1 research outputs found
Simulating the Dynamic Behavior of Shear Thickening Fluids
While significant research has been dedicated to the simulation of fluids,
not much attention has been given to exploring new interesting behavior that
can be generated with the different types of non-Newtonian fluids with
non-constant viscosity. Going in this direction, this paper introduces a
computational model for simulating the interesting phenomena observed in
non-Newtonian shear thickening fluids, which are fluids where the viscosity
increases with increased stress. These fluids have unique and unconventional
behavior, and they often appear in real world scenarios such as when sinking in
quicksand or when experimenting with popular cornstarch and water mixtures.
While interesting behavior of shear thickening fluids can be easily observed in
the real world, the most interesting phenomena of these fluids have not been
simulated before in computer graphics. The fluid exhibits unique phase changes
between solid and liquid states, great impact resistance in its solid state and
strong hysteresis effects. Our proposed approach builds on existing
non-Newtonian fluid models in computer graphics and introduces an efficient
history-based stiffness term that is essential to produce the most interesting
shear thickening phenomena. The history-based stiffness is formulated through
the use of fractional derivatives, leveraging the fractional calculus ability
to depict both the viscoelastic behavior and the history effects of
history-dependent systems. Simulations produced by our method are compared
against real experiments and the results demonstrate that the proposed model
successfully captures key phenomena observed in shear thickening fluids.Comment: Work being submitted for peer revie