How to set non-Newtonian viscosity for a fluid in a Fluent simulation?

This article will inform the reader on how to activate a non-Newtonian viscosity model for a fluid viscosity when using Fluent.  The non-Newtonian viscosity models are not exposed by default when using the viscosity pull-down for a fluid material.  This article informs on how to expose those models for selection. 

Step_A: 

1. Enter the text “newton” into the Quick Search.
2. Observe the TUI command generated.
3. Click on the TUI command.

Step_B: 

The TUI command should automatically appear in the console. 
Type enter and enter y to enable. 

              /define/models/viscous/turbulence-expert/turb-non-newtonian? 

              Enable turbulence for non-Newtonian fluids? [no] y 

Step_C: 

1. Enter the materials panel for the desired fluid.
2. Access the viscosity pull-down.
3. Scroll down to access the added viscosity models.
   
4. Select from one of the new options:

Cross 
Hershel-Bulkley 
Carreau 
Non-Newtonian-Power-Law 

In conclusion, the turbulence for non-Newtonian fluids needs to be activated via a TUI to be able to activate a non-Newtonian fluid viscosity.