# Dynamic Viscosity

Written by Jerry Ratzlaff. Posted in Fluid Mechanics

Dynamic viscosity also called "absolute viscosity" of "simple viscosity". The basic unit of absolute viscosity is the "poise". The most common unit for expressing absolute viscosity is the "centipoise" (1/100 of a poise).

The value of dynamic viscosity is measured by placing two plates together with a fluid betweeen them. One plate is introduced to a known shear stress. The plate will move with a give velocity. The velocity and shear stress are combined to determine the dynamic viscosity.

• Abbreviated as $$\mu$$ (Greek symbol mu)