Heat transfer and entropy generation for forced convection through a microduct of rectangular cross-section: Effects of velocity slip, temperature jump, and duct geometry

This work presents numerical solutions for fully developed velocity, temperature, and entropy generation distribution due to forced convection in microelectromechanical systems (MEMS) in the Slip-flow regime, for which the Knudsen number lies within the range 0.001 < Kn < 0.1. Invoking the temperature jump equation, the H1 boundary condition is investigated. It was observed that some of the previous reports in the literature can be misleading and lead to erroneous results specially when it comes to Second Law (of Thermodynamics) aspects of the problem. The results can be generalized to the macroscale counterparts by letting Kn = 0.