In physical chemistry, what is name of fluid property where viscosity decreases as velocity increases?

Question

Ketchup and chocolate syrup are examples of what I'm am thinking.

Answer 1

A fluid whose viscosity decreases with increasing shear is said to be "pseudoplastic".

A fluid whose viscosity stays the same with increasing shear is said to be "Newtonian".

A fluid whose viscosity increases with increasing shear is said to be "dilatant".

Answer 2

1) Elizabeth Alice 1) Atticus Bran 2) Amelia Eleanor 2) Richard Andy 3) Juliet Portia 3) Octavius Adam

Answer 3

When the temperature increases, viscosity decreases and flows faster.
Ketchup has added calcium so that it flows slower.

I did find shear strain referring to lava
There was one other reference to pump engineering where increased temp mae pump flow less due to slippage

Answer 4

I think what you are looking for is the linear viscousity stress tensor.

There is a complete mathematical discussion of it here:

http://en.wikipedia.org/wiki/Viscosity