Abstract: Theoretical investigations are performed on the developed laminar convective heat transfer characteristics for incompressible gases flow through rectangular micropassages with constant wall heat flux. Mathematical models are proposed for considering the change in thermal conductivity of gas in the wall – adjacent region from the kinetic theory. The dimensionless temperature distribution and corresponding heat transfer characteristics were both simulated numerically, and the results are compared to other report simulations with brief discussions.

Key words: Convective heat transfer for gas laminar flow, Numerical simulation, Rectangular microchannels