Diy Drone :
One of the challenges of experimental fluid dynamics is capturing information about a flow that varies in three spatial dimensions & time. Experimentalists have developed many techniques over the years–some qualitative and some quantitative–all of which can only capture a small portion of the flow. The photos above are a series of laser-induced fluorescence (LIF) images of an airfoil at increasing angles of attack. The green swirls are ….
