Clustering and oscillation of the granular gas in a non-symmetrical container
Date Issued
2009
Date
2009
Author(s)
Chiu, Fang-Chih
Abstract
When granular gas receives vertical vibrations in a symmetrical container, it will predent a few interesting phenomena, such as homogeneous state, unstable-gas state, one-clustering state, oscillation state and two-clustering state. On the present thesis, we experemently study the clustering and oscillation of the granular gas in non-symmetrical containers. In order to describe the vessel''s non-symmetry, we defined two dimension -less parameters, α and β to represent the two-compatmentalized non-symmetry and the three-compatmentalized non-symmetry, respectively. When the value of parameters α or β is 1, it represents the container is symmetric.e also compare the granular clusteris in a symmetrical and non-symmetrical container for the homogeneous state, unstable-gas state, one-clustering state, oscillation state and two-clustering state and so on. In the two-compatmentalized non-symmetry, the granular gas clustering prefers the small region. As to the non-symmetric three- compatmentalized container, the granular gas clustering prefers left or right region and not clustering in middle region. The results also finds that as changing the parameters α and β, the clustering line, completely clustering line, homogeneous clustering line, oscillation and granular temperature in each container are altered accordingly.
Subjects
granular gas
non-symmetry
granular clustering
granular oscillation
Type
thesis
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