Enhancement of heat transfer around a triangular cylinder by using single winglet

Abstract

The present work concerns the study of numerical analysis on heat transfer around a triangular cylinder with using single winglet behind the triangle cylinder under constant temp. condition at low Reynold’s number. The horizontal and vertical distance between winglet and cylinder was change as (s/b = 0.2, 0.3, 0.4, 0.5) and (d/b = 0.6, 0.7, 0.8, 0.9) respectively and Reynolds number range was (1 ≤ Re ≤ 25). The numerical computations are carried out using FLUENT 16.1 and Navier- Stokes, continuity and energy equations are solved by using SIMPL method with appropriate boundary conditions. The results showed that the using of a winglet had a significant effect on improving the heat transfer process of the triangular cylinder. Where heat transfer enhanced by (5 % – 15 %) when compared with bare cylinder and vertex facing the flow of triangular cylinder.