Mohamed S. El-Genk
Institute for Space and Nuclear Power Studies; Mechanical Engineering Department; Nuclear Engineering Department, Chemical & Biological Engineering Dept., University of New Mexico, Albuquerque, New Mexico, 87131 USA
The University of New Mexico, MSC01 1120, 1 University of New Mexico Albuquerque NM 87131-0001, USA
Investigated is the effect of slip on the friction number for water flow in microchannels with different Dh and aspect ratio, α. An analytical expression for the friction number in microchannels with a slip at the wall is derived from the solution of the Navier-Stokes equations. In addition, CFD numerical analyses are performed and the results are compared to those of the analytical solution and the reported experimental values obtained from pressure losses measurements. The friction numbers obtained from CFD calculations of the pressure losses in microchannels are in excellent agreement with both the experimental and the analytical results.