SYSTEMS AND METHODS FOR ACTIVE CONTROL OF SURFACE DRAG USING WALL COUPLING

Fecha de publicación: 15/09/2021
Fuente: WIPO Wine
A system includes a surface having a fluid flowing over the surface. The fluid includes a flow regime having a streamwise length scale greater than about 100 times η and less than about 100,000 times η, where η is a viscous length scale of the flow regime, and a convective time scale greater than about 10η' and less than about 10,000η', where η' is a viscous time scale of the flow regime. The system includes a controller that causes at least one of motion the surface to modify fluid flow in the flow regime based on the streamwise length scale and the convective time scale or motion of the flow regime based on the streamwise length scale and the convectivse time scale.