Flow Through Nano Porous Media: Defining a Benchmark Scenario

A benchmark scenario for studying the effect of non-continuum phenomena on the macroscopic properties of nano porous media is introduced. It consists of three geometries typical for the flow situation in porous media and should be representative for complex flows in general. Continuum results are presented as reference cases reaching from no-slip to total slip and different values of slip lengths. The results are compared to Lattice-Boltzmann simulations combined with a modification of the Shan-Chen model to account for slip. The comparison shows deviations between the models that can not be observed in a flow over flat walls. Such continuum results are provided for comparing them with simulations based on molecular dynamics on the nano scale in order to identify the breakdown of the continuum assumptions for small scales.