Sound From Sand
| dc.contributor.author | Tan, Danielle | en_US |
| dc.contributor.chair | Jenkins, James Thomas | en_US |
| dc.contributor.committeeMember | Sachse, Wolfgang H | en_US |
| dc.contributor.committeeMember | Cohen, Itai | en_US |
| dc.date.accessioned | 2012-06-28T20:56:54Z | |
| dc.date.available | 2017-06-01T06:00:37Z | |
| dc.date.issued | 2012-01-31 | en_US |
| dc.description.abstract | Various methods of producing sound from 'sounding' sand in the laboratory are explored. Low amplitude sound with frequency similar to that of 'booming' during spontaneous avalanches was produced in a small inclined chute and rotating flask. Shearing of dried sand with a stylus, and pouring from buckets or shaking in a jar produced loud sound in 200-500Hz range. Dryness of the sand and flowrate have significant effect on the produced sound. A model based on kinetic theory is proposed to explain the production of oscillations in avalanching flows. The avalanching layer behaves like a breathing mode with infinite wavelength, and perturbations in volume fraction allow oscillatory behaviour to be sustained in the inclined shear flow. Finally, a phase transition model is used to explain the presence, and characteristics, of oscillations observed in numerical simulations of inclined flows near their stopping angle. | en_US |
| dc.identifier.other | bibid: 7745121 | |
| dc.identifier.uri | https://hdl.handle.net/1813/29283 | |
| dc.language.iso | en_US | en_US |
| dc.subject | granular material | en_US |
| dc.subject | sound production | en_US |
| dc.subject | kinetic theory | en_US |
| dc.title | Sound From Sand | en_US |
| dc.type | dissertation or thesis | en_US |
| thesis.degree.discipline | Theoretical and Applied Mechanics | |
| thesis.degree.grantor | Cornell University | en_US |
| thesis.degree.level | Doctor of Philosophy | |
| thesis.degree.name | Ph. D., Theoretical and Applied Mechanics |
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