The influence of microchannel internal structure elements spatial distribution on the hydrodynamic characteristics of the fluid flow

This study applies a numerical approach to describe the flow behaviour in a microchannel with non-deformable structural elements. The influence of the spatial distribution of the channel internal structure elements on the integral characteristics of the system is studied. In particular, the change of permeability of the model at different values of the specific surface area of the channel elements and at transition to the second porosity scale with preservation of the total porosity of the system is considered. Flow patterns and velocity fields in channels of complex geometry are obtained. The dependence of the medium permeability on the spatial distribution of micro-sized posts inside the channel is also determined.