Advances in nonequilibrium molecular dynamics simulations of lubricants and additives

Abstract Nonequilibrium molecular dynamics (NEMD) simulations have provided unique insights into the nanoscale behaviour of lubricants under shear. This review discusses the early history of NEMD and its progression from a tool to corroborate theories of the liquid state, to an instrument that can d...

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Main Authors: J. P. Ewen, D. M. Heyes, D. Dini
Format: Article
Language:English
Published: Tsinghua University Press 2018-02-01
Series:Friction
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Online Access:http://link.springer.com/article/10.1007/s40544-018-0207-9
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author J. P. Ewen
D. M. Heyes
D. Dini
author_facet J. P. Ewen
D. M. Heyes
D. Dini
author_sort J. P. Ewen
collection DOAJ
description Abstract Nonequilibrium molecular dynamics (NEMD) simulations have provided unique insights into the nanoscale behaviour of lubricants under shear. This review discusses the early history of NEMD and its progression from a tool to corroborate theories of the liquid state, to an instrument that can directly evaluate important fluid properties, towards a potential design tool in tribology. The key methodological advances which have allowed this evolution are also highlighted. This is followed by a summary of bulk and confined NEMD simulations of liquid lubricants and lubricant additives, as they have progressed from simple atomic fluids to ever more complex, realistic molecules. The future outlook of NEMD in tribology, including the inclusion of chemical reactivity for additives, and coupling to continuum methods for large systems, is also briefly discussed.
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spelling doaj-art-488262a6243b4077aec97f43d9d6ebf72025-08-20T01:56:29ZengTsinghua University PressFriction2223-76902223-77042018-02-016434938610.1007/s40544-018-0207-9Advances in nonequilibrium molecular dynamics simulations of lubricants and additivesJ. P. Ewen0D. M. Heyes1D. Dini2Department of Mechanical Engineering, Imperial College LondonDepartment of Mechanical Engineering, Imperial College LondonDepartment of Mechanical Engineering, Imperial College LondonAbstract Nonequilibrium molecular dynamics (NEMD) simulations have provided unique insights into the nanoscale behaviour of lubricants under shear. This review discusses the early history of NEMD and its progression from a tool to corroborate theories of the liquid state, to an instrument that can directly evaluate important fluid properties, towards a potential design tool in tribology. The key methodological advances which have allowed this evolution are also highlighted. This is followed by a summary of bulk and confined NEMD simulations of liquid lubricants and lubricant additives, as they have progressed from simple atomic fluids to ever more complex, realistic molecules. The future outlook of NEMD in tribology, including the inclusion of chemical reactivity for additives, and coupling to continuum methods for large systems, is also briefly discussed.http://link.springer.com/article/10.1007/s40544-018-0207-9molecular dynamicsnonequilibrium systemsconfined fluidsboundary lubricationelastohydrodynamic lubricationtribology
spellingShingle J. P. Ewen
D. M. Heyes
D. Dini
Advances in nonequilibrium molecular dynamics simulations of lubricants and additives
Friction
molecular dynamics
nonequilibrium systems
confined fluids
boundary lubrication
elastohydrodynamic lubrication
tribology
title Advances in nonequilibrium molecular dynamics simulations of lubricants and additives
title_full Advances in nonequilibrium molecular dynamics simulations of lubricants and additives
title_fullStr Advances in nonequilibrium molecular dynamics simulations of lubricants and additives
title_full_unstemmed Advances in nonequilibrium molecular dynamics simulations of lubricants and additives
title_short Advances in nonequilibrium molecular dynamics simulations of lubricants and additives
title_sort advances in nonequilibrium molecular dynamics simulations of lubricants and additives
topic molecular dynamics
nonequilibrium systems
confined fluids
boundary lubrication
elastohydrodynamic lubrication
tribology
url http://link.springer.com/article/10.1007/s40544-018-0207-9
work_keys_str_mv AT jpewen advancesinnonequilibriummoleculardynamicssimulationsoflubricantsandadditives
AT dmheyes advancesinnonequilibriummoleculardynamicssimulationsoflubricantsandadditives
AT ddini advancesinnonequilibriummoleculardynamicssimulationsoflubricantsandadditives