Shear and curvature vorticity equations. On the shear and curvature vorticity equations. The generalized Omega equation. Schematic showing the kinematic effect of differential relative vorticity in a water parcel having no relative vorticity in the middle level. Fluid parcels with non-zero differential relative vorticity experience local twisting.
Fluid particles rotate around the horizontal and vertical axis of the central particle.
About the nature of the generalized Omega equation.