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http://dx.doi.org/10.6110/KJACR.2015.27.4.220

Numerical Analysis of Flow Distribution in the Scaled-down APR+ Using Two-Equation Turbulence Models  

Lee, Gong Hee (Korea Institute of Nuclear Safety)
Bang, Young Seok (Korea Institute of Nuclear Safety)
Cheong, Ae Ju (Korea Institute of Nuclear Safety)
Publication Information
Korean Journal of Air-Conditioning and Refrigeration Engineering / v.27, no.4, 2015 , pp. 220-227 More about this Journal
Abstract
Complex thermal hydraulic characteristics exist inside the reactor because the reactor internals consist of fuel assembly, internal structures and so on. In this study, to examine the effect of Reynolds-Averaged Navier-Stokes (RANS)-based two-equation turbulence models in the analysis of flow distribution inside a 1/5 scaled-down APR+, simulation was performed using the commercial computational fluid dynamics software, ANSYS CFX R.13 and the predicted results were compared with the measured data. It was concluded that reactor internal flow pattern was locally different depending on the turbulence models. In addition, the prediction accuracy of k-${\varepsilon}$ model was superior to that of other two-equation turbulence models and this model predicted the relatively uniform distribution of core inlet flow rate.
Keywords
Computational fluid dynamics; Flow similarity; Geometry modeling; Reactor internal flow; Turbulent flow;
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Times Cited By KSCI : 4  (Citation Analysis)
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