Squeeze film performance of parallel annular plates by ferrofluid couple stress lubricant considering effects of rotational inertia

Abstract

Purpose

The purpose of this paper is to investigate squeezing and rotating motions between two parallel annular discs lubricated by ferro-fluid couple stress lubricant in the presence of a uniform magnetic field.

Design/methodology/approach

Based upon the Stokes couple stress theory and ferro-hydrodynamic model of Shliomis, squeeze film characteristics between two parallel annular discs are obtained.

Findings

According to the results, it is found that the combined effects of couple stress and ferro-fluid lubricant increase squeeze film performance with respect to the classical Newtonian lubricant. However, an increase in the rotational inertia parameter reduces squeeze film characteristics.

Originality/value

This paper is relatively original and describes the squeeze film characteristics between two parallel annular discs with rotational inertia, couple stress and ferro-fluid lubricant effects.

Citation

Dolatsara, N.G., Daliri, M. and Shameli, M. (2017), "Squeeze film performance of parallel annular plates by ferrofluid couple stress lubricant considering effects of rotational inertia", Industrial Lubrication and Tribology, Vol. 69 No. 6, pp. 990-994. https://doi.org/10.1108/ILT-04-2016-0090