Numerical simulation of natural convective heat transfer and fluid flow around a heated cylinder inside an enclosure |
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| Authors: | D G Roychowdhury Sarit K Das T Sundararajan |
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| Institution: | (1) Core Engineering Section, Design & Technology Group Indira Gandhi Centre for Atomic Research Kalpakkam – 603 102, India, IN;(2) Mechanical Engineering Department Indian Institute of Technology Chennai – 600 036, India, IN |
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| Abstract: | A collocated, non-orthogonal grid based finite volume technique has been applied for investigating the two dimensional natural
convective flow and heat transfer around a heated cylinder kept in a square enclosure. The effects of different enclosure
wall thermal boundary conditions, fluid Prandtl number and the ratio between enclosure and cylinder dimensions (aspect ratio)
upon the flow and thermal features, have been systematically studied. It is observed that the patterns of recirculatory flow
and thermal stratification in the fluid are significantly modified, if any of these parameters is varied. The overall heat
transfer rates are also affected due to the changes in the flow and temperature patterns. The study presents useful observations
regarding the variation of local Nusselt number along each wall, for the different cases considered.
Received on 2 August 2000 / Published online: 29 November 2001 |
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