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Article | REF: TRI1540 V1

Elastohydrodynamic lubrication

Author: Pascal GUAY

Publication date: March 10, 2015

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2. The Reynolds equation

The article [TRI 1500] 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 film . 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) :

    ddx(h3μdp dx)=6(u1+u2)dhdx
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The Reynolds equation
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