Paper Titles in Periodical
International Letters of Chemistry, Physics and Astronomy
Volume 64

Subscribe

Subscribe to our Newsletter and get informed about new publication regulary and special discounts for subscribers!

ILCPA > Volume 64 > Impact of Square Fuel Assemblies Arrangement on...
< Back to Volume

Impact of Square Fuel Assemblies Arrangement on Fluid Flow and Heat Transfer Enhancement inside Water Filled Enclosures

Full Text PDF

Abstract:

Through this paper, the hydrodynamic and thermal characteristics of a Newtonian fluid within a square cold enclosure containing four inner heaters, arranged in different manners, are numerically investigated. To do so, a developed computer code based on the finite volume method and the SIMPLER algorithm is used. The validity of the latter was ascertained after the comparison between the obtained results and the experimental and numerical ones already available in the literature. To make clear the effect of pertinent parameters such the Rayleigh number and the distance between these heaters, the phenomenon was reported by means of Streamlines, Isotherm plots, velocity and temperature profiles, with a special attention to the local and average Nusselt number evolution. As shown in the latter, taking into account the heaters’ arrangement into the enclosure leads to a significant improvement of the overall transfer. Consequently, powerful correlations predicting the heat transfer ratio into the cold square as a function of the heaters’ disposition are proposed which predict within ±1% the numerical results.

Info:

Periodical:
International Letters of Chemistry, Physics and Astronomy (Volume 64)
Pages:
144-158
Citation:
K. Ragui et al., "Impact of Square Fuel Assemblies Arrangement on Fluid Flow and Heat Transfer Enhancement inside Water Filled Enclosures", International Letters of Chemistry, Physics and Astronomy, Vol. 64, pp. 144-158, 2016
Online since:
Feb 2016
Export:
Distribution:
References:

[1] K.E. Torrance, L. Orloff, J.A. Rocket, Experiments on natural convection in enclosures with localized heating from below, J. Fluid Mech. 36 (1969) 21-31.

[2] G. De Vahl Davis, Natural convection of air in a square cavity: a benchmark numerical solution, Int. J. Num. Meth. Fluids 03 (1983) 249-264.

[3] G. Barakos, E. Mitsoulis, Natural convection flow in a square cavity revisited: laminar and turbulent models with wall functions, Int. J. Nume. Meth Fluids 18 (1994) 695-719.

[4] K.T. Yang, Natural convection in enclosures, Handbook of Single Phase Convection Heat Transfer, Wiley, New York (1987).

[5] F. Corvaro, M. Paroncini, An experimental study of natural convection in a differentially heated cavity through a 2D-PIV system, Int. J. Heat Mass Transf. 52 (2009) 355-365.

[6] P. Bhave, A. Narasimhan, D.A.S. Rees, Natural convection heat transfer enhancement using adiabatic block: optimal block size and Prandtl number effect, Int. J. Heat Mass Transf. 49 (2006) 07-18.

[7] J.R. Lee, M.Y. Ha, Numerical simulation of natural convection in a horizontal enclosure with a heat generating conducting body, Int. J. Heat Mass Transf. 49 (2006) 2684-2702.

[8] H.F. Oztop, E. Bilgen, Natural convection in differentially heated and partially divided square cavities with internal heat generation, Int. J. Heat Fluid Flow 27 (2006) 466-475.

[9] A. Abdallah, K. Khalil, P. Ioan, Buoyancy-induced flow and heat transfer in a partially divided square enclosure, Int. J. Heat Mass Transf. 52 (2009) 3818-3828.

[10] O. Laguerre, S. Benamara, D. Remy, D. Flick, Experimental and numerical study of heat and moisture transfer by natural convection in a cavity filled with solid obstacles, Int. J. Heat Mass Transf. 52 (2009) 5691-5700.

[11] S. Hua, C. Eric, L. Guy, Effect of surface radiation on the breakdown of steady natural convection flows in a square air-filled cavity containing a centered inner body, Appl. Ther. Eng. 31 (2011) 1252-1262.

[12] K.S. Mushatet, Simulation of laminar natural convection in a cavity with cylindrical obstacles. Aust. J. Basic Appl. Sci. 05 (2011) 636-645.

[13] K. Ragui, Natural convection heat transfer in a differentially heated enclosure with adiabatic partitions and filled with a Bingham fluid, Heat Transf. Res. 46 (08) (2015) 765-783.

[14] M. Bouafia, O. Daube, Natural convection for large temperature gradients around a square solid body within a rectangular cavity, Int. J. Heat Mass Transf. 50 (2007) 3599-3615.

[15] M.Y. Ha, M.J. Jung, A numerical study on three-dimensional conjugate heat transfer of natural convection and conduction in a differentially heated cubic enclosure with a heat-generating cubic conducting body. Int. J. Heat Mass Transf. 43 (2000).

[16] I. Dagtekin, H.F. Oztop, Natural convection heat transfer by heated partitions within enclosure, Int. Commun. Heat Mass Transf. 40 (2001) 823-834.

[17] F. Ampofo, Turbulent natural convection of air in a non-partitioned or partitioned cavity with differentially heated vertical and conducting horizontal walls, Exper. Thermal Fluid Sci. 29 (2005) 137-157.

[18] A. Amine, J.K. Platten, M. Hasnaoui, Thermal convection around obstacles: the case of Sierpinski carpets, Exp. Fluids 36 (2004) 717-727.

[19] A. Raji, M. Hasnaoui, M. Naïmi, K. Slimani, M.T. Ouazzani, Effect of the subdivision of an obstacle on the natural convection heat transfer in a square cavity, Comp. Fluids 68 (2012) 01-15.

[20] .T. Zhang, D. Che, Double MRT thermal lattice Boltzmann simulation for MHD naturalconvection of nanofluids in an inclined cavity with four square heat sources, Int. J. Heat Mass Transf. 94 (2016) 87-100.

[21] A. Bejan, Convection heat transfer, John Wiley and Sons. Inc. Hoboken, New jersey (2004).

[22] S.V. Patankar, Numerical heat transfer and fluid flow, Mc Grow, New York (1980).

[23] O. Turan, N. Chakraborty, R.J. Pool, Laminar natural convection of Bingham fluid in a square enclosure with differentially heater side walls, J. Non-Newt. Fluid Mech. 165 (2010) 901-913.

[24] B. Calcagni, F. Marsili, M. Paroncini, Natural convective heat transfer in square enclosure heated from below, Appl. Thermal Eng. 25 (2005) 2522-2531.

[25] G.V. Kuznetsov, M.A. Sheremet, Numerical simulation of turbulent natural convection in a rectangular enclosure having finite thickness walls, Int. J. Heat Mass Transf. 53 (2010) 163-177.

Show More Hide