Advances in 3D modeling of free-forming meander formation from initially straight alluvial channels

Nils Rüther, Nils R.B. Olsen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

The present paper describes the current state of art when using computational fluid dynamics (CFD) for predicting free forming migration of meander bends. On the basis of the simulation of water and sediment flow in an alluvial channel, different algorithms and parameters are investigated. The simulation was started from an initially straight grid, with neither sediment feed nor any perturbation at the inflow boundary. The model computed the river bed evolution over a real time period of three days. The results were compared to a physical model study and showed that the three dimensional modeling of free forming meander is one step closer of having a universal predictor for alluvial channel migration. However, there are uncertainties that have to be clarified in future investigations.

Original languageEnglish
Title of host publication31st IAHR Congress 2005
Subtitle of host publicationWater Engineering for the Future, Choices and Challenges
EditorsJun Byong-Ho, Il Lee Sang, Seo Il Won, Choi Gye-Woon
PublisherKorea Water Resources Association
Pages1465-1472
Number of pages8
ISBN (Electronic)8987898245, 9788987898247
StatePublished - 2005
Externally publishedYes
Event31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges - Seoul, Korea, Republic of
Duration: 11 Sep 200516 Sep 2005

Publication series

Name31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges

Conference

Conference31st IAHR Congress 2005: Water Engineering for the Future, Choices and Challenges
Country/TerritoryKorea, Republic of
CitySeoul
Period11/09/0516/09/05

Keywords

  • Alternation
  • Bank erosion
  • Computational fluid dynamics
  • Geomorphology
  • Meandering rivers
  • Numerical modeling
  • Sediment transport

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