Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/22385

Title: Patch-scale representation of vegetation within hydraulic models
Authors: Marjoribanks, Timothy I.
Hardy, Richard J.
Lane, Stuart N.
Tancock, Matthew J.
Issue Date: 2016
Publisher: © Wiley
Citation: MARJORIBANKS, T.I. ... et al, 2016. Patch-scale representation of vegetation within hydraulic models. Earth Surface Processes and Landforms, DOI: 10.1002/esp.4015
Abstract: Submerged aquatic vegetation affects flow, sediment and ecological processes within rivers. Quantifying these effects is key to effective river management. Despite a wealth of research into vegetated flows, the detailed flow characteristics around real plants in natural channels are still poorly understood. Here we present a new methodology for representing vegetation patches within computational fluid dynamics (CFD) models of vegetated channels. Vegetation is represented using a Mass Flux Scaling Algorithm (MFSA) and drag term within the Reynolds-Averaged Navier-Stokes Equations, which account for the mass and momentum effects of the vegetation respectively. The model is applied using three different grid resolutions (0.2, 0.1 & 0.05 m) using time-averaged solution methods and compared to field data. The results show that the model reproduces the complex spatial flow heterogeneity within the channel and that increasing the resolution leads to enhanced model accuracy. Future applications of the model to the prediction of channel roughness, sedimentation and key eco-hydraulic variables are presented, likely to be valuable for informing effective river management.
Description: This paper is embargoed until August 2017.
Sponsor: The work was funded under a NERC PhD studentship and NERC grant NE/K003194/1.
Version: Accepted for publication
DOI: 10.1002/esp.4015
URI: https://dspace.lboro.ac.uk/2134/22385
Publisher Link: http://dx.doi.org/10.1002/esp.4015
ISSN: 0197-9337
Appears in Collections:Closed Access (Civil and Building Engineering)

Files associated with this item:

File Description SizeFormat
ESPL_rev2.pdfAccepted version1.34 MBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.