI
Laminar, Transition, and Turbulent Parallel Flow Pressure Drop Across Wire-Wrap-Spaced Rod Bundles
TL;DR: In this article, the laminar, transition and turbulent parallel flow pressure drop across wire-wrapped hexagonal rod bundles positioned inside a duct were determined in tests using water, sodium, and air.
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Pressure drop and velocity distribution in rod bundles with spacer grids
TL;DR: In this article, experimental data and analysis of the pressure drop of turbulent flow through rod bundles is presented. But the authors focus on laminar flow and do not consider the effect of spacer grids on the velocity distribution.