The resin injection simulation is an important part of the FRP process chain and uses the results of the braiding simulation, in the project DigitPro of ARENA2036. At the moment almost planar permeability values are used, as near-net-shape prediction in measuring benches or tools are only realizable with increased effort and for each new component. In the project DigitPro a new approach of predicting permeability values is concerned. The textile layup of the target structure, based on the data stored in the Digital Prototype, is modelled mesoscopicly and a flow through the textile is generated using CFD solver. Also the Dual-Scale-Effect can be simulated, around and through the individual yarns.