Kobayashi, Riki2009-06-042009-06-041994Beznik, Frantz. "Corresponding states correlations relating proton spin-lattice relaxation rates of hydrocarbons to viscosities at advanced pressures." (1994) Master’s Thesis, Rice University. <a href="https://hdl.handle.net/1911/13814">https://hdl.handle.net/1911/13814</a>.https://hdl.handle.net/1911/13814A new five-parameter corresponding states model has been developed for viscosity and proton spin-lattice relaxation rate applicable to a variety of hydrocarbons in the dense fluid phase region. This model is the key to the development of unprecedented, accurate correlations between the proton spin-lattice relaxation rate, R$\sb1$, and the viscosity, $\eta$, of pure hydrocarbons, with an observed root-mean-square deviations of less than 8.0%. For hydrocarbon mixtures, the notion of "effective" spin-lattice relaxation rate, introduced by Zega et al$\sp{1,2}$, is pursued. Then, simple mixing rules are successfully applied to extend the model to mixtures. The four-parameter corresponding states treatment, utilizing the shape factors as proposed by Leach and Leland$\sp3$, yields correlations of comparable accuracy, when confined to long-chain alkanes.142 p.application/pdfengCopyright is held by the author, unless otherwise indicated. Permission to reuse, publish, or reproduce the work beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.Chemical engineeringThesisTHESIS CH.E. 1994 BEZNIK