Numerical analysis and optimization flow around array of heated semi-circular fins

Abstract

Heat transfer through natural convection from semicircular fin array is investigated numerically by using CFD software. The effect of heat input and fin parameter (fin length, height, thickness, and spacing) on semicircular fin has been discussed. From analysis of the results in the semicircular fin using regression analysis, analysis of variance (ANOVA), conceptual signal-noise (S/N) ratio approach, and Taguchi optimization method, it is noticed that fin thickness and length are more dominant to maximize Nua/wt ratio while fin spacing and fin height are less dominant. Thus optimum combination is A1 (1500 mm) B1 (1) C2 (10 mm) D1 (1 mm) of L16 array table. For maximizing the ha, fin spacing is more dominant than other parameter. The optimum combination is A3 (1500 mm) B1 (1) C1 (10 mm) D3 (2.5 mm) of L16 array table. Fin length and spacing are significant for minimizing the average temperature of fin. Optimum combination is A2 (1500 mm) B2 (2) C1 (20 mm) D1 (1 mm) L16 array table.