enstrophy in a sentence

1. The enstrophy can be described as the integral of the square of the vorticity \ omega,
2. It is closely related to enstrophy, the latter being more equivalent to the " power " of vorticity.
3. Here we have chosen a simplified version of the enstrophy derived from the incompressibility condition, which is equivalent to vanishing divergence of the velocity field,
4. It's difficult to find enstrophy in a sentence.