Hydrodynamic Drag Measurements of Riparian Woodland Trees and Shrubs
| Project acronym: | HYDIII-CEH-8 |
| Name of Group Leader: | Dr C.A.M. E. Wilson, wilsonca@cardiff.ac.uk |
| User-Project Title: | Hydrodynamic Drag Measurements of Riparian Woodland Trees and Shrubs |
| Facility: | LDB |
| Proceedings TA Project: | Drag force of flexible submerged trees |
| Data Management Report: | Data Management Reports Page You will need to login to view this page |
User Project Objectives:
The main objective of this proposal was to characterise the hydraulic resistance of riparian woodland through direct measurement of hydrodynamic drag and by extending previous studies (Oplatka, 1998; Wilson et al, in press).
The investigation was a combined hydraulic and plant property experimental study in order to:
- Investigate a high resolution drag force-velocity relationship (velocity increments of 0.25 ms-1) for single and multi-stemmed trees and shrubs
- Investigate the degree of plant bending and streamlining through examining the lateral and longitudinal compression of the plants
- Investigate the contribution of foliage to the overall drag of the plant
The vegetation characteristics which were measured included the:
- Determination of the frontal projected area of the plant under flow action and under no flow action with varying velocity conditions
- Determination of the vertical distribution of leaves, biomass and volume
- Determination the modulus of elasticity of the trunk/branches