Effect of Nano and Micro Particle Additives on Rough Surface TEHL with Non-Newtonian Lubricant

Abstract:

This paper presents the results of a analysis of rough thermo-elastohydrodynamic lubrication (TEHL) of line contact with non-Newtonian lubricant blended with Al₂O₃ nanoparticles and MoS2 microparticles. The simultaneous systems of time independent modified Reynolds equation, elasticity equation, load carrying with micro particle equation and energy equation were solved numerically using multigrid multilevel with full approximation technique. In this study, the effect of Al₂O₃ nanoparticle and MoS₂ microparticle additives and surface roughness were implemented to obtain film thickness, film pressure, film temperature, friction coefficient and load carrying with microparticle in the contact region. The simulation results showed that the maximum film temperature and friction coefficient increase slightly but the minimum film thickness decreases slightly with an increase in Al₂O₃ nanoparticle concentration due to thermal enhancement of nanofluid. For increasing of microparticle concentration, the minimum film thickness and friction coefficient decrease because the increasing of friction heating of MoS₂ microparticle.

• Periodical: Applied Mechanics and Materials (Volume 736)
• Pages: 45-52
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.736.45
• Online since: March 2015
• Authors: Panichakorn Jesda*
• Keywords: Microparticle, Multigrid Multilevel, Nanoparticle, Rough Surface, TEHL

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