Computational Fluid Dynamics (CFD) is a new tool that is a significantly time and cost saving for analysis of most equipment and processes of the major NW fabric making processes. Application of CFD includes product design, process design optimization, scale-up as well as troubleshooting. This paper will summarize a few specific applications from the fiber manufacturing and NW industry. These are transient analysis of turbulent flow of air delivery systems in Spun-Bond NW fabric manufacturing; and the Melt-blown dies using advanced turbulent model, Large Eddy Simulation (LES) in the CFD tool from FLUENT. Also presented are the simulation results of airflow and fiber accumulation in a Fluff Pad Machine. This study involved use of another advanced model called Discrete Phase Model (DPM) to track individual fiber elements.