Vorticity magnitude
Please could someone tell me how to calculate the vorticity magnitude.
Thanks 
Re: Vorticity magnitude
Compute the curl of velocity and take the magnitude of the vector.

Re: Vorticity magnitude
wx = dw/dy  dv/dz wy = du/dz  dw/dx wz = dv/dx  du/dy
w = wx(i) + wy(j) + wz(k) vorticity magnitude = sqrt(w.w) = sqrt( wx*wx +wy*wy +wz*wz) 
Re: Vorticity magnitude
Could this function be defined into any cfd post.

or with vorticity tensor
w=wij
where wij is the vorticity tensor defined as the antysymmetric part of the velocity gradient tensor. Its magnitude defined by: wij=sqrt(2wij*wij) and its the same as the magnitude of the vorticity vector as defined earlier. 
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