Here, we present a protocol to observe unsteady vortical flows over a delta wing using a modified smoke flow visualization technique and investigate the mechanism responsible for the oscillations of the leading-edge vortex breakdown locations.
Shen, L., Chen, Z., Wen, C. Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods. J. Vis. Exp. (134), e57244, doi:10.3791/57244 (2018).