Influence of interstitial fluid viscosity on transport phenomenon in sheared granular materials

Chun Chung Liao, Shu San Hsiau

研究成果: 書貢獻/報告類型會議論文篇章同行評審

摘要

We report experimental measurements of transport properties on sheared granular materials with different interstitial fluids to study the granular flow behaviors. Four kinds of interstitial fluids are used in the experiments. The ensemble velocities, local shear rates, fluctuation velocities, and self-diffusion coefficients are successfully measured by PTV method. The results indicate that the interstitial fluid plays an important role in determining the transport properties of the granular flow. The particles motions are more random and interactive collisions are more serious in a dry system (interstitial fluid of air). The values of fluctuations are smaller as the interstitial fluid is more viscous resulting in the larger viscous drag force. The thickness of shear band is about three to eight particle diameters and increases with the decreasing of the interstitial fluid viscosity. The self-diffusion coefficient of granular materials is also discussed in this study.

原文???core.languages.en_GB???
主出版物標題Powders and Grains 2009 - Proceedings of the 6th International Conference on Micromechanics of Granular Media
頁面1023-1026
頁數4
DOIs
出版狀態已出版 - 2009
事件6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009 - Golden, CO, United States
持續時間: 13 7月 200917 7月 2009

出版系列

名字AIP Conference Proceedings
1145
ISSN(列印)0094-243X
ISSN(電子)1551-7616

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???event.eventtypes.event.conference???6th International Conference on Micromechanics of Granular Media, Powders and Grains 2009
國家/地區United States
城市Golden, CO
期間13/07/0917/07/09

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