Fluidization and fluctations in granular systems

Leiden Repository

Fluidization and fluctations in granular systems

Title: Fluidization and fluctations in granular systems
Author: Nichol, Kiri
Publisher: Faculty of Science, Leiden University
Issue Date: 2011-10-04
Keywords: Brownian motion
Granular media
Granular systems
Granular materials
Soft condensed matter
Statistical mechanics
Abstract: This thesis explores how rheology and statistical mechanics can be used to describe driven granular materials. Chapter 1 is an overview of the current knowledge of slow granular flows. In Chapter 2 we characterize the liquid-like behaviour of a granular system excited by flow in a split-bottom geometry. In Chapter 3 we describe the fluctuations experienced by an object floating in our granular liquid and compare these fluctuations to the Brownian motion of particles in a thermal system. In Chapter 4 we characterize the motion of objects moving in a granular system excited by oscillatory flow. Finally, in Chapter 5, we describe both the microscopic and macroscopic motion of pucks on an air hockey table. We find the the system exhibits equipartition of rotational and translational energy and that the system can be described by van der Waals' equation of state.
Description: Promotor: M.L. van Hecke
With summary in Dutch
Faculty: Faculteit der Wiskunde en Natuurwetenschappen
Citation: Nichol, K., 2011, Doctoral thesis, Leiden University
Series/Report no.: Casimir PHD series;2011-16
ISBN: 9789085931058
Handle: http://hdl.handle.net/1887/17889

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