3.13  Rate of Deformation Tensor

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 Let

Where D = symmetric part of velocity gradient.

D  =     = Rate of deformation tensor

W = anti-Symmetric part of velocity gradient

W  =     = Spin tensor

Thus   

     describes the rate of change of length of     

     describes the rate of rotation of 

Next:  3.14  Spin tensor and Angular velocity vector 

10/02/01 0:30:04