Forced convection heat transfer enrichment of geometrically customized circular cylinder: A numerical approach

Abstract

A two-dimensional, laminar, and incompressible flow over a modified geometry with hyperbolic front and rear segment has been numerically studied. The main motive is to optimize the geometry by varying the frontal and rear lengths by analyzing the flow and heat transfer offered by the new geometry. The new profile requires minimum material for manufacturing and hence lowers the initial investment for materializing the product. The design is most suitable for electronic components in confined cabinets. The hyperbolic front improves heat transfer due to its heat transferring slant height and the rear segment improves shedding downstream. The results obtained are presented and analyzed using pressure and temperature contours and quantities such as drag coefficients, pressure drop, Strouhal number, and Nusselt number. From the results obtained the geometry with maximum frontal length and rear length of 0.5d dissipated 5.78% more heat as compared to that of circular cylinder. Also, the geometry with maximum frontal length and rear length of 0.1d improves heat transfer by 12.4% thereby drastically reducing the manufacturing material.