Development of an information preservation method for subsonic, micro-scale gas flows

The development of an information preservation (IP) method is described in this paper. This effort is aimed at increasing our understanding of rarefied gas behavior of subsonic, micro-scale gas flows. The IP method preserves macroscopic information of the flow in the simulated particles. It applies conservation laws for binary collisions of the particles following the movement in the DSMC method, and updates the information using the Euler equations. The IP results exhibit very low levels of statistical scatter, which helps apply the method to low speed gas flows. A difficulty in implementing the IP method is also discussed. © 2001 American Institute of Physics.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87370/2/547_1.pd