Weidong Zhou, Shengkai Yu, Wei Hua, and Kyaw Sett Myo A modified slip model for gas lubrication at nanoscale head-disk interface Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology December 2013 227: 1367-1375, first published on July 9, 2013 doi:10.1177/1350650113493621
Abstract:
In this paper, we derive a modified slip model for gas lubrication based on the effective viscosity concept and a kinetic-theory based slip boundary condition. A more accurate expression for the effective mean free path is proposed, which can overcome the deficiency of other slip models in predicting effective mean free path. In comparison with the existing slip models, such as the first, second and 1.5 order slip models, the current
slip model agrees well with F-K model over the entire flow regimes and therefore is expected to be more accurate for ultra-thin gas film lubrication at head-disk interface.