Abstract
The classical molecular dynamics was applied to a liquid molecular system confined by two solid layers controlled at different temperatures in order to investigate effects of structural clearances in nanometer scale to thermal resistance between a solid wall and a liquid molecular region. Clearance between surface structures on a solid layers, temperature gradients and molecular density in a liquid region were varied as calculation parameters in the present study. The calculation results showed that there was an optimal surface structural clearance in nanometer scale to reduce the thermal resistance at liquid-solid interface and that the optimal clearance corresponded to 6 - 10 times as large as the mean free path of fluid molecules.