2002/04/02 by Thorsten Poeschel, Thomas Schwager
Physics and Astronomy · #cond-mat.mtrl-sci #cond-mat.dis-nn
published as In: H.J.Herrmann, J.-P. Hovi, and S.Luding (eds): ``Physics of Dry Granular Materials'', Kluwer (Dortrecht, 1998), p.625 · 7 pages, 1 figure
arxiv created 2002/04/02 · arxiv updated 2009/11/30
Suppose granular material is shaken vertically with z(t)=A0 cos(ω0 t). Can we expect to find convection if A0ω02 < g? By means of theoretical analysis and computer simulation we find that there is no critical Γ=|A0|ω02/g for the onset of convection. Instead we propose a modified criterion which coincides with Γ=1 for small frequency ω0.