The flow properties of liquid in microchannel have received more attention for their wide applications in different fields.Up to now,little work has focused on the flow behaviors of liquid metals.Recently,liquid lithium(Li)has been considered as one of the candidate plasma-facing materials(PFMs)because of its excellent properties in fusion reactor applications.Considering an accident condition,liquid Li may contact Cu components and erode them,which may cause a serious disaster.The study of the flow properi...