TUFLOW General Discussion: Difference between revisions
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For a non-Newtonian fluid, the shear stress varies non-linearly with shear rate, this is what is represented with the power law model in the graph above.
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We then have Bingham plastics which have a linear shear stress to shear rate relationship but this time an offset which means there needs to be some force for the fluid to move, but then the shear stress varies linearly with shear rate.
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The Heschel-Bulkley model takes aspects from both the Bingham Plastic Model and the Power Law Model resulting in the following.
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