Published 4 issues per year
ISSN Print: 2169-2785
ISSN Online: 2167-857X
Indexed in
PRESSURE DEPENDENCE OF VISCOSITY: A NEW GENERAL RELATION
ABSTRACT
We reanalyze the pressure dependence of viscosity of liquids of constant composition under isothermal conditions. Based exclusively on very general considerations concerning the relationship between viscosity and free volume of the liquid, we show that viscosity increases, as a rule, with increasing pressure. The conditions are specified at which such normal behavior is replaced by an anomalous decrease of viscosity with pressure. A variety of relations employed frequently in the description of the pressure dependence of viscosity are shown to be special cases of the general relation derived.
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Schmelzer Jürn W. P., Abyzov Alexander S., Ferreira Eduardo B., Fokin Vladimir M., Curvature dependence of the surface tension and crystal nucleation in liquids, International Journal of Applied Glass Science, 10, 1, 2019. Crossref
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Danish Gulzar Ahmad, Imran Muhammad, Fetecau Constantin, Vieru Dumitru, First exact solutions for mixed boundary value problems concerning the motions of fluids with exponential dependence of viscosity on pressure, AIP Advances, 10, 6, 2020. Crossref
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Fetecau Constantin, Vieru Dumitru, Exact solutions for unsteady motion between parallel plates of some fluids with power-law dependence of viscosity on the pressure, Applications in Engineering Science, 1, 2020. Crossref
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Evaristo L.L., Moulton B.J.A., Pizani P.S., Buchner S., Effect of high pressure on the structure of barium disilicate glass-ceramics, Journal of Non-Crystalline Solids, 550, 2020. Crossref
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Deubener Joachim, Schmelzer Jürn W. P., Statistical Approach to Crystal Nucleation in Glass-Forming Liquids, Entropy, 23, 2, 2021. Crossref
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Schmelzer Jürn W.P., Tropin Timur V., Kinetic criteria of vitrification and pressure-induced glass transition: dependence on the rate of change of pressure, Thermochimica Acta, 677, 2019. Crossref