online_scour_jainandfisher:  Calculation of bridge scour using Jain and Fisher's equation   

Fr1 = v1/(g y1)1/2

Vc = Ku y1/6D501/3

Fc = Vc /(gy)1/2

For clear-water scour (F - Fc ≤ 0.2):

ys = 1.84 a Fc0.25 (y /a)0.3

For live-bed scour (F - Fc > 0.2):

ys = 2 a (F - Fc)0.25 (y /a)0.5


Reference


SAMPLE INPUT      [Main page]     [Description]

  • Flow depth directly upstream of the pier y1 =  1.0 m

  • Mean flow velocity directly upstream of the pier v1 =  1.0 m/s

  • Pier width in a horizontal direction normal to the flow a =  1.0 m

  • Median diameter of the bed material D50 =  1.0 mm

SAMPLE OUTPUT     

         Scour depth ys =  1.227 m


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