Rotating concentric-cylinder viscometer
Shear rate, shear stress and torque (or, given a measured torque, the dynamic viscosity) for a rotating concentric-cylinder viscometer, from spindle and reservoir geometry.
Shear rate (from viscosity), γ̇0.07853981633974488 ×10³ Hz
Shear stress (from viscosity), τ7.853981633974489 Pa
Friction torque (from viscosity), M0.04934802200544682 ×10⁻³ N·m
Shear rate (from torque), γ̇0.07853981633974488 ×10³ Hz
Shear stress (from torque), τ7.85397813169885 Pa
Dynamic viscosity (from torque), η0.0999999554076416 Pa·s
Method & references
- Rotating concentric-cylinder (coaxial cylinder) viscometer, direct and inverse forms.
The computation is a literal port of the original client-side JavaScript from /calculators/e5_2.htm. Results are verified equal to the original by an automated golden-master test. No formula has been re-derived or “improved”.