Journal of Experimental and Theoretical Physics

, Volume 117, Issue 5, pp 970–974 | Cite as

Flow of colloid particle solution past macroscopic bodies and drag crisis

  • S. V. Iordanskii
Statistical, Nonlinear, and Soft Matter Physics


The motion of colloid particles in a viscous fluid flow is considered. Small sizes of colloid particles as compared to the characteristic scale of the flow make it possible to calculate their velocity relative to the liquid. If the density of a colloid particle is higher than the density of the liquid, the flow splits into regions in which the velocity of colloid particles coincides with the velocity of the liquid and regions of flow stagnation in which the colloid velocity is higher than the velocity of the fluid. This effect is used to explain qualitatively the decrease in the drag to the flows past macroscopic bodies and flows in pipes.


Colloid Particle Tangential Velocity Viscous Sublayer Large Reynolds Number Field Zone 
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© Pleiades Publishing, Inc. 2013

Authors and Affiliations

  1. 1.Landau Institute for Theoretical PhysicsRussian Academy of SciencesChernogolovka, Moscow oblastRussia

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