TUFLOW General Discussion: Difference between revisions

The Heschel-Bulkley model takes aspects from both the Bingham Plastic Model and the Power Law Model resulting in the following.

 

 

It should be seen that where Ƭ0=0, the Herschel-Bulkley equation is the same as the power law model. If n is 1, then the Herschel-Bulkley equation is the same as the Bingham Plastic model. If Ƭ0=0 and n =1, then the Herschel-Bulkley equation is the same as the Newtonian fluid approach. By using the Herschel-Bulkley equation as a Newtonian model, it does allow you to define the viscosity coefficient for the fluid. In your case you’ll need to convert the viscosity from centiStokes to Pa S (if using an N value of 1). You can then define the fluid density using the <font color="blue"><tt>Density of Water</tt></font> command you mention.