ON THE CORRELATION BETWEEN VORTICITY STRENGTH AND CONVECTIVE HEAT TRANSFER
PROCEEDINGS OF THE ASME INTERNATIONAL HEAT TRANSFER CONFERENCE 2010
2: CONDENSATION, CONVECTION, MELTING AND SOLIDIFICATION
Vorticity is an inherent feature of fluid flow and has an essential role in the convective heat and mass transfer. The present study aims at determining quantitatively the relationship between the streamwise vorticity flux Omega, and the convective heat transfer, characterized by Nusselt number N-u. Physical vortices are created by using a vorticity generator inserted on the wall of a heated straight channel. It is shown that the streamwise variations of Omega and Nu are related through a power law of the type Nu approximate to alpha(Omega-C-1)(beta) + C-2.