NUMERICAL ANALYSIS OF UNSTEADY THERMOSOLUTAL CONVECTION OVER A HORIZONTAL ISOTHERMAL CIRCULAR CYLINDER

Abstract

The aim of the present article is to clarify the nature of interaction between thermal and solutal buoyancy for flow over a horizontal, isothermal, circular cylinder. In a range of values of the buoyancy ratio N (defined as the ratio of solutal to thermal Grashof numbers) an interesting “biptume” solution has been obtained in which an upward thermally driven flow coexists with a solutally driven downward flow. The problem has been studied for air-naphthalene (Lewis number Le = 3.57) and water-salt (Le = 100) binary systems.

Notes

Address correspondence to Dr. Roop L. Mahajan, Department of Mechanical Engineering, Engineering Center, Campus Box 427, University of Colorado at Boulder, Boulder CO 80309–0427, USA.