Super-Burnett solutions for Poiseuille flow

In the slip flow regime with Kn=0.1 for the force and pressure driven Poiseuille flow, Zheng [Rarefied Gas Dynamics, Vol. 23 (Whistler, Canada, 2002)] found out that the Navier-Stokes equations with slip boundary condition could give qualitative different results in the cross-stream direction from the reliable direct simulation Monte Carlo (DSMC) solution. In this Brief Communication, we are going to show that the discrepancy between the Navier-Stokes and the DSMC results can be resolved based on the simulation results of higher-order equations, such as Burnett and super-Burnett ones. (C) 2003 American Institute of Physics.