Viscosity measurements for squalane at high pressures to 350 MPa from T = (293.15 to 363.15) K |
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| Affiliation: | 1. Department of Mathematics, Quaid-i-Azam University, Islamabad, Pakistan;2. Department of Mathematics, COMSATS Institute of Information Technology, Attock, Pakistan;1. CNRS, Université de Montpellier, Botanique et modélisation de l''architecture des plantes et des végétations (AMAP), F-34098 Montpellier, France;2. Evo-Eco-Paléo, UMR 8198 du CNRS, Université de Lille, F-59655 Villeneuve d''Ascq, France;3. Biostratigraphy Group, Exploration Technical Services Department, Saudi Aramco, Dhahran, Saudi Arabia;4. PPP, Département de Géologie, Université de Liège, Allée du 6 Août, B18 Sart Tilman, B4000 Liège, Belgium |
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| Abstract: | Squalane is being recommended as a secondary reference material for viscometry at moderate to high pressure and at moderate viscosity. As part of this work, a correlation has been developed for atmospheric pressure (Comuñas et al., 2013) [12]. Here we report new experimental high pressure viscosities for squalane (176 data points obtained for temperatures (293.15 to 363.15) K, at pressures up to 350 MPa with a maximum viscosity of 745 mPa · s). These have been determined with four different falling-body viscometers as well as a quartz crystal resonator viscometer. A preliminary high pressure viscosity correlation for squalane is proposed, based on our new data. At pressures up to 350 MPa, this correlation provides an absolute average deviation of 1.5% with a maximum absolute deviation of 8.9%. Comparison is made between the different instruments. In addition, we have also considered the validity of a thermodynamic scaling model. |
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| Keywords: | Squalane Viscosity High pressures Reference material Thermodynamic scaling |
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