Numerical investigation of heat transfer in impinging axial and radial jets with superimposed swirl

Abstract

The effect of swirl on heat transfer by axial and radial laminar jets impinging on a flat plate has been investigated numerically through the solution of Navier-Stokes and energy equations. Heat transfer is reduced substantially by the superposition of swirl on axial jets. Significant enhancement in heat transfer has been observed in the case of a radial jet with superimposed swirl on it. For a swirl number of unity, the heat transfer is enhanced by 77%. Copyright © 1996 Elsevier Science Ltd.