2014/10/13 by Timothy I. Marjoribanks, Richard J. Hardy, R. J. Hardy +2 · 1 citation
Agricultural and Biological Sciences · Environmental Science · #Hydrology and Sediment Transport Processes #Plant Water Relations and Carbon Dynamics #Soil erosion and sediment transport
paper · doi:10.1080/00221686.2014.948502
crossref issued 2014/10/13 · crossref published 2014/10/13 · crossref published-online 2014/10/13 · openalex publication_date 2014/10/13 · crossref created 2014/10/13 · crossref published-print 2014/11/02 · openalex created_date 2016/06/24 · crossref deposited 2018/10/05 · crossref indexed 2026/07/29 · openalex updated_date 2026/08/01
In this paper, we present and apply a new three-dimensional model for the prediction of canopy-flow and turbulence dynamics in open-channel flow. The approach uses a dynamic immersed boundary technique that is coupled in a sequentially staggered manner to a large eddy simulation. Two different biomechanical models are developed depending on whether the vegetation is dominated by bending or tensile forces. For bending plants, a model structured on the Euler–Bernoulli beam equation has been developed, whilst for tensile plants, an N-pendula model has been developed. Validation against flume data shows good agreement and demonstrates that for a given stem density, the models are able to simulate the extraction of energy from the mean flow at the stem-scale which leads to the drag discontinuity and associated mixing layer.