Normalized Ashurst-Hoover Scaling and a Comprehensive Viscosity Correlation for Compressed Liquids

摘要: The recent move toward physics-based elastohydrodynamics promises to yield advances in the understanding of mechanisms friction and film generation that were not possible a few years ago. However, accurate correlation low-shear viscosity with temperature pressure is an essential requirement. Ashurst-Hoover thermodynamic scaling, which has been useful for thermal elastohydrodynamic simulation, normalized here manner maps three widely different liquids onto master Stickel curve. curve can be represented by combination two exponential power law terms. These may seen as expressions molecular interaction similar free-volume models Batschinski-Hildebrand Doolittle, respectively. new more reasonable extrapolations extreme conditions than models, it removes singularity prevented wide acceptance numerical simulations. [DOI: 10.1115/1.4005374]