B26-056 A MOLECULAR DYNAMICS STUDY OF MICROSCALE THERMAL FLOW : EFFECTS OF SOLID-LIQUID INTERFACIAL INTERACTION

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概要

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• In order to examine the effect of interfacial molecular interaction on the microscale fluidic flow, we carry out molecular dynamic simulations to simple Lennard-Jones (LJ) fluids under the driving force in a nanochannel. A modified LJ potential function is used to represent different interfacial interaction and the results show that the hydrodynamic boundary condition at the solid-liquid interface depends on both the interface wettability and the magnitude of the driving force. For a hydrophilic surface, the velocity profile has the traditional parabolic shape but the no-slip boundary condition may break down when the driving force exceeds a critical value. The velocity shows a plug flow profile for a hydrophobic surface and the existence of a gap between liquid and solid results in almost frictionless resistance at the interface. Furthermore, it is found that the non-uniform temperature and pressure profiles near the solid wall are owing to the effect of interfacial molecular interaction.

• 一般社団法人日本機械学会の論文
• 2003-11-30

著者

• Cheng Ping

  School Of Mechanical And Power Engineering Shanghai Jiaotong University

• Nagayama Gyoko

  Department Of Mechanical & Electrical Engineering Tokuyama College Of Technology

• Nagayama Gyoko

  Department Of Mechanical & Elecrical Engineering Tokuyama College Of Technology

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• B26-056 A MOLECULAR DYNAMICS STUDY OF MICROSCALE THERMAL FLOW : EFFECTS OF SOLID-LIQUID INTERFACIAL INTERACTION

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