... solver, Fluent. To account for the rarefaction effects Maxwell's slip velocity and temperature jump equations, as shown below, were employed. User-defined functions were used to input these equations to the solver. Subsequent to each flow iteration, the predefined functions for slip wall shear stress...

... flow subsonic flow slip flow microchannels noncircular Poiseuille number compressibility rarefaction incompressible flow criterion pressure drop The small length scales commonly encountered in microfluidic devices suggest that rarefaction and compressibility effects are important...