Surface-based fractional transport predictor: Deterministic or stochastic

Guohong Duan, Brian D. Barkdoll

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Stochastic bed load transport formulas for nonuniform sediment exist, but most of them do not account for the composition of surface material to predict fractional transport rate. This study transformed a surface-based bed-load transport predictor to a stochastic one by approximating the fluctuation of bed-shear stress with a standard log-normal distribution. The deterministic predictor underpredicts fractional transport rate at low values of bed-shear stress and Reynolds number. The modified stochastic predictor predicts fractional transport rate more accurately and converges to the deterministic one at high shear stresses.

Original languageEnglish (US)
Pages (from-to)350-353
Number of pages4
JournalJournal of Hydraulic Engineering
Volume134
Issue number3
DOIs
StatePublished - Mar 2008

Fingerprint

shear stress
Shear stress
bottom stress
bedload
Normal distribution
Reynolds number
Sediments
Chemical analysis
sediment
rate
material
distribution

Keywords

  • Bed materials
  • Predictions
  • Sediment transport
  • Shear stress

ASJC Scopus subject areas

  • Water Science and Technology
  • Civil and Structural Engineering
  • Mechanical Engineering

Cite this

Surface-based fractional transport predictor : Deterministic or stochastic. / Duan, Guohong; Barkdoll, Brian D.

In: Journal of Hydraulic Engineering, Vol. 134, No. 3, 03.2008, p. 350-353.

Research output: Contribution to journalArticle

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