Active flow control uses actuators and adaptive materials to influence airflow or liquid flow. It can improve aerodynamic performance and reduce drag, vibration, and energy use in vehicles and industrial systems.
Aerodynamic vortex generators are small devices or surface features that create vortices to control airflow, often by delaying boundary-layer separation.
Dielectric barrier discharge plasma actuators use an electrical discharge across an insulating barrier to generate forces that control nearby airflow.
Pulsed and co-flow jet injection are fluidic actuation techniques that inject jets into a surrounding flow to control its behavior.
Shape memory alloys are metallic materials that recover a preset shape when exposed to a suitable change in temperature or other conditions.
Synthetic jet actuators create a jet of fluid by periodically moving fluid into and out of an orifice, with zero net mass flow over each cycle.
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