RT Journal Article ID 109ec3f27a5a4f80 A1 Sunakraneni, Soumya A1 Puliyeri, Vivek A1 Karaiyan, Arul Prakash T1 FLUID FLOW AND HEAT TRANSFER CHARACTERISTICS PAST TWO TANDEM ELLIPTIC CYLINDERS: A NUMERICAL STUDY JF Journal of Enhanced Heat Transfer JO JEH(T) YR 2018 FD 2018-08-23 VO 25 IS 4-5 SP 421 OP 441 K1 tandem elliptic cylinders K1 axis ratio K1 SUPG-FEM K1 drag coefficient K1 Strouhal number K1 Nusselt number AB In this paper, fluid flow and heat transfer characteristics are analyzed numerically for fluid flow past two elliptic cylinders arranged in a tandem manner. The numerical computation was performed using an in-house code based on the SUPG - FEM algorithm. Isothermal boundary condition is imposed on the surface of both the elliptic cylinders. Parametric studies are carried out by varying the axis ratio of the elliptic cylinders (AR = 0.5, 0.8, and 1.0) and distance between the two cylinders (L/D = 1.5, 2.0, 2.5, 3.5, and 5.0) for different Reynolds numbers (Re = 50, 100, 150, and 200). Parameters such as pressure coefficient, drag coefficient, lift coefficient, Strouhal number, and Nusselt number are calculated for all the cases. It is observed that the critical spacing ratio (distance between the cylinders at which the mean drag coefficient shows a sharp increase) of the cylinders shifts toward a lower value at Re = 200 for AR = 0.5 and 0.8. It is also found that for both the cylinders, convective heat transfer increases for elliptic cylinders with lower axis ratio (AR = 0.5 and 0.8). Finally, correlations are derived for mean drag coefficient and average Nusselt number as a function of Reynolds number, spacing ratio, and axis ratio. PB Begell House LK https://www.dl.begellhouse.com/journals/4c8f5faa331b09ea,530d8a603119e67c,109ec3f27a5a4f80.html