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http://dx.doi.org/10.5516/NET.2009.41.7.893

DEVELOPMENT OF AN LES METHODOLOGY FOR COMPLEX GEOMETRIES  

Merzari, Elia (Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology)
Ninokata, Hisashi (Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology)
Publication Information
Nuclear Engineering and Technology / v.41, no.7, 2009 , pp. 893-906 More about this Journal
Abstract
The present work presents the development of a Large Eddy Simulation (LES) methodology viable for complex geometries and suitable for the simulation of rod-bundles. The use of LES and Direct Numerical Simulation (DNS) allows for a deeper analysis of the flow field and the use of stochastical tools in order to obtain additional insight into rod-bundle hydrodynamics. Moreover, traditional steady-state CFD simulations fail to accurately predict distributions of velocity and temperature in rod-bundles when the pitch (P) to diameter (D) ratio P/D is smaller than 1.1 for triangular lattices of cylindrical pins. This deficiency is considered to be due to the failure to predict large-scale coherent structures in the region of the gap. The main features of the code include multi-block capability and the use of the fractional step algorithm. As a Sub-Grid-Scale (SGS) model, a Dynamic Smagorinsky model has been used. The code has been tested on plane channel flow and the flow in annular ducts. The results are in excellent agreement with experiments and previous calculations.
Keywords
LES; CFD; Complex Geometries;
Citations & Related Records

Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 2
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1 C. Meneveau and J. Katz, “Scale invariance and turbulence models for large-eddy simulation”, Annu. Rev.Flu. Mech., Vol. 32, 1-32 (2000)   DOI   ScienceOn
2 N. Kasagi, K. Horiuti, Y. Miyake, T. Miyauchi and Y. Nagano, “Establishment of the Direct Numerical Simulation Data Bases of Turbulent Transport Phenomena”- http://www.thtlab.t.u-tokyo.ac.jp/
3 S.A. Jordan, “A Large Eddy simulation methodology in generalized curvilinear coordinates”, Journal of Computational Physics, Vol. 148, 322-340 (1999)   DOI   ScienceOn
4 M. Germano, U. Piomelli and P. Moin, “A dynamic subgridscale eddy viscosity model”, Phys. Fluids A., Vol. 3, 1760 (1991)   DOI
5 E. Merzari and H. Ninokata, “Test for Large Eddy Simulation Sub-Grid Scale Models for flows in annular channels”, ICAPP 2007, Nice -France (2007)
6 T. Misawa, “Development of a numerical experimental method for the evaluation of the thermal-hydraulic design of fuel with high conversion ratio”, PhD thesis-Tokyo Institute of Technology (2004)
7 P.J. Schmid and D.S. Henningson, “Stability and Transition in Shear Flows”, Springer (2001)
8 J.M. Nouri, H. Umur and J.H. Whitelaw, “Flow of Newtonian and non-Newtonian fluids in concentric and eccentric annuli”, Journal of Fluid Mechanics, Vol. 253, pp. 617-64, (1993)   DOI   ScienceOn
9 S. B. Pope, Turbulent Flows, Cambridge University Press, 2000
10 T. F. Chan and T. P. Mathew, "Domain Decomposition Algorithms", Acta Numerica, pp. 61-143 (1994)
11 S. Y. Chung, G. H. Rhee and H. J. Sung, “Direct numerical simulation of turbulent concentric annular pipe flow, Part 1: Flow field”, International Journal of Heat and Fluid Flow, Vol. 23, pp. 426-440 (2002)   DOI   ScienceOn
12 S.H.Lee, P. Jenny and H.A. Tchelepi, “A finite-volume method with hexahedral multiblock grids for modeling flows in porus media”, Computational Geo-sciencies, Vol. 6, pp. 353-379 (2002)   DOI
13 H. Ha Minh, “La Mod$\acute{e}$lisation Statistique de la Turbulence: Ses Capacit$\acute{e}$s et ses Limitations”, Comptes rendu de l'Academie des Sciences, Vol. 327, n. 4, pp.343-358 (1999)
14 N.V. Nikitin, “Direct Numerical Simulation of turbulent flows in eccentric pipes”, Computational Mathematics and Mathematical Physics, Vol.46, 509-526 (2006)   DOI
15 C. Meneveau, “Staitistics of turbulence subgrid-scales stresses: Necessary conditions and experimental tests”, Physics of Fluids, Vol. 6, 815-83, (1994)   DOI   ScienceOn
16 N. Park, J.Y. Yoo and H. Choi, “Toward Improved Consistency of a priori tests with a posteriori tests in large eddy simulation” , Physics of Fluids, Vol. 17 (2005)   DOI   ScienceOn
17 S.A. Jordan, “Dynamic Subgrid-Scale Modeling for Large- Eddy Simulations in Complex Topologies”, Journal of Fluids Engineering, Vol. 123, 3, 619-627 (2001)   DOI
18 E. Merzari and H.Ninokata, “Proper Orthogonal Decomposition of the Flow in a Rod-Bundle”, Proceedings of NURETH-13, Sept. $27^{th}$-Oct. $2^{nd}$ 2009, Kanazawa, Japan
19 E. Merzari and H. Ninokata, “Unsteady Reynolds averaged Navier-Stokes simulation for an accurate prediction of the flow inside tight rod bundles”, $12^{th}$ NURETH, Pittsburgh - USA (2007)
20 D.R. Fokkema, G.L. Sleijpen and H.A .Van der Vorst, “Generalized Conjugate Gradient Square”, Journal of Computational and Applied Mathematics (1996)
21 E. Merzari and H.Ninokata, “Anisotropy and Coherent Structures for the flow in Annular Channels”, Flow, Turbulence and Combustion, Vol. 82, pp. 93-120 (2009)   DOI   ScienceOn
22 J. Jim$\acute{e}$nez and P. Moin, “The minimal flow unit in nearwall turbulence”, Journal of Fluid Mechanics, Vol. 225, pp. 213-240 (1991)   DOI
23 J. G. Berkooz, P. Holmes, J.L., Lumley, The proper orthogonal decomposition in the analisys of turbulent flow, Annual Reviews of Fluid Mechanics, 25, pp.539-575 (1993)   DOI   ScienceOn
24 U. Piomelli, ”Large Eddy Simulation: Achievements and Challenges”, Progress in Aerospace Sciences, Vol. 35, pp. 335-362 (1999)   DOI   ScienceOn
25 V. Armenio and U. Piomelli, “A Lagrangian Mixed Subgrid- Scale Model in Generalized Coordinates”, Flow, Turbulence and Combustion, Vol. 65, pp.51-81 (2000)   DOI   ScienceOn
26 Y. Zang, R.L. Street and J.R. Koseff, “A non-staggered grid, fractional step method for time-dependent incompressible Navier-Stokes equations in curvilinear coordinates”, Journal of Computational Physics, Vol. 114, 1 (1994)   DOI   ScienceOn
27 J.C. Neves, P. Moin and R.D. Moser, “Effects of convex transverse curvature on wall-bounded turbulence. Part 1. The velocity and vorticity”, J. Fluid Mechanics, Vol. 272, pp. 349-382 (1973)   DOI   ScienceOn
28 W.T. Snyder and G.A. Goldstein, “An analysis of Fully Developed Laminar Flow in an Eccentric Annulus”, A.I.Ch.E. Journal, Vol. 11, 462-467 (1965)   DOI
29 J.D. Hooper and K. Rehme, “Large-Scale structural effect in developed turbulent flows through closely-spaced rod arrays”, Journal of Fluid Mechanics, Vol. 145, pp. 305-337 (1984)   DOI   ScienceOn
30 T.S. Lund, “On the use of discrete filters for large eddy simulation”, Annual Research Briefs, Stanford University, 1997