online_initiation_froude:  Calculation of minimum Froude number for initiation of motion   
Formula:

F ≥ k d1/6 (ds / d)1/2 n-1

SI Units (metric):  k = 0.082, d in m, and ds in mm.
U.S. Customary Units:  k = 0.067, d in ft, and ds in mm.

Reference:

http://initiation.sdsu.edu
INPUT DATA:

Select:   

Flow depth d :      

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Particle size ds :      

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Manning's friction coefficient n :      

OUTPUT:

Froude F ≥   
Warning: Undefined variable $minimumfroude in /var/www/html/ponce/onlineinitiationfroude.php on line 175

Deprecated: substr(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/html/ponce/onlineinitiationfroude.php on line 175
 
Warning: Undefined variable $minimumfroudeunits in /var/www/html/ponce/onlineinitiationfroude.php on line 175

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