Turbulence is the most common state of fluid flow in a wide range of technologies and natural conditions. Formally it is defined as an eddy-like state of fluid ... » 

Turbulence is the most common state of fluid flow in a wide range of technologies and natural conditions. Formally it is defined as an eddy-like state of fluid motion where the inertial-vortex forces are larger than any other forces that tend to damp them out. «