Fluid Dynamics in Earth and Planetary Sciences (FDEPS) 6th FDEPS workshop Dec 6 - Dec 9, 2004 Kansai Seminar House
講義の 要旨 とキーワード:
R-B convection, D-D convection, Plumes, Melting, Solidification, Low Reynolds number gravity currents, High Reynolds number gravity currents, Flow in porous media, Explosive volcanic eruptions.
"We will present a study of initially vertical cylinders of granular material collapsing over a horizontal base. We describe the spreading in different regimes of the aspect ratio a=h_i/r_i, where the initial cylinder of material has radius or length r_i and height h_i. The motion is described by the same scaling relationships for all materials, independent of internal friction due to interactions between grains. Only at the end of flow, when there is an abrupt halt, is internal friction important."