Anomalous distribution functions in sheared suspensions

J. Harting, H. J. Herrmann, E. Ben-Naim
2008 Europhysics letters  
We investigate velocity probability distribution functions (PDF) of sheared hard-sphere suspensions. As observed in our Stokes flow simulations and explained by our single-particle theory, these PDFs can show pronounced deviations from a Maxwell-Boltzmann distribution. The PDFs are symmetric around zero velocity and show a Gaussian core and exponential tails over more than six orders of magnitude of probability. Following the excellent agreement of our theory and simulation data, we demonstrate
more » ... ata, we demonstrate that the distribution functions scale with the shear rate, the particle volume concentration, as well as the fluid viscosity.
doi:10.1209/0295-5075/83/30001 fatcat:34wvdnns5vfezdb6u5od333ts4