Molecular dynamics simulation on the splitting of shear flow in nanochannels

With the vigorous development of micro-/nanoscience and micro-/nanotechnology, fluid flows at micro-/nanoscale have become an important research field. The molecular dynamics simulations Couette flow in a nanochannel are carried out this paper. In order to evaluate non-equilibrium effect rarefied field, “sampling-classification” method is proposed. Through newly developed method, we found that gas nanochannels can be regarded as superposition two independent shear with same rate. A nondimensional quantity “vd” proposed quantificationally degree splitting, or more specifically, state, Further study shows growth roughness will aggravate effect, while increase system temperature leads opposite result. article provide new analytical idea for subsequent researchers, splittable phenomenon discovered also property worthy further study.