FK 40 - Tri-Canada

Looking at two parallel plates with the surface A and the distance y, displaced against each
other as a result of a force F with a velocity v, a force F opposes to this displace-
action reaction
ment and increases with increasing dynamic viscosity of t he medium bet ween t he t wo
plates.
The ratio of F to A is called shear stress τ.
The shear st ress τ increases in proportion to the shear velocity D and the dynamic
viscosity η.
The ratio of v to y is defined as shear velocity D.
Thus the resulting dynamic viscosity η:
Pump technology
terms
dynamic viscosity η