Pier scour within long contraction in cohesive sediment bed

Susanta Chaudhuri, Santosh Kumar Singh*, Koustuv Debnath, Mrinal K. Manik

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


In the present study, an attempt has been made to study the bridge pier scour embedded long contraction for the bed sediment prepared by a mixture of clay and fine sand with varying proportions having a specific range of antecedent moisture content. Results particularly focused on the clay–sand mixed cohesive bed at varying clay fractions of the sediment bed, approach flow velocity, contraction ratio and different pier shapes, on maximum equilibrium scour depth for pier scour within long contraction. Further, regression based equations for the estimation of non-dimensional maximum scour depth for piers within long contraction in clay–sand mixed cohesive bed embedded were proposed.

Original languageEnglish
Pages (from-to)417-441
Number of pages25
JournalEnvironmental Fluid Mechanics
Issue number2
StatePublished - 1 Apr 2018
Externally publishedYes


  • Cohesive sediment
  • Flume study
  • Long contraction
  • Pier scour


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