A Systematic Approach for Optimal Positioning of Heated Side Walls in a Side Vented Open Cavity Under Natural Convection and Surface Radiation

Abstract

A systematic approach for the optimal positioning of multiple isothermal heat sources mounted on the walls of a side vented open cavity filled with natural air (Pr = 0.70) under natural convection and surface radiation is discussed. A numerical investigation is performed for the different possible cases with the two isothermal heat sources of equal dimensions mounted on the walls of the cavity. The geometrical parameters like the aspect ratio (A = 2), side vent ratio (W1 = 0.50) and side port ratio (W2 = 0.50) along with the most pertinent parameters like Rayleigh Number (10 4 ≤ Ra ≤ 10 7 ) and the surface emissivity of walls (0.05 ≤ ε ≤ 0.85) are the prime governing parameters in the different cases.

A Review on the Control Parameters of Natural Convection in Different Shaped Cavities with and without Nanofluid

“…The number of papers reviewed by these two fluids in recent years is less than before (see Table 4), and most researchers are interested in using nanofluids in the cavities. However, Gupta et al [38] studied natural convection along with the radiation of air fluid in an open cavity. They found that heat transfer near open walls is more than elsewhere.…”