Abstract
The possibility of reducing the friction drag via the rheodynamic factor has been studied. The problems of the pumped flow of nonlinear viscous liquid in channels and gradientless flow along a tray with ductile coatings have been considered. It has been suggested that the liquid-wall system is in a quasi-equilibrium deformable state with the assumption of a local-nonequilibrium (relaxation) change of the external disturbance intensity in the wall. The external and internal parameters of reducing the fraction drag have been determined. It has been stated that the friction drag reduction of flow is caused by nonlinear viscous properties of liquid and the relaxation of the stressed state of the flexible wall.
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Original Russian Text © V.I. Popov, 2015, published in Teoreticheskie Osnovy Khimicheskoi Tekhnologii, 2015, Vol. 49, No. 3, pp. 347–354.
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Popov, V.I. Rheodynamic factor friction drag reduction in the channel and surface. Theor Found Chem Eng 49, 330–337 (2015). https://doi.org/10.1134/S0040579515030124
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DOI: https://doi.org/10.1134/S0040579515030124