TY - JOUR
T1 - Molecular dynamics study of thermal phenomena in an ultrathin liquid film sheared between solid surfaces
T2 - The influence of the crystal plane on energy and momentum transfer at solid-liquid interfaces
AU - Ohara, Taku
AU - Torii, Daichi
N1 - Funding Information:
This paper reports a portion of the work supported by the Grant-in-Aid for Scientific Research and the 21st Century COE Program “International COE of Flow Dynamics” by the Japan Society for the Promotion of Science (JSPS). All calculations were performed on a SGI Origin 2000 at the Advanced Fluid Information Research Center, Institute of Fluid Science, Tohoku University.
PY - 2005/6/1
Y1 - 2005/6/1
N2 - A molecular dynamics study has been performed on a liquid film sheared between moving solid walls. Thermal phenomena that occur in the Couette-like flow were examined, including energy conversion from macroscopic flow energy to thermal energy, i.e., viscous heating in the macroscopic sense, and heat conduction from the liquid film to the solid wall via liquid-solid interfaces. Four types of crystal planes of fcc lattice were assumed for the surface of the solid wall. The jumps in velocity and temperature at the interface resulting from deteriorated transfer characteristics of thermal energy and momentum at the interface were observed. It was found that the transfer characteristics of thermal energy and momentum at the interfaces are greatly influenced by the types of crystal plane of the solid wall surface which contacts the liquid film. The mechanism by which such a molecular scale structure influences the energy transfer at the interface was examined by analyzing the molecular motion and its contribution to energy transfer at the solid-liquid interface.
AB - A molecular dynamics study has been performed on a liquid film sheared between moving solid walls. Thermal phenomena that occur in the Couette-like flow were examined, including energy conversion from macroscopic flow energy to thermal energy, i.e., viscous heating in the macroscopic sense, and heat conduction from the liquid film to the solid wall via liquid-solid interfaces. Four types of crystal planes of fcc lattice were assumed for the surface of the solid wall. The jumps in velocity and temperature at the interface resulting from deteriorated transfer characteristics of thermal energy and momentum at the interface were observed. It was found that the transfer characteristics of thermal energy and momentum at the interfaces are greatly influenced by the types of crystal plane of the solid wall surface which contacts the liquid film. The mechanism by which such a molecular scale structure influences the energy transfer at the interface was examined by analyzing the molecular motion and its contribution to energy transfer at the solid-liquid interface.
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U2 - 10.1063/1.1902950
DO - 10.1063/1.1902950
M3 - Article
AN - SCOPUS:21244477872
VL - 122
JO - Journal of Chemical Physics
JF - Journal of Chemical Physics
SN - 0021-9606
IS - 21
M1 - 214717
ER -