ON THE CORRELATION BETWEEN VORTICITY STRENGTH AND CONVECTIVE HEAT TRANSFER

Authors

Charbel Habchi
Thierry Lemenand
Dominique Della Valle
Hassan Peerhossaini

Document Type

Conference Proceeding

Publication Date

2010

Journal

PROCEEDINGS OF THE ASME INTERNATIONAL HEAT TRANSFER CONFERENCE 2010

Volume

2: CONDENSATION, CONVECTION, MELTING AND SOLIDIFICATION

First Page

377

Last Page

382

Abstract

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.