Identification/Visualization of Vortices in Turbulence
Here we see some pictures of vortices which are visualized by some
typical or new methods.
A difficulty of vortex visualization may be that we donot have a good
physical quantity which represents a vortex in the sense of swirling
motion.
For example, vorticity (rotation of velocity vector) does not
distinguish swirling motions from shear motions.
See also my works of compressible turbulence
Miura and Kida, Journal of Physical Society of Japan, vol.66, No.5 (1997).
image : visualization of central axis of swirling motions
image : visualization of vortices by strength of the vorticity
image : visualization of vortices by the laplacian of the pressure
image : visualization of vortices by \lambda_2-definition
Return to MIURA's Home Page
