The importancy of predicting Laminar Air Flow (LAF flow) in cleanrooms and hospital environment is very high. With CFD it is possible to model and predict the deposition of tiny particles in the airflow, and areas where the deposition is highly prevented. In this picture a LAF-flow cabinet is shown. Due to strict specifications one should design the cabinet in such a way that all clean air flows nicely without turbulence to the room.
Downflow cabinets are another important application in the laboratory environment.