Oct
10
In physical chemistry, what is name of fluid property where viscosity decreases as velocity increases?
Filed Under Physical Chemistry
Ketchup and chocolate syrup are examples of what I’m am thinking.
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3 Responses to “In physical chemistry, what is name of fluid property where viscosity decreases as velocity increases?”
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I think what you are looking for is the linear viscousity stress tensor.
There is a complete mathematical discussion of it here:
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
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”.