首页|Theoretical study on the stability of nanobubbles and its verification in molecular dynamics simulation
Theoretical study on the stability of nanobubbles and its verification in molecular dynamics simulation
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The stability of vapor nanobubbles in bulk liquid was investigated theoretically and the critical bubble size was derived from macroscale thermodynamic equations,below which the system destabilizes with sharp drop in pressure.This critical size was quantitatively verified in molecular dynamic simulation using the Lennard-Jones model of argon,where stronger attraction between the molecules at lower density is found to contribute most to the drop of system pressure and,as the Laplace pressure on the curved bubble interface fails to balance the pressure difference across the interface,the bubbles become unstable.The theoretical model could be extended to other systems where reliable equations of state and interfacial tension are available.
NanobubbleStabilityPhase diagramCritical size
Sheng Mi、Chaofeng Hou、Wei Ge
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School of Chemical Engineering and Technology,Tianjin University,Tianjin,300072,China
State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China
School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing,100049,China
国家自然科学基金重大项目国家自然科学基金创新研究群体项目Project for Young Scientists in Basic Research of Chinese Academy of Sciences
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