Abstract
A system of two approaching fluid particles at small gap widths is investigated. The concept of “an effective zone of interaction” is used to analyse the stationary Navier-Stokes equations in the respective phases. Particular cases are distinguished in which it is possible to make significant simplifications in the governing differential equations. A validity criterion for the lubrication theory equations in the thin layer is proposed, which accounts for the tangential mobility of the interfaces.
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Mileva, E., Radoev, B. Effective zones of hydrodynamical interaction of fluid particles at small separations. Colloid & Polymer Sci 264, 823–828 (1986). https://doi.org/10.1007/BF01500761
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DOI: https://doi.org/10.1007/BF01500761