![]() ![]() The problem you are having may be that your suspension may be thixotropic or rheopectic. For such fluids, viscosity is no longer really a state function. This means that the vicosity not only depends on (a) the fluid in question and (b) the shear stress at a particular time, but also (c) the entire history of shear stress applied over the lifetime of the fluid sample in order to be able to characterize its viscosity. Thixotropic and rheopectic fluids have complex, time-dependent shear behavior. But at least for these non-Newtonian fluids, viscosity remains essentially a " state function" all you need to know is (a) the fluid in question and (b) the sheer stress in order to obtain an apparent viscosity. This is because the slope of the shear rate vs. For these types of fluids, apparent viscosity is a function of the shear stress. Some examples of these are dilatant fluids and pseudoplastic fluids. You alluded to non-Newtonian fluids in your question.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |