Journal
TRIBOLOGY INTERNATIONAL
Volume 78, Issue -, Pages 152-159Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2014.05.018
Keywords
Nanofluids; Molecular dynamics; Friction behaviors; Phase transitions
Categories
Funding
- National Natural Science Foundation of China [51276031, 51006015, 51376002]
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We performed molecular dynamics simulations to study friction property differences between base fluids and nanofluids in shear flow field. The results show that with the increase of load, liquid-solid transitions take place for both base fluids and nanofluids. Specifically, the transition pressure for nanofluids is higher than that of the base fluid and the nanofluids show excellent friction-reducing properties when the load is high (exceeds the transition pressure of base fluid). Additionally, nanofluids have a greater load-carrying capacity than base fluids. In this work, we explained the mechanisms responsible for the nanoparticles' favorable friction properties, and to verify these mechanisms we additionally studied the effect of nanoparticle radius on friction behaviors. (C) 2014 Elsevier Ltd. All rights reserved.
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