URANS simulation of the turbulent flow in tight lattice bundle
Received date: 21 Jun 2011
Accepted date: 30 Jul 2011
Published date: 05 Dec 2011
Copyright
The flow structure in tight lattice is still of great interest to nuclear industry. An accurate prediction of flow parameter in subchannels of tight lattice is likable. Unsteady Reynolds averaged Navier Stokes (URANS) is a promising approach to achieve this goal. The implementation of URANS approach will be validated by comparing computational results with the experimental data of Krauss. In this paper, the turbulent flow with different Reynolds number (5000–215000) and different pitch-to-diameter(P/D) (1.005–1.2) are simulated with computational fluid dynamics (CFD) code CFX12. The effects of the Reynolds number and the bundle geometry (P/D) on wall shear stress, turbulent kinetic energy, turbulent mixing and large scale coherent structure in tight lattice are analyzed in details. It is hoped that the present work will contribute to the understanding of these important flow phenomena and facilitate the prediction and design of rod bundles.
Yiqi YU , Yanhua YANG . URANS simulation of the turbulent flow in tight lattice bundle[J]. Frontiers in Energy, 2011 , 5(4) : 404 -411 . DOI: 10.1007/s11708-011-0165-7
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