Seminar
Modeling thixotropic yield stress fluids as a limit of viscoelasticity
Tuesday, January 12, 2016 2:15 PM;
JGU Mainz, Mathematics, Hilbert-Raum
Speaker: Michael Renardy; Virginia Tech, USA
Many common fluids, such as shampoo and ketchup, show yield stress behavior
which is more complex than that of simple models like the Bingham fluid. Phenomena
which are observed include yield stress hysteresis, shear banding, delayed yielding
and thixotropy. It will be shown how such phenomena can be obtained from a viscoelastic
model, in the limit where the relaxation time is large. The presence of a small parameter
naturally makes the model amenable to methods of singular perturbation theory.
The dynamics of yielding and unyielding, oscillatory flow, and the temporal development
of shear bands will be discussed.
Calendar
Contact
- Scientific Coordinator of the TRR 146
- Dr. Giovanni Settanni
- Staudingerweg 9
- D-55128 Mainz
- trr146e-qEwvoOb@LuroJpfuni-mainz.de