CFD Analysis of the Effect of Internal Plates on Natural Convection in a Sodium Filled Bottom Heated Cylindrical Enclosure

Jasmin Sudha A*, Nashine B.K**, Selvaraj P.***
A. Jasmin Sudha *  B.K. Nashine **  P. Selvaraj ***
*-*** Safety Engineering Division, FRTG, IGCAR, Kalpakkam, India.
Periodicity:May - July'2016
DOI : https://doi.org/10.26634/jfet.11.4.8112

Abstract

Natural convection in enclosures has numerous industrial applications, such as cooling of electronic equipment, emergency core cooling in nuclear reactors, and energy storage systems. A cylindrical cavity with aspect ratio (H/D) of 0.5, filled with liquid metal sodium is analyzed numerically for the natural convection setting inside the cavity due to the heated bottom side. The top of the cavity is cooled. Apart from the bottom wall heat source, there are two more plates which serve as either partitions or as additional internal heat sources in the cavity. The effect of their presence and their temperature on steady state thermal and velocity fields is evaluated in this analysis. The analysis has been carried out using the CFD (Computational Fluid Dynamics) code, PHOENICS (Parabolic Hyperbolic Or Elliptic Numerical Integration Code Series). The peak natural convective velocity is compared for different cases when the internal plates act as heat sources or as simple partial partitions inside the cylindrical enclosure. It is evident from the analysis that, natural convection is reduced inside the cavity when partial partitions are present in the cavity either in the form of heated plates or unheated plates.

Keywords

Natural Convection, Cylindrical Cavity, Distributed Heat Source, Liquid Metal Heat Transfer, CFD Analysis

How to Cite this Article?

Sudha, A.J., Nashine, B.K., and Selvaraj, P. (2016). CFD Analysis of the Effect of Internal Plates on Natural Convection in a Sodium Filled Bottom Heated Cylindrical Enclosure. i-manager’s Journal on Future Engineering and Technology, 11(4), 24-31. https://doi.org/10.26634/jfet.11.4.8112

References

[1]. Akins, R.G. and Lin, Y.S., (1986). “Transient Behaviour of Natural Convection inside a Vertical Cylinder”. Chemical Engineering Communication, Vol. 43, pp. 69-83.
[2]. Bazylak, A., Djilali, N. and D. Sinton, (2006). “Natural convection in an enclosure with distributed heat sources”. Numerical Heat Transfer, Part A, Vol. 49, pp. 655–667.
[3]. Fontana E., Silva A., and Mariani, V.C., (2011). “Natural convection in a partially open square cavity with internal heat source: An analysis of the opening mass flow”. International Journal of Heat and Mass Transfer, Vol. 54, pp. 1369–1386.
[4]. Horanyi, S., Krebs, L., and Muller, U., (1999). “Turbulent Rayleig Benard convection in low Prandtl-number fluids”. International Journal of Heat and Mass Transfer, Vol. 42, pp. 3983-4003.
[5]. Lin, W. and Armfield, S.W., (1999). “Direct simulation of natural convection cooling in a vertical circular cylinder”. International Journal of Heat and Mass Transfer, Vol. 42, pp. 4117–4130.
[6]. Lin, W. and Armfield, S.W., (2001). “Natural convection cooling of rectangular and cylindrical containers”. International Journal of Heat and Fluid Flow, Vol. 22, pp. 72–81.
[7]. Lin, W. and Armfield, S. W., (2004). “Scaling analysis and direct simulation of unsteady natural convection th cooling of fluid with Pr < 1 in a vertical cylinder”. 15 Australasian Fluid Mechanics Conference, Sydney, Australia, pp. 1-4.
[8]. Martyushev, S.G. and Sheremet, M.A., (2014). “Conjugate natural convection combined with surface thermal radiation in an air filled cavity with internal heat source”. International Journal of Thermal Sciences, Vol. 76, pp. 51-67.
[9]. Sharif, M.A.R. and Mohammad, T.R., (2005). “Natural convection in cavities with constant flux heating at the bottom wall and isothermal cooling from the sidewalls”. International Journal of Thermal Sciences, Vol. 44, pp. 865–878.
[10]. Sheriff N., and Davies N.W., (1979). “Liquid metal natural convection from plane surfaces, a review including recent sodium measurements”. Int. J. Heat Fluid Flow, Vol. 1(4), pp. 149-154.
[11]. Silva, A.K., Lorente, S. and Bejan, A., (2004). “Optimal distribution of discrete heat sources on a wall with natural convection”. International Journal of Heat and Mass Transfer, Vol. 47, pp. 203–214.
[12]. Sudha, A.J. and Velusamy, K., (2013). “Numerical analysis of natural convection in sodium plenum below the grid plate of a fast reactor during a severe accident”. Annals of Nuclear Energy, Vol. 54, pp. 120–128.
[13]. Viskanta, R., Kim, D.M. and Gau, C., (1986). “Three dimensional natural convection heat transfer of a liquid metal in a cavity”. Int. J. Heat Mass Transfer, Vol. 29, pp. 475-485.
[14]. Voronov, S.A., Kiryushin, A.I. and Kuzavkov, N.G., (1994). “Evaluation of down motion time interval of molten materials to core catcher during CDA postulated in LMFR”. Proceedings of IWGFR-89, pp. 545-551.
[15]. Wu, W. and Ching, C.Y., (2010). “Laminar natural convection in an air-filled square cavity with partitions on the top wall”. International Journal of Heat and Mass Transfer, Vol. 53, pp. 1759–1772.
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