online_scour_froehlich (1989):  Calculation of abutment scour using Froehlich (1989) equation   


Fr = v /(gya)1/2

(ys / ya) = 2.27 K1 K2 (L' / ya)0.43 Fr 0.61 + 1


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

  • Length of flow obstructed by the embankment L' =  5.0 m

  • Angle of embankment with the flow θ =  90 degrees

  • Abutment shape :  Vertical wall

SAMPLE OUTPUT     

         Scour depth ys =   3.26 m


Documents in Portable Document Format (PDF) require Adobe Acrobat Reader 5.0 or higher to view; download Adobe Acrobat Reader.