Mean Shear Rate#

Mean shear rate = {yes | no}

Description / Usage#

The mean shear rate is defined as

\[4\sqrt{II_D}\]

where \(II_D\) is the second invariant of D, the strain-rate tensor,

\[\boldsymbol{D}\equiv[\nabla\boldsymbol{v}+(\nabla\boldsymbol{v})^T]\]

associated with the Navier-Stokes equations. This variable is called SHEAR in the output EXODUS II file.

The permissible values for this postprocessing option are:

yes	Calculate the mean shear rate.
no	Do not calculate the mean shear rate.

Following is a sample card:

Mean shear rate = yes

No Discussion.