Thermal conductivity associated with a bead-bead contact decorated by a liquid bridge : An experimental study based on the response of a chain subjected to thermal cycles

We report an experimental study of the heat transport along a chain of macroscopic beads: at one end, one bead is periodically heated and we record the resulting temperature variations of another bead as a function of position and time. The experimental results show that the chain behaves like a hig...

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Bibliographic Details
Published in:The European physical journal. B, Condensed matter physics Condensed matter physics, 2005-12, Vol.48 (4), p.509-517
Main Authors: GEMINARD, J.-C, BOURAYA, D, GAYVALLET, H
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
General Physics
Nonelectronic thermal conduction and heat-pulse propagation in solids
thermal waves
Physics
Transport properties of condensed matter (nonelectronic)
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Summary:We report an experimental study of the heat transport along a chain of macroscopic beads: at one end, one bead is periodically heated and we record the resulting temperature variations of another bead as a function of position and time. The experimental results show that the chain behaves like a high-order low-pass filter. The measurement of the associated cut-off frequency makes it possible to determine accurately the resistance of the bead-bead contact: we make use of the experimental setup for studying the effects of liquid bridges decorating the bead-bead contacts. which provides important clues for understanding the thermal properties of partially wet granular matter.
ISSN:1434-6028
1434-6036
DOI:10.1140/epjb/e2006-00004-6