Experimental and Numerical Investigation of Static and Dynamic Vortex Generators on an Airfoil with a Deflected Flap

摘要

Flow separation can be detrimental in a variety of aerospace applications. A traditional method of preventing or delaying flow separation has been static vortex generators. They are effective in mitigating flow separation, however, they can impose a drag penalty during certain flow regimes, e.g., when the flow is not separated. An alternative to a static vortex generator (SVG) is a dynamic vortex generator (DVG), which can be deployed into the flow when needed and retracted when not needed. Additionally, a DVG can be oscillated about a mean height with a specified amplitude and frequency to target certain frequencies that may be present in the flow, which can make it more effective.