Heat transfer enhancement in impinging jets by surface modification

Abstract

This work presents a numerical investigation of a novel technique of enhancing heat transfer from impinging fluid jets at a heated surface. In the proposed method, suitable modifications are introduced to the target surface area of the jet by attaching thermally conductive objects right beneath the impinging jet. Results indicate a significant change in fluid flow characteristics and show substantial improvement in heat transfer up to about 30% over a large range of flow regimes. Further enhancement possibilities are also examined with appropriate changes to the surface geometry.