Many inhalers are designed around an idealized user who can inhale forcefully and coordinate breathing with the release of medication. The SwRI team is using computational fluid dynamics (CFD) to examine the complex airflow patterns produced during inhalation. To test the computational predictions, SwRI researchers connected a breathing simulator to a three-dimensional printed model of a child’s airway. The project also examines the formulation of dry powder inhalers, which typically contain a small drug particle attached to or blended with a much larger carrier particle. The internally funded effort brings together SwRI’s Mechanical Engineering, Powertrain Engineering, and Chemistry and Chemical Engineering divisions.