Ansys Polyflow can calculate the rate-of-deformation tensor 
on the part of the domain where the velocity field has been computed.
Three components of the rate-of-deformation tensor will be calculated for 2D planar
cases, four components for 2D axisymmetric cases, and six components for all other
cases.
This postprocessor will produce a tensor with three, four, or six components, depending on the problem geometry. Furthermore, the components are based on the selected reference frame (Cartesian for 2D planar and 3D cases, cylindrical for axisymmetric cases). In many cases, the calculation of the local shear rate (see Local Shear Rate) is preferred if only a (generalized) scalar kinematics quantity is needed.
The procedure for specifying the calculation of the rate-of-deformation tensor is as follows:
Create a new sub-task.
Create a sub-task
Select Postprocessor as the sub-task type.
Postprocessor
When prompted, enter a name for the postprocessor sub-task.
In the F.E.M. Task Postprocessor menu, select Rate of deformation tensor.
Rate of deformation tensor
Ansys Polydata will tell you where the calculation will be performed. You can click to continue.
No additional parameters or boundary conditions are required.