A correlation for mixed convection heat transfer from converging, parallel and diverging channels with uniform volumetric heat generating plates

A numerical study of steady, laminar, mixed convection heat transfer from volumetrically heat generating converging, parallel and diverging channels is carried out. Air is considered as the working fluid. The maximum angle of deviation (ϕ) of the channel plates from the vertical position for the converging and diverging channels is 2° and − 2°, respectively. A parametric study has been carried out for a wide range of ReS, GrS⁎, γ and ϕ to investigate their effect on the fluid flow and heat transfer characteristics. A universal correlation, to estimate the non-dimensional maximum temperature occurring in the converging, parallel or diverging channels is presented.