Viscosity of common fluids

Classification of fluid

Fluids can be divided into Newtonian fluids and non-Newtonian fluids. A Newtonian fluid is a fluid whose viscosity value does not change with the shear rate, but remains constant. A fluid whose viscosity varies with rotational speed/shear rate is called a non-Newtonian fluid. Non-Newtonian fluids are divided into two categories, one category: the fluid whose viscosity only changes with the change of the shear rate; the second category: the fluid whose viscosity changes with the change of the shear rate and the extension of the measurement time.

Viscosity of Common Fluids

Viscosity refers to the fluidity or immobility of a substance and is measured in centipoises.

Water has a viscosity of 1 centipoise and flows easily.

1 cps = water; 3.2 cps = milk; 16.5 cps = cream; 34.6 cps = vegetable oil; 176 cps = tomato paste; 880 cps = glycerin; 1760 cps = molasses; 3000 cps = glue; 15200 cps = sour cream

Kinematic viscosity is the ratio of the dynamic viscosity of a liquid to the density of the fluid at the same temperature. The unit is m2/s. Indicated by the lowercase letter v.

Note: The unit that has been used is St (S)

The rate relationship between St (S) and (m2)/s is: 1m2/s=1000000cSt. (where "cSt" is read as "centistokes")