From physical law...
Take a tennis ball...
hit the ball...
Physical laws tell you the trajectory: a nice parabola!
Warning :
Is this also true for flow? (atmosphere, ocean,...)
Look at this...
Warning :
Is it an observation or a numerical result?
Fundamental :
This is the numerical solution of the 2D Navier-Stokes equation!
Complement :
Same kind of structures
Same kind of filaments
