Validation of Observed Bedload Transport Pathways Using Morphodynamic Modeling

Mineault-Guitard, A., Rennie, C. and Williams, R.D. (2016) Validation of Observed Bedload Transport Pathways Using Morphodynamic Modeling. In: River Flow 2016: Eighth International Conference of Fluvial Hydraulics, Iowa City, IA, USA, 11-14 July 2016, (Unpublished)

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Abstract

Phenomena related to braiding, including local scour and fill, channel bar development, migration and avulsion, make numerical morphodynamic modeling of braided rivers challenging. This paper investigates the performance of a Delft3D model, in a 2D depth-averaged formulation, to simulate the morphodynamics of an anabranch of the Rees River (New Zealand). Model performance is evaluated using data from field surveys collected on the falling limb of a major high flow, and using several sediment transport formulas. Initial model results suggest that there is generally good agreement between observed and modeled bed levels. However, some discrepancies in the bed level estimations were noticed, leading to bed level, water depth and water velocity estimation errors.

Item Type:Conference Proceedings
Status:Unpublished
Refereed:Yes
Glasgow Author(s) Enlighten ID:Williams, Dr Richard
Authors: Mineault-Guitard, A., Rennie, C., and Williams, R.D.
College/School:College of Science and Engineering > School of Geographical and Earth Sciences
Copyright Holders:Copyright © 2017 The Authors
Publisher Policy:Reproduced with the permission of the authors.
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