exam1 Flashcards
1
Q
What is viscosity
A
A measure of internal, frictional resistance to flow (=
ability to resist shear)
2
Q
How is viscosity determined
A
Viscosity is determined by measuring values of
shear rate vs. shear stress
3
Q
What are Newtonian fluids
A
viscosity is proportional to
the ratio of shear stress to shear rate
4
Q
what are Non-Newtonian Fluids
A
Viscosity changes with changes of shear rate
5
Q
Special case: Viscosity changes with changes of ______
A
shear rate and time
