Paper presented at the 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 1-4 July, 2007.
This paper presents an assessment of a novel technique that
further enhances the heat transfer potential of a single
impinging jet. The method entails a geometrical modification
to the jet impingement surface wherein the jet is directed into a
cylindrical cavity located coaxially beneath the jet orifice.
A numerical study is performed to examine the parametric
influence on heat dissipation and flow characteristics of this
modified jet impingement process. The results indicate a very
significant increase in heat transfer, which is primarily
dependent on cavity depth and jet Reynolds number.