, Volume 4, Issue 4, pp 380–390 | Cite as

Lubricant flow in thin-film elastohydrodynamic contact under extreme conditions

  • P. Sperka
  • I. Krupka
  • M. Hartl
Open Access
Research Article


To further extend knowledge about fluid film friction in elastohydrodynamic contact, it is important to examine how lubricant flows. In this paper, several film thickness results obtained by interferometry technique for different kinds of experiments were analyzed and discussed based on lubricant flow continuity. Results of two steady-state and two transient experiments are presented. Possible speed profiles that can explain observed film thickness distributions were suggested. It is shown that major part of present experiments can be explained by a single speed profile known as a plug flow. This finding is in contradiction to usual linear speed profile predicted by Reynolds equation.


fluid film friction speed profile flow rate continuity lubricant rheology plug flow 



The research leading to these results has received funding from the Ministry of Education, Youth and Sports of Czech Republic under the National Sustainability Program I (Project LO1202).


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Copyright information

© The author(s) 2016

Open Access: The research leading to these results has received funding from the Ministry of Education, Youth and Sports of Czech Republic under the National Sustainability Program I (Project LO1202).

Authors and Affiliations

  1. 1.Faculty of Mechanical EngineeringBrno University of TechnologyBrnoCzech Republic

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