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

Gulik, P. S. van der; Mostert, R.; Berg, H. van den

doi:10.1016/0378-4371(88)90045-3

Cited by 55 publications

(20 citation statements)

References 19 publications

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“…It is possible to Fourier transform the data and to use the transform to determine the frequency, co, from the result peak in the frequency domain and the decrement, A, from the width of the Lorentzian peak [ 13 ]. Alternatively, it is possible to determine the peak values of the velocity and use pairs of these to determine the decrement.…”

Section: Data Reductionmentioning

confidence: 99%

Vibrating-wire viscometers for liquids at high pressures

et al. 1992

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The design and operation of two independent vibrating-wire viscometers are described. The instruments are intended for operation in the liquid phase at pressures up to 300 MPa and have been designed specifically for this purpose using the detailed theory of the device. Extensive evidence is adduced to demonstrate that the operation of the viscometers is consistent with the theory. Although the instruments attain a precision in viscosity measurements of • when used in an absolute mode the accuracy that can be achieved is no better than __+3%. However, if the instrument is calibrated for two welldefined instrumental parameters, the uncertainty in the reported viscosity is improved to _+0.5%. The results of measurements of the viscosity of normal heptane in the temperature range 303 to 348 K at pressures up to 250 MPa made with one of the viscometers are reported. The results are shown to be totally consistent with measurements reported earlier using the instrument designed for lower pressures.

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Section: Data Reductionmentioning

confidence: 99%

Vibrating-wire viscometers for liquids at high pressures

et al. 1992

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“…Methane is a subject of both experimental and theoretical interest; a sizeable body of data already exists at low and intermediate pressures as summarized in [1]. Data have also been taken up to 1 GPa at 273 K [2] and at 298 K [3], and to 0.08 GPa and a maximum temperature of 523 K [4]. Given its nature as a psuedospherical molecule, it was interesting to see whether methane would continue to behave akin to a hard sphere or, at higher densities, exhibit a "locking" of rotational motion as surmised in Refs.…”

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confidence: 99%

“…Given its nature as a psuedospherical molecule, it was interesting to see whether methane would continue to behave akin to a hard sphere or, at higher densities, exhibit a "locking" of rotational motion as surmised in Refs. [2,3].…”

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confidence: 99%

Viscosity of methane to 6 GPa and 673 K

Abramson

2011

Phys. Rev. E

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“…For methane, the extended hard-sphere model performs slightly less well than the original scheme at intermediate reduced densities, with significant negative deviations for reduced densities 1/V* between 0.3 and 0.5, but at higher densities, the model performs as well as the original (for comparison, the original scheme correlates the data at 1/V* ≥ 0.2, with ΔAAD = 2.6 % and ΔMAD = 8.7 %). It is notable that the data for van der Gulik [36] at T = 298.15 K, which extends up to p = 1000 MPa, are represented with relative deviations of between +3% and -6%, whereas van der Gulik's [37] data at T = 273 K show generally larger deviations of between +2% and -12%. The deviations for ethane, seen in Figure 2(b), also show some dependence on 1/V* but are generally satisfactory at all densities.…”

Section: The New Reference Function For Reduced Excess Viscositymentioning

confidence: 92%