CFD ANALYSIS OF CROSS•BUOYANCY MIXED CONVECTION FROM AN ASYMMETRICALLY CONFINED HEATED CYLINDER

Abstract

Mixed convection flow and heat transfer under the influence of cross buoyancy on asymmetrically confined heated circular cylinder in a horizontal channel has been studied. The influence of asymmetric confinement over the bluff body submerged in air like Newtonian fluid has been investigated. Due to the off-centre position of the cylinder, there is RI a net lift force acting on it in addition to the drag force. Whole study has been performed for the following parameter ranges: Richardson number, Ri = 0, 1, 2; Reynolds number, Re = 50, 100, 150; power-law index, n = 1; Prandtl number, Pr = 0.7; blockage ratio, 0 = 0.2, 0.3 and 0.4, and gap ratio, 0.25 :5 y < 1. Drag and lift coefficients, and Nusselt number are calculated for the above conditions.