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http://dx.doi.org/10.7735/ksmte.2015.24.6.682

Validation of Turbulence Models for Analysis of a Single-Phase Turbulent Natural Convection  

Song, Ik-Joon (Department of Mechanical Engineering, The Graduate School, Seoul Nat'l Univ. of Science & Technology)
Shin, Kyung-Jin (Department of Mechanical Engineering, The Graduate School, Seoul Nat'l Univ. of Science & Technology)
Kim, Jungwoo (Department of Mechanical Engineering, The Graduate School, Seoul Nat'l Univ. of Science & Technology)
Park, Ik Kyu (Korea Atomic Energy Research Institute)
Lee, Seung-Jun (Korea Atomic Energy Research Institute)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.24, no.6, 2015 , pp. 682-686 More about this Journal
Abstract
The objective of this study is to validate the performance of the current $k-{\epsilon}$ turbulence model for a single-phase turbulent natural convection, which has been considered an important phenomenon in nuclear safety. As a result, the natural convection problems in the 2D and 3D cavities previously studied are calculated by using the ANSYS Fluent software. The present results show that the current $k-{\epsilon}$ turbulent model accounting for the buoyancy effect is in good agreement with the previous results for the natural convection problems in the 2D and 3D cavities although some improvements should be required to get better prediction.
Keywords
$k-{\epsilon}$ turbulence model; turbulent natural convection; nuclear safety; two- and three-dimensional cavities;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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1 Yoon, H. Y., Lee, J. R., Kim, H., Park, I. K., Song, C.-H., Cho, H. K., Jeong, J. J., 2014, Recent Improvements in the CUPID Code for a Multi-dimensional Two-phase Flow Analysis of Nuclear Reactor Components, Nucl. Eng. and Tech., 46:5 655-666.   DOI
2 Jeong, J. J., Yoon, H. Y., Park, I. K., Cho, H. K., Lee, H. D. 2010, Development and Preliminary Assessment of a Three-dimensional Thermal Hydraulics Code, CUPID, Nucl. Eng. and Tech., 42:3 279-296.   DOI
3 Yoon, H. Y.,. Park, I. K., Lee, Y. J., Jeong, J. J., 2009, An Unstructured SMAC Algorithm for Thermal Non-equilibrium Two-phase Flows, Int. Comm. Heat Mass Transfer, 36:1 16-24.   DOI
4 ANSYS, 2013, ANSYS Fluent Theory Guide, ANSYS, Inc.
5 Barakos, G., Mitsoluis, E., Assimacopoulos, D., 1994, Natural Convection Flow in a Square Cavity Revisited: Laminar and Turbulent Models with Wall Functions, Int. J. Numer. Meth. Fluids, 18:7 695-710.   DOI
6 Lau, G. E., Yeoh, G. H., Timchenko, V., Reizes, J. A., 2012, Application of Dynamic Global Coefficient Subgrid-scale Models to Turbulent Natural Convection in an Enclosed Tall Cavity, Phys. Fluids, 24 094105.   DOI
7 Cheesewright, R., King, K. J., Ziai, S., 1986, Experimental Data for the Validation of Computer Codes for the Prediction of Two-dimensional Buoyant Cavity Flows, ASME HTD-60, 75-81.
8 Trias, F. X., Soria, M., Oliva, A., Perez-Segarra, C. D., 2007, Direct Numerical Simulations of Two-and Three-dimensional Turbulent Natural Convection Flows in a Differentially Heated Cavity of Aspect Ratio 4, J. Fluid Mech., 586 259-293.   DOI