... density Ψ sphericity ψ stream function ω vorticity Subscripts a average C cold eff effective f fluid H hot o reference value s solid Superscript   ∗ dimensional variable...

.... The governing equations in the vorticity-stream function formulation are solved by employing a polynomial-based differential quadrature method. The results show that the presence of a vertical partition has a considerable effect on the circulation intensity, and therefore, the heat transfer characteristics...