41. More precisely, a flow in solid body rotation has vorticity that is proportional to its angular velocity. 42. The Rossby number is a measure of the departure of the vorticity from that of solid body rotation. 43. The vorticity confinement ( VC ) method is an Eulerian technique used in the simulation of turbulent wakes. 44. An irrotational flow means the velocity field is conservative, or equivalently the vorticity pseudovector field is zero: 45. Tao et al . investigated the alignment of vorticity and strain rate tensors in high Reynolds number turbulence. 46. He invented a physics based method called vorticity confinement to compute the numerical solution of partial differential equations. 47. The vorticity equation only gives a non-trivial component in the z-direction, where it becomes 48. For flows ( or parts thereof ) with strong vorticity effects, the potential flow approximation is not applicable. 49. Supercells derive their rotation through tilting of horizontal vorticity ( an invisible horizontal vortex ) caused by wind shear. 50. Note that the vorticity does " not " imply anything about the global behavior of a fluid.
