We present an analytical solution of the convectionconduction
problem, in laminar flow conditions in finite-length
flat microchannels including slip/no-slip flows, effects of rarefaction,
streamwise conduction and viscous dissipation, for prescribed
wall heat flux boundary conditions.
The solution proposed is valid for low-intermediate Peclet
values Pe ≤ 1/a, a being the microchannel aspect ratio
The analytical solution is compared with numerical solutions
obtained by means of finite-elements method (FEM Comsol 3.5
) in a wide range of Pe and a values and for different wall heat
Optimal heating protocols in the presence and in the absence
of viscous dissipation are presented.
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.