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

1988; Elsevier BV; Volume: 151; Issue: 1 Linguagem: Inglês

10.1016/0378-4371(88)90045-3

1873-2119

P. S. van der Gulik, R. Mostert, Helena Berg,

Hydrocarbon exploration and reservoir analysis

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.