Abstract
Conceptual wetlands of simple geometry and randomly distributed vegetation fields with imposed statistical properties
(stem density average, variance and correlation length) were generated to assess their performance in the removal of
contaminants. The hydrodynamics was solved using a two-dimensional depth-averaged model where flow resistance is
generated by both bed friction and stem drag. Mass transport was solved using an advection-dispersion model with a
decay rate dependent on the local properties of the vegetation field. Wetland performance was found to depend primarily
on average vegetation density, but an increasingly significant effect on mass removal is observed as stem density
variance and correlation length increase.
(stem density average, variance and correlation length) were generated to assess their performance in the removal of
contaminants. The hydrodynamics was solved using a two-dimensional depth-averaged model where flow resistance is
generated by both bed friction and stem drag. Mass transport was solved using an advection-dispersion model with a
decay rate dependent on the local properties of the vegetation field. Wetland performance was found to depend primarily
on average vegetation density, but an increasingly significant effect on mass removal is observed as stem density
variance and correlation length increase.
| Original language | English |
|---|---|
| Title of host publication | E-proceedings of the 36th IAHR World Congress |
| Editors | Arthur Mynett |
| Publisher | IAHR |
| Number of pages | 4 |
| ISBN (Print) | 978-90-824846-0-1 |
| Publication status | Published - Jul 2015 |
| Event | 36th IAHR World Congress 2015: Deltas of the Future and What Happens Upstream - The Hague, Netherlands Duration: 28 Jun 2015 → 3 Jul 2015 |
Conference
| Conference | 36th IAHR World Congress 2015 |
|---|---|
| Country/Territory | Netherlands |
| City | The Hague |
| Period | 28/06/15 → 3/07/15 |