Fire Dynamics Simulator (FDS); Reynolds-Averaged Navier-Stokes (RANS); Large-Eddy Simulation (LES); CFAST (Consolidated Fire growth And Smoke Transport); smoke filling in a room environment; summary of input/output parameters; smoke filling in a hanger environment; correlation of grid size with the quality of predictions for natural filling rate in a hanger environment; mechanical extraction (different volumetric rates); smoke extraction; smoke filling and extraction in an atrium environment; smoke movement in a corridor environment