Numerical Calculation of Bank Erosion and Free Meandering

DOI 8 Citations

Bibliographic Information

Other Title
  • 河岸侵食と自由蛇行の数値計算

Abstract

A numerical model is proposed to investigate free meandering of river. Flow field, bed deformation, bank erosion and channel migration are calculated numerically with a general non-orthogonal coordinate system which can be applied to moving boundary conditions. Flow field is calculated from two dimensional momentum equations and continuity equation. Bed deformation is calculated from continuity equation of bed load transport. Bank erosion and deposition is estimated from critical slope of bank material and emergence of bed due to the bed deposition. Time dependent change of channel geometry is calculated with an iteration process of these procedures. Calculated results are favorably compared with experimental results with movable bed and bank, and thus the accuracy of new model is verified.

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Details 詳細情報について

  • CRID
    1390001205169709568
  • NII Article ID
    130004042453
  • DOI
    10.2208/prohe.40.921
  • ISSN
    18849172
    09167374
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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