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 cyclesReport as inadecuate




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1 Phys-ENS - Laboratoire de Physique de l-ENS Lyon

Abstract : 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.

keyword : Granular material





Author: Jean-Christophe Géminard - Hervé Gayvallet - Djamel Bouraya -

Source: https://hal.archives-ouvertes.fr/



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