online_shields:   Calculation of initiation of motion using the Shields criterion


Formulas

τo = γ d So

τ* = τo/[(γs - γ)ds]

U* = (τo/ρ)1/2

R* = (U*ds)/ν


Reference



INPUT DATA:

Stream or river (optional):  

Select:   

SI or U.S. Customary units.
[Default: SI Units].

Particle diameter ds (mm) [mm]:     

Flow depth d (m) [ft]:     

Channel bottom slope So (m/m) [ft/ft]:     

Water temperature T (oC) [oF]:     

OUTPUT:

No data.


            

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