A numerical prediction on the turbulent flow in closely spaced bare rod arrays by a nonlinear k− ϵ model

KB Lee, HC Jang - Nuclear engineering and design, 1997 - Elsevier
Fully developed turbulent flows in closely spaced bare rod arrays have been studied numerically
by using a nonlinear κ−ϵ model. This model permits inequality of the Reynolds normal …

Hydrodynamic models and correlations for bare and wire-wrapped hexagonal rod bundles—bundle friction factors, subchannel friction factors and mixing parameters

SK Cheng, NE Todreas - Nuclear engineering and design, 1986 - Elsevier
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 …

Experimental and analytical study of axial turbulent flows in an interior subchannel of a bare rod bundle

P Carajilescov, NE Todreas - 1976 - asmedigitalcollection.asme.org
… is applied to an interior subchannel of a bare rod bundle with smooth rods (see Fig. 1). Some
… an interior subchannel of a bare rod bundle with triangular array with P/D = 1.123 and L/DH …

Numerical prediction of flow and heat transfer in a loosely spaced bare rod bundle

A Shams, B Mikuž, F Roelofs - International Journal of Heat and Fluid Flow, 2018 - Elsevier
… In the present paper, a wall-resolved LES is performed for a loosely packed bare rod bundle
in an infinite array with P/D = 1.32, which corresponds to the ALFRED design (Alemberti et al…

Investigation on the applicability of turbulent-Prandtl-number models in bare rod bundles for heavy liquid metals

Z Ge, J Liu, P Zhao, X Nie, M Ye - Nuclear Engineering and Design, 2017 - Elsevier
… In this paper, the effect of different turbulent-Prandtl-number models on heat transfer in bare
rod bundles for liquid metals is investigated. Both global and local Pr t models were taken …

[HTML][HTML] Numerical study of low Pr flow in a bare 19-rod bundle based on an advanced turbulent heat transfer model

X Li, X Su, L Gu, L Zhang, X Sheng - Frontiers in Energy Research, 2022 - frontiersin.org
… In the present study, a bare 19-rod bundle with a fully developed turbulent LBE flow is …
section of the bare 19-rod bundle. Since the cross-flow in the bare 19-rod bundle is negligible and …

Towards the Direct Numerical Simulation of a closely-spaced bare rod bundle

A Shams, T Kwiatkowski - Annals of Nuclear Energy, 2018 - Elsevier
… a numerical experiment for a closely-spaced bare rod bundle in order to perform a DNS, …
well-known Hooper experiment, which contains a bare rod bundle with pitch-to-diameter ratio of …

Single phase transport within bare rod arrays at laminar, transition and turbulent flow conditions

H Ramm, K Johannsen, NE Todreas - Nuclear Engineering and Design, 1974 - Elsevier
… fully developed conditions in bare rod bundles. Nevertheless… and heat transfer in rod
bundles has been extended to … oped hydrodynamic behavior in a rod bundle array of infinite …

Turbulent interchange in triangular array bare rod bundles

JM Kelly, NE Todreas - International Heat Transfer Conference …, 1978 - dl.begellhouse.com
… phase water flows in a six channel simulated rod bundle with a pitch to diameter ratio of 1.10…
Rogers and Tahir (2) have compiled the bare rod triangular array mixing data and proposed …

Direct numerical simulation of the flow in a bare rod bundle at different Prandtl numbers

JK Lai, G Busco, E Merzari… - Journal of Heat …, 2019 - asmedigitalcollection.asme.org
… for liquid metal bare rod bundles, by first considering a heated tube and then flow around
a rod within an annular cavity. Using this information, a triangular and square rod bundle is …