# CFD Mod docs [CFD Mod](https://github.com/AeroSim-CFD/cfdmod) **is a Python library for post-processing and geometry preparation of CFD wind-tunnel simulations.** It covers pressure (`Cp`), force (`Cf`), moment (`Cm`) and shape (`Ce`) coefficients; terrain loft and roughness elements; inflow / climate / Lawson statistics; and ParaView snapshot automation. :::{note} v3 reorganizes post-processing around a single data structure -- the {class}`~cfdmod.DataSource` -- and composable ops driven by YAML pipeline templates. The legacy per-coefficient functions (`run_cp` / `run_cf` / `run_cm` / `run_ce`) and their `*CaseConfig` models are removed; every flow now runs through `cfdmod run