Abstract
Molecular dynamics method is applied to studying the influence of velocity and solid-liquid potential on the pressure of fluid film in wedge nanochannels.The results indicate that the pressure profiles show strong deviations from one of classical fluid film before the separation of bearing from bearing pedestal.The impact of velocity of solid wall on the maximum pressure in the simulation region is limited.For slow velocity,the pressure increases with the increase of velocity.After the pressure in the simulation region reaches the maximum,it will no longer increase with the increase of velocity.Before the separation of bearing from bearing pedestal,the pressure of simulation box is determined by the potential energy contribution.The strength of interaction potential between the liquid and the solid has important influence on the pressure variation in the simulation area.For relatively weak interaction potential,with the enhancement of potential interaction index,the maximum pressure value in the simulation area decreases in a small range.For relatively strong interaction potential,with the increase of potential interaction index,the pressure in the simulation area keeps increasing.
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