The viscosity of methane at 25°C up to 10 kbar

The viscosity coefficient of methane at 25°C has been measured at pressures from 1 to 10 000 bar by means of the vibrating wire viscometer. The same behaviour has been found for methane as for argon with earlier measurements, except at the very highest pressures from 8 to 10 kbar. In this range the...

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Bibliographic Details
Published in:Physica A 1988, Vol.151 (1), p.153-166
Main Authors: Van Der Gulik, P.S., Mostert, R., Van Den Berg, H.R.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Physics
Physics of gases
Physics of gases, plasmas and electric discharges
Viscosity, diffusion and thermal conductivity
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Summary:The viscosity coefficient of methane at 25°C has been measured at pressures from 1 to 10 000 bar by means of the vibrating wire viscometer. The same behaviour has been found for methane as for argon with earlier measurements, except at the very highest pressures from 8 to 10 kbar. In this range the viscosity coefficient η of methane deviates from the expected behaviour, presumably due to hindered rotation of the molecules. This appears in the Batschinski-Hildebrand representation as a third linear relation between the fluidity and the molar volume in the high density range. The comparison of the results with molecular dynamic computations for hard spheres shows a similar deviation from the expected behaviour.
ISSN:0378-4371
1873-2119
DOI:10.1016/0378-4371(88)90045-3