Craters Formed in Granular Beds by Impinging Jets of Gas

Autor:	Metzger, Philip T., Latta III, Robert C., Schuler, Jason M., Immer, Christopher D.
Rok vydání:	2009
Předmět:	Condensed Matter - Soft Condensed Matter Astrophysics - Earth and Planetary Astrophysics Physics - Fluid Dynamics
Zdroj:	Powders and Grains 2009, Proc. 6th Int Conf Micromech Granul Media 1145(1), 767-770
Druh dokumentu:	Working Paper
DOI:	10.1063/1.3180041
Popis:	When a jet of gas impinges vertically on a granular bed and forms a crater, the grains may be moved by several different mechanisms: viscous erosion, diffused gas eruption, bearing capacity failure, and/or diffusion-driven shearing. The relative importance of these mechanisms depends upon the flow regime of the gas, the mechanical state of the granular material, and other physical parameters. Here we report research in two specific regimes: viscous erosion forming scour holes as a function of particle size and gravity; and bearing capacity failure forming deep transient craters as a function of soil compaction. Comment: 4 pages; Powders and Grains 2009, Golden, Colorado, USA
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0905.4851 Zobrazit plný text záznamu View this record from Arxiv