Effect of Interstitial Media on Segregation in Vertically Vibrated Granular Mixtures

Vertically vibrated segregation behaviors of binary granular mixtures with different interstitial media are experimentally investigated. To study the role of interstitial media on the segregation, two types of interstitial fluids are adopted and the resulting phase diagrams are compared. The water-i...

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Bibliographic Details
Published in:Chinese physics letters 2013-01, Vol.30 (1), p.14501-1-014501-4, Article 014501
Main Authors: Yuan, Xiao-Xian, Li, Liang-Sheng, Wen, Ping-Ping, Shi, Qing-Fan, Zheng, Ning
Format: Article
Language:English
Subjects:
Fluid dynamics
Fluid flow
Fluids
Grains
Interstitials
Media
Phase diagrams
Segregations
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Summary:Vertically vibrated segregation behaviors of binary granular mixtures with different interstitial media are experimentally investigated. To study the role of interstitial media on the segregation, two types of interstitial fluids are adopted and the resulting phase diagrams are compared. The water-immersed granular mixture exhibits two kinds of complete segregation behaviors: Brazil nut effect and sandwich patterns, at least the latter is absent in the same air-immersed mixture. Additionally, the segregation extent is improved remarkably for the water-immersed mixture. The experimental observation further confirms that the effect of interstitial media on the relative motion of grains is one of the predominant mechanisms for granular segregation.
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/30/1/014501