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Friction and diffusive light transport in a granular medium

Reibung und diffusiver Lichttransport in granularem Stoff

by Sonia Utermann
Doctoral thesis
Date of Examination:2012-01-27
Date of issue:2012-03-05
Advisor:Prof. Dr. Wolfgang Schröter
Referee:Prof. Dr. Stephan Herminghaus
Referee:Prof. Dr. Annette Zippelius
crossref-logoPersistent Address: http://dx.doi.org/10.53846/goediss-2837

 

 

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Abstract

English

This thesis presents experimental research on the statics and dynamics of granular media. In the first part, it is shown that the surface roughness, and thence the interparticle friction of soda-lime glass grains can be tuned using a chemical etching procedure. In the second part, diffusive light transport is used to measure the kinetic granular temperature of soda-lime glass grains in a water-fluidised bed.

Other Languages

Diese Arbeit präsentiert experimentelle Forschung über die Statik und Dynamik granularer Stoffe. Im ersten Teil wird die Oberflächenrauhigkeit von Glaskörnern, und daher die Reibung zwischen ihnen, wird anhand eines chemischen Ätzverfahrens gezielt modifiziert. Im zweiten Teil wird die kinetische granulare Temperatur von Körnern in einem wasserfluidisierten Bett gemessen. Hierfür wird diffusiver Lichttransport verwendet.
 

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