From Wikipedia, the free encyclopedia
This article is about extensional viscosity. For other uses, see Rheology.
- This parameter is often used for characterizing polymer solutions.
Extensional viscosity can be measured using rheometers that apply extensional stress. Acoustic rheometer is one example of such devices.
- is the extensional viscosity or elongational viscosity
- is the normal stress:
- is the rate of strain:
- (Trouton's law)
- Barnes, H.A. "A handbook of elementary rheology", Institute of non-Newtonian Fluid Mechanics, 2000
|This fluid dynamics–related article is a stub. You can help Wikipedia by expanding it.|