Stokes Law Calculator
Stoke's law states that at low velocities the frictional force on a spherical body moving through a fluid at constant velocity is equal to 6 π times the product of the velocity, the fluid viscosity, and the radius of the sphere. In short, a sphere moving through a viscous fluid is directly proportional to the velocity of the sphere as well as the radius of the sphere, and the viscosity of the fluid.
Formula
Fall or Settling Velocity :
Vt = gd2 (ρp - ρm)/18μ
Acceleration of Gravity :
g= 18 μ Vt /d2(ρp - ρm)
Particle Diameter :
d= √18 μ Vt /g (ρp - ρm)
Density of Medium :
ρm = ρp - 18 μ Vt/ d2
Particle Density :
ρp = 18 μ Vt /d2+ ρm
Viscosity of Medium :
μ = gd2( ρp - ρm)/18 Vt
Where,
Vt = Fall or Settling Velocity,
g = Acceleration of Gravity,
d = Particle Diameter,
ρm = Density of Medium,
ρp = Particle Density,
μ = Viscosity of Medium.