Fluid viscosity is generally measured in two different terms Dynamic Viscosity () and Kinematic Viscosity ( v). Dynamic Viscosity is also called as Absolute Viscosity and it is related to Kinematic Viscosity.


Kinematic Viscosity, v  = /

It means that Kinematic Viscosity is the ratio of Dynamic Viscosity of one substance to the density of the same substance.


S.I. unit of Kinematic Viscosity is m2/s

Sometimes it is also written in form of Stokes (St)

1 Stoke = 10-4m2/s

             = 1 cm2/s

In centiStokecSt),

1 cSt = 10-6m2/s                                   (1 Stoke = 100 cSt)


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