sedimentation velocity in pipes and ducts

 

 

The sedimentation rate is the minimum speed that a flow must be to carry, rather than deposit, sediment. The sedimentation velocityis given by Stokes' law

sedimentation velocity pipes ducts

where w is the speed of sédimentation, ρ is the density (the indices p and f indicate particle and fluid respectively ), g is the acceleration due to gravity, r is the radius of the particle and μ is the dynamic viscosity of the fluid.

If the velocity of flow is greater than the deposit velocity ( sedimentation velocity) the aggregate continues downstream

The interface for calculating sedimentation rate in the Tools MECAFLUX

The interface for calculating sedimentation rate in the Tools MECAFLUX

A minimum speed alert sedimentation can thus be resolved in the interface sizing ducts to detect the maximum diameter does not exceed a project network of fluid loaded. The transport of particles as the aspiration of copal or stormwater must be sized according to the sedimentation rate to prevent particle deposition

the interface sizing ducts

Sizing pipes fluid ducts

 

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 mis à jour le 10 /2009

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