A secondary instability characterized by vorticity filaments with components in the axial and radial direction, was observed forming on the piston vortex. The structure of the instability appears to ...

The transitional regime of vortex development is marked by the appearance of an instability on the perimeter of the vortical structure. The instability mechanism appears to be centrifugal in nature.

Because this is the Polar Vortex Blog, we would love to be able to tell you how the stratospheric polar vortex is doing super cool things that can explain how cold and snowy it’s been in many ...

Velocity vectors and vorticity from PIV measurements are overlaid to indicate the vortex ring. An autonomous underwater vehicle can propel itself efficiently by using the energy in nearby water ...