Heat Transfer of Natural Convection in a Rectangular Cavity with Vertical Walls of Different Temperatures

Abstract

In the present study the behavior of heat transfer in a rectangular cavity with one isothermal vertical wall heated and the other cooled is investigated. Heat transfer coefficients on the vertical walls are measured for fluids with Prandtl number Pr of 3 to 40, 000 in case of aspect-ratio H/W from 5 to 47.5 and their correlated results are presented for laminar, transition and turbulent regions, respectively. It is shown that the present arrangement (Nu_H-Ra_H) using the height of cavity as a representative length may significantly by useful in the various heat transfer modes accompanied with flow patterns of them.