Vortex shedding over a two-dimensional airfoil: Where the particles come from

Some of the facts that need to be considered regarding particle behavior associated with vortex shedding over a two-dimensional airfoil are discussed. One of the factors that needs to be considered is associated with the availability of the particles that make up a shed vortex and the way they form into the recognizable shape of a shed vortex pair. Experts suggest that each particle group interacts minimally with any other particle group, while forming the vortex shed pair of airfoil. It has also been observed that there is significant mixing of particles inside each vortex lobe, while such particle mixing is absent between lobes. This feature can be demonstrated by closely monitoring the vortex shedding process process of particles and overlaying the cross-manifold mixing process.