Journal of Ecohydraulics

The importance of riparian plant orientation in river flow: implications for flow structures and drag

Here is the link to our paper in the Journal of Ecohydraulics (https://doi.org/10.1080/24705357.2019.1573648).

In the paper we present results from a series of numerical experiments on the flow structures and drag response of riparian plants. First, we investigate three different specimens from the same species. Second, we incrementally rotate a specimen (defoliated and foliated) to modify the flow-facing structure.

Results question the extent to which generalized velocity profiles can be quantified for morphologically complex plants. Incremental changes in plant orientation are shown to introduce gradual changes to the downstream velocity field and cause a substantial range in the quantified drag response.

The paper recommends that future studies of flow–vegetation interactions at the plant-scale should explicitly consider and justify the flow-facing structure of the plant to the incident flow. This includes justification for the selection of individual plant specimens, and justification of how plants are positioned and orientated in the flume/numerical domain.

Citation:
Boothroyd, RJ. Hardy, RJ. Warburton, J. and Marjoribanks, TI. (2019). The importance of riparian plant orientation in river flow: implications for flow structures and drag. Journal of Ecohydraulics. 10.1080/24705357.2019.1573648.