ABSTRACT

This study presents the steady-state numerical investigation of an asymmetrically heated 2D rectangular solar air heater duct with in-line arranged circular suspended cylinders as transverse vortex generators. In the geometrical configurations of the cylinders, blockage ratio (d/H), clearance ratio (c/d), and relative longitudinal pitch ratio (P/d) are varied as 0.20–0.32, 0.4–1.0, and 07–20, respectively, at Reynolds number 10000 to study their effect on the thermal hydraulic performance of the SAH-duct. The space averaged heat transfer and fluid flow properties are discussed through graphical illustrations and contour plots, which give the optimum geometrical configuration of the suspended cylinders.