Turbulence, a highly random phenomenon, is known to exhibit organised motion of fluid elements, known as coherent structures. Studying the motion of these structures gives us insights into understanding turbulence. The figure shows these coherent structures, called 'line plumes', that form on a horizontal plate that is heated to cause turbulent convection. For the first time, we classified the various types of motion of these structures and found out the scalings of these motions. This image appeared on the cover of Journal of Fluid Mechanics, vol 749. For further info click here.
Posted by: Dr. A. P. Baburaj (AM)