NUMERICAL SIMULATION OF THE GAS FLOW THROUGH THE FENCES AND POROUS MEDIA

The paper is focused on the numerical simulation of the compressible gas flow through the fences and the porous media. We assume the non-stationary viscous compressible fluid flow, described by the RANS equations. In order to simulate the flow through the porous media we modify the source term, achieving the characteristic loss of momentum. For the simulation of the thin fence it is possible to use the modification of the face flux. The original approach was presented recently by the authors, analysing the modification of the Riemann problem with one-side initial condition, complemented with the Darcy's law and added inertial loss. Here we are also interested in the estimate of forces acting on the diffusible barrier (fence) with given parameters. The presented examples were obtained with the own-developed code for the solution of the compressible gas flow.