This article is cited in 7 papers

Gases and Fluids

Analysis of the effective viscosity of thin interlayers of aliphatic liquids in the fields of fluctuation forces generated by solid substrates

B. A. Altoiz, S. V. Kiriyan, E. A. Shatagina

I. I. Mechnikov Odessa National University

Abstract: It is established experimentally that the viscosity of micrometer interlayers of mineral motor oil and $n$-hexadecane between metal substrates differs from the viscosity of the isotropic liquid and depends on the shear strain rate. The observed difference is attributed to the formation of orientation-ordered layers in the field of fluctuation forces of the substrates; the thickness of these layers decreases with the intensity of the flow. The results of viscosimetric experiments are interpreted using a rheological model of a structurally inhomogeneous interlayer with “constant-viscosity” surface layers and an isotropic liquid between these layers. This model is employed for calculating the main structural parameters of such layers and the effect of the flow on them.

Received: 17.11.2009
Accepted: 24.03.2010

 English version: Technical Physics, 2010, 55:10, 1426–1429

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