Performance evaluation of mixed convection in an inclined square channel with uniform temperature walls

摘要

Numerical analyses were performed for the effect of inclined angle on the mixing flow in a square channel with uniform temperature walls (T_w = 30 ℃) and inlet temperature (T_o = 10 ℃). Three-dimensional governing equations were solved numerically for Re = 100, Pr = 0.72 and various inclined angles (from -90° to 90°). Three-dimensional behavior of fluid in a channel was examined for each angle. Thermal performance was evaluated using the relationship between Nusselt number ratio and pressure loss ratio with and without buoyancy induced flow as a parameter of inclined angles. High heat transfer and low pressure loss region was from -15° to -60° in thermal performance using mean Nusselt number ratio.