Calculate the initiation of motion of sediment in a fluid flow using simple shields parameter wastewater calculator online. The Shields parameter is a nondimensional unit or number used to calculate the initiation of motion of sediment in a fluid flow. It is also called as Shields criterion or Shields number.
Formula:
τ× = τ / (ρs - ρ)gD
where,τ - is a dimensional shear stress
ρs - is the density of the fluid
ρ - is the density of the sediment
g - is acceleration due to gravity
D - is a characteristic particle diameter of the sediment