Mechanics & Industry
Volume 17, Number 5, 2016
|Number of page(s)||10|
|Published online||07 July 2016|
An artificial viscosity to model the effect of roughness
1 Institut Pprime, CNRS, Université de
2 CNRS Institut Camille Jordan, INSA de Lyon, Université de Lyon, Villeurbanne, France
a Corresponding author:
Accepted: 25 November 2015
This paper presents a new way to consider the effect of roughness in fluid film lubrication. An artificial viscosity function is introduced to model the effect of roughness. The parameters of the function are derived either from the homogenized solution or the stochastic solution. With this method it is possible to determine the average velocity profile, which cannot be done with the usual homogenization or stochastic methods.
Key words: Lubrication / roughness / viscosity / hydrodynamic / tribology
© AFM, EDP Sciences 2016
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