**Author details**

4.The flow velocity of the fluid in the plain bearing takes a maximum value at the angular position of 165°. The difference between the flow velocity for a

It should be emphasized, however, that the conclusions we give here are only valid for the cases we have studied, and that they are not independent of the

The numerical results show that the most significant hydrodynamic characteristics such as pressure, flow velocity of the fluid and friction torque, are significant for the textured plain bearing under rotational velocity of 21,000 rpm and radial load 10,000 N compared to the results obtained for a non-textured plain bearing. When one is interested in plain bearings operating under severe conditions, that is to say for the turbulent regime, the hydrodynamic pressures sometimes reach

non-textured and textured plain bearing is estimated of 38%.

*Tribology in Materials and Manufacturing - Wear, Friction and Lubrication*

characteristics of the plain bearing and of the lubricant.

The authors declare no conflict of interest.

several hundred mega Pascal's.

**Conflict of interest**

B source term C radial clearance e eccentricity L bearing length RS shaft radius RB bush radius

P pressure [Pa] *r*¡ position vector [m] U peripheral speed [m/s]

W radial load [N] Re Reynolds number ε relative eccentricity ϕ Flow factor [°]

ρ density [kg/m<sup>3</sup>

**Indice**

**40**

i Interne

s spécifique t théorique u utile

N rotational velocity [rpm]

μ dynamic viscosity [Pa.s]

ip Indice du point d'intégration

ω shaft angular speed [rad/s] *K* turbulence kinetic energy

U, v, w velocity according x, y, z axis [m/s]

μt turbulent dynamic viscosity [Pa.s]

]

**Nomenclature**

Bendaoud Nadia\* and Mehala Kadda Faculty of Mechanical Engineering, University of the Sciences and Technology of Oran Mohamed Boudiaf, Oran, Algeria

\*Address all correspondence to: nadiamehala@yahoo.fr

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
