Technical Physics Letters

, Volume 34, Issue 1, pp 76–78

Force acting on a nanoparticle in a fluid

Article

DOI: 10.1134/S1063785008010239

Cite this article as:
Rudyak, V.Y., Belkin, A.A. & Tomilina, E.A. Tech. Phys. Lett. (2008) 34: 76. doi:10.1134/S1063785008010239
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Abstract

A force acting on a nanoparticle occurring in a fluid has been studied by the molecular dynamics method. It is shown that this force is nonstationary and exhibits a relaxation character. At the initial instant, it is two to three times the Stokes force, but then decreases and, outside the first relaxation region, becomes smaller than the Stokes force. A stationary force acting on a nanoparticle is determined by the particle mass and size. Correlation expressions for determining the drag coefficient are constructed. It is established that the drag force is anisotropic.

PACS numbers

05.60.Cd47.11.Mn47.61.-k

Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • V. Ya. Rudyak
    • 1
  • A. A. Belkin
    • 1
  • E. A. Tomilina
    • 1
  1. 1.Novosibirsk State University of Architecture and Civil EngineeringNovosibirskRussia