... and numerical results are compared with the published results by Shah [ 5 ] and Saha et al. [ 7 ] for H1 and H2 boundary conditions for rhombic channels of side angle ( α ) = 30 deg, which is an approximation of the present side angle ( α avg = 29 ∘ 9 ′ 40 ″ ) , as Nu avg...

... . Heat transfer effects in the entrance region of microchannel are presented by plotting average Nusselt number as a function of nondimensional axial length x*. The numerical simulations with both circumferential and axial uniform heat flux (H2) boundary conditions are validated for existing data set...