An analysis is made of kinetically and aggregatively unstable non-Newtonian oil disperse systems and of the reasons for the occurrence of this instability that are associated with the coalescence of droplets and their settlement. In this connection, the authors have proposed models of thinning and rupture of the interphase non-Newtonian film between two joined droplets, and also the model of change in the thickness of the interphase film. The Ostwald–de Waele model satisfactorily describing pseudoplastic properties of oil was taken as the basis for the investigation. A model of settlement of particles in a non-Newtonian oil was proposed. The proposed models were compared with the existing experimental data, which has shown their efficiency. Consideration has been given to the conditions of self-organization of aggregatively and kinetically unstable disperse systems. It has been noted that such systems, in the case of infinite time, have no hereditary memory.
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Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 96, No. 3, pp. 663–670, May–June, 2023.
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Kelbaliyev, G.I., Tagiyev, D.B., Manafov, M.R. et al. Kinetically and Aggregatively Unstable Oil Disperse Systems. J Eng Phys Thermophy 96, 660–668 (2023). https://doi.org/10.1007/s10891-023-02727-8
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DOI: https://doi.org/10.1007/s10891-023-02727-8