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Article | REF: TRI1540 V2

Elastohydrodynamic Lubrication

Author: Pascal GUAY

Publication date: March 10, 2024

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2. Reynolds equation

The Reynolds equation is the basis of lubrication theory. The article [TRI 1 500] presents the Reynolds equation established in 1886 by the Irishman Osborne Reynolds, based on the equations of fluid mechanics adapted to the case of thin films . In EHD lubrication, the contact surfaces are generally rotating, and the Reynolds equation is written :

  • for a linear contact (e.g. a long cylinder on a plane) :

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