# Dynamic Shear Viscosity

Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Dynamic shear viscosity, abbreviated as $$\mu$$ (Greek symbol mu), is the resistance to shearing flow of a fluid, where adjacent layers move parallel to each other in different ways.

## Dynamic Shear Viscosity Formula

 $$\large{ \mu = \frac { F \; y }{ A \; u } }$$

### Where:

 Units English Metric $$\large{ \mu }$$  (Greek symbol mu) = dynamic shear viscosity $$\large{\frac{lbf-sec}{ft^2}}$$ $$Pa-s$$ $$\large{ A }$$ = area of each plate $$\large{ft^2}$$ $$\large{m^2}$$ $$\large{ F }$$ = applied force $$\large{lbf}$$ $$\large{N}$$ $$\large{ y }$$ = separation distance $$ft$$ $$m$$ $$\large{ u }$$ = speed of movement $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$