Thermal conductivity probe: development of method and application to a coarse granular medium
- 1 September 1988
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 21 (9) , 832-839
- https://doi.org/10.1088/0022-3735/21/9/002
Abstract
The author describes the development of a probe method of measuring thermal conductivity k, to enable one to obtain k at times t before the linear domain of probe temperature against ln t is properly established. A variety of probe structures can be accommodated. A probe was constructed and the experimental procedure plus the associated analysis (using a simulation model PROBE) was verified by making measurements on materials of known properties. The technique was applied to an unconsolidated coarse granular medium, a pebble bed consisting of graded river pebbles with equivalent spherical particle diameters 24+or-7 mm, and a bed porosity of 0.396.Keywords
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