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CFD-junior January 19, 2005 05:25

Vorticity magnitude
 
Please could someone tell me how to calculate the vorticity magnitude.

Thanks

ag January 19, 2005 10:04

Re: Vorticity magnitude
 
Compute the curl of velocity and take the magnitude of the vector.

agg January 20, 2005 14:21

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)


w0er January 21, 2005 22:59

Re: Vorticity magnitude
 
Could this function be defined into any cfd post.

la7low August 17, 2011 10:07

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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