| タイトル | Numerical experiments with flows of elongated granules |
| 本文（外部サイト） | http://hdl.handle.net/2060/19920013983 |
| 著者（英） | Elrod, Harold G.; Brewe, David E. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1992-01-01 |
| 言語 | eng |
| 内容記述 | Theory and numerical results are given for a program simulating two dimensional granular flow (1) between two infinite, counter-moving, parallel, roughened walls, and (2) for an infinitely wide slider. Each granule is simulated by a central repulsive force field ratcheted with force restitution factor to introduce dissipation. Transmission of angular momentum between particles occurs via Coulomb friction. The effect of granular hardness is explored. Gaps from 7 to 28 particle diameters are investigated, with solid fractions ranging from 0.2 to 0.9. Among features observed are: slip flow at boundaries, coagulation at high densities, and gross fluctuation in surface stress. A videotape has been prepared to demonstrate the foregoing effects. |
| NASA分類 | MECHANICAL ENGINEERING |
| レポートNO | 92N23226
NASA-TM-105567
AVSCOM-TR-91-C-006
NAS 1.15:105567
E-6891 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/127589 |
