Maxwell and Cattaneo's Time-Delay Ideas Applied to Shockwaves and the   Rayleigh-Benard Problem
  We apply Maxwell and Cattaneo's relaxation approaches to the analysis of strong shockwaves in a two-dimensional viscous heat-conducting fluid. Good agreement results for reasonable values of Maxwell's relaxation times. Instability results if the viscous relaxation time is too large. These relaxation terms have negligible effects on slower-paced subsonic problems, as is shown here for two-roll and four-roll Rayleigh-Benard flows. 
Francisco J. Uribe, Wm. G. Hoover, and Carol G. Hoover
physics.flu-dyn