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  Velocity distribution in a granular gas

Cirkel, J. O. (2012). Velocity distribution in a granular gas. Bachelor Thesis, Georg-August-Universität, Göttingen.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-8445-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-864A-0
Genre: Thesis

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2012_bachelor_thesis_jasper_cirkel.pdf (Publisher version), 154MB
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 Creators:
Cirkel, Jasper Ole1, Author              
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1Group Statistical mechanics of granular media, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063310              

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 Abstract: We create a granular gas composed of table tennis balls, and study their behaviour when being shaken vertically. Using techniques of digital particle image velocimetry (DPIV), the two-dimensional velocity distribution and anisotropy of temperature is of particular interest. A high speed camera is set up and supplied with enough lighting to illuminate balls moving at the order of metres per second (ms−1). A shaker provides vertical movement and different structured ground plates are used in order to excite the particles equally in all directions. The images are processed by a routine implemented in Matlab. We find that the velocity distribution is both dependent on the structure of the ground plate and the observed position in the container.

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Language(s): eng - English
 Dates: 2012
 Publication Status: Accepted / In Press
 Pages: -
 Publishing info: Göttingen : Georg-August-Universität
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 Rev. Method: -
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 Degree: Bachelor

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