The thermal diffusivity of water at high pressures and temperatures

Thermal diffusivities of fluid water have been measured to a pressure of 3.5 GPa, a density of 1.4 g cm−3 and a temperature of 400 °C. Above 100 °C, both the diffusivities and the related conductivities are found, unexpectedly, to scale as the square-root of absolute temperature; in contrast, the ex...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 2001-12, Vol.115 (22), p.10461-10463
Main Authors: Abramson, Evan H., Brown, J. Michael, Slutsky, Leon J.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Thermal diffusivities of fluid water have been measured to a pressure of 3.5 GPa, a density of 1.4 g cm−3 and a temperature of 400 °C. Above 100 °C, both the diffusivities and the related conductivities are found, unexpectedly, to scale as the square-root of absolute temperature; in contrast, the excess conductivities are highly dependent on temperature. Measurements at 25 °C, extending into a metastable regime with respect to ice VI, do not scale in this manner and this anomalous behavior is not suppressed by pressures up to 1.3 GPa.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.1418244