The limits of granular hydrodynamics are explored in the context of the one-dimensional granular system introduced by Du, Li, and Kadanoff [Phys. Rev. Lett. 74, 1268 (1995)]. The density profile of the characteristic steady state, in which a single particle commutes between the driving wall and a dense cluster, is well captured by a hydrodynamic description provided that the finite size of the particles is incorporated. The temperature, however, is not well described: since all energy exchange is located at the border of the cluster, it is precisely for this quantity that the continuum approach breaks down.
|Number of pages||7|
|Journal||Physical review E: Statistical, nonlinear, and soft matter physics|
|Publication status||Published - 2009|
Eshuis, P., van der Weele, K., Calzavarini, E., Lohse, D., & van der Meer, D. (2009). Exploring the limits of granular hydrodynamics: A horizontal array of inelastic particles. Physical review E: Statistical, nonlinear, and soft matter physics, 80(1), . https://doi.org/10.1103/PhysRevE.80.011302