Raindrop and flow interactions for interrill erosion with wind-driven rain

G. Erpul, D. Gabriels, L. Darell Norton, C. Dennis, C.H. Huang, S.M. Visser

    Research output: Contribution to journalArticleAcademicpeer-review

    11 Citations (Scopus)

    Abstract

    Wind-driven rain (WDR) experiments were conducted to evaluate the interrill component of the Water Erosion Prediction Project model with a two-dimensional experimental set-up in a wind tunnel. Synchronized wind and rain simulations were applied to soil surfaces on windward and leeward slopes of 7, 15 and 20%. Since WDR fall trajectory varied with horizontal wind velocities of 6, 10, and 14 m s-1, magnitude of raindrop normal and lateral stresses on flow at the impact-flow boundary also changed and differentially directed lateral jets of raindrop splashes with respect to downward flows occurred. To account for interactions between raindrop impact and interrill shallow flow, a vector approach with kinetic energy fluxes of both raindrop splashes and flow were used and this resulted in greater correlations in predicting sediment delivery rates
    Original languageEnglish
    Pages (from-to)548-557
    JournalJournal of Hydraulic Research
    Volume51
    Issue number5
    DOIs
    Publication statusPublished - 2013

    Keywords

    • sediment transport capacity
    • splash-saltation
    • water erosion
    • sand detachment
    • overland-flow
    • soil-erosion
    • impact
    • prediction
    • tunnel
    • model

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