T emperature, c <strong>Arab</strong> <strong>Journal</strong> Of <strong>Nuclear</strong> Science And <strong>Applications</strong>, 46(2), (276-286) 2013 160 140 120 100 80 60 40 20 0 P ower 100% 0 0. 1 0. 2 0. 3 0. 4 0. 5 0. 6 Dista nc e from bottom, m 285 Measur ed SST- Si mul at ed Fig. 8. The comparison between measured inner clad surface temperatures <strong>and</strong> simulated. Fig. 9. the axial average temperature variations at the surface <strong>of</strong> the heating element, <strong>and</strong> at the clad inner <strong>and</strong> outer surfaces
<strong>Arab</strong> <strong>Journal</strong> Of <strong>Nuclear</strong> Science And <strong>Applications</strong>, 46(2), (276-286) 2013 Fig. 10. Velocity vector field at the plane z = 0.125 REFERENCE k turbulence models in the simulation <strong>of</strong> LWR fuel-bundle 1- Tzanos, C. 2001, Performance <strong>of</strong> flows, Trans. ANS 84, pp. 197-199. 2- Rapley, C.W., <strong>and</strong> Gosman, A.D., 1986, The prediction <strong>of</strong> fully developed axial turbulent flow in rod bundles, <strong>Nuclear</strong> Engineering <strong>and</strong> Design, 97, pp. 313-325. 3- Baglietto, E., <strong>and</strong> Ninokata, H., 2005, A turbulence model study for simulating flow inside tight lattice rod bundles. <strong>Nuclear</strong> Engineering <strong>and</strong> Design, 235, pp. 773-784. 4- Chang, D., <strong>and</strong> Tavoularis, S., 2007, Numerical simulation <strong>of</strong> turbulent flow in a 37- rod bundle, <strong>Nuclear</strong> Engineering <strong>and</strong> Design, 237, pp 575-590. 5- Toth, S. <strong>and</strong> Aszodi, A., 2008, CFD analysis <strong>of</strong> flow field in a triangular rod bundle, <strong>Nuclear</strong> Engineering <strong>and</strong> Design, 6- Chang, D., <strong>and</strong> Tavoularis, S., 2005, Unsteady numerical Simulation <strong>of</strong> turbulence <strong>and</strong> coherent structures in axial flow near narrow gap. J. fluid Engineering, 127, pp 458-466. 7- Guellouz. M, <strong>and</strong> Tavoularis, S., 2000, The structure <strong>of</strong> turbulent flow in rectangular channel contaning a cylindrical rod- part 1. Renolds averaged measurements, Exp. Thermal fluids, 23, pp 59- 73. 8- Pope, S., 2000, Turbulent flows, Cambridge university pres. 9- Chang, D., <strong>and</strong> Tavoularis, S., 2008, Simulation <strong>of</strong> turbulence, heat transfer <strong>and</strong> mixing across narrow gaps between rod-bundle subchannel, <strong>Nuclear</strong> Engineering <strong>and</strong> Design, 238, pp 109-123. 10- Kader, B.A., 1981, Temperature <strong>and</strong> concentration pr<strong>of</strong>iles in fully turbulent boundary layers, Int. J. Heat Mass Transfer 24, 1541-1544. 286