Application of FV-MD coupling algorithm in microchannel flow

In this paper, the FV (finite volume)-MD (molecular dynamics) coupling algorithm was employed to study the liquid flow in microchannels. The effects of the channel width and the liquid-solid interaction were analyzed. The results show that the decreases in channel width and liquid-solid interaction cause the velocity profile deviates from the analytical solution and the emergence of velocity slip. In the case of Ar-Pt, the velocity slip is less than 0.5% of the maximum velocity and the slip length is less than 0.2% of the channel width when the width is over 0.6 μm.