TY - GEN
T1 - Optical techniques for surface velocity and bed elevation measurements in a fluvial physical scale model
AU - El Kadi Abderrezzak, K.
AU - Die Moran, A.
AU - Jodeau, M.
AU - Lebert, F.
PY - 2012/11/1
Y1 - 2012/11/1
N2 - An undistorted, mobile-bed physical scale model (scale 1:40) representing a pilot morphological restoration site on the Old Rhinewas used to assess different sediment transport restoration strategies. Bathymetry measurements using a laser triangulation scanner and surface velocity measurements using the Large-Scale Particle Image Velocimetry (LSPIV) technique have been performed. Tests show that sediment transport can be restored through removal of the bank rip rap and modification of the existing groynes, thus promoting bank erosion. Bed elevation measurements confirm the effectiveness of this strategy in terms of eroded material volume and bathymetry changes. LSPIV measurements show that erosion is caused by accelerated flow induced by the modified groynes that deflect the flow towards the bank, not by eddy flow structures created downstream of groynes.
AB - An undistorted, mobile-bed physical scale model (scale 1:40) representing a pilot morphological restoration site on the Old Rhinewas used to assess different sediment transport restoration strategies. Bathymetry measurements using a laser triangulation scanner and surface velocity measurements using the Large-Scale Particle Image Velocimetry (LSPIV) technique have been performed. Tests show that sediment transport can be restored through removal of the bank rip rap and modification of the existing groynes, thus promoting bank erosion. Bed elevation measurements confirm the effectiveness of this strategy in terms of eroded material volume and bathymetry changes. LSPIV measurements show that erosion is caused by accelerated flow induced by the modified groynes that deflect the flow towards the bank, not by eddy flow structures created downstream of groynes.
UR - https://www.scopus.com/pages/publications/84867962341
M3 - Conference contribution
AN - SCOPUS:84867962341
SN - 9781466575523
T3 - River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics
SP - 1265
EP - 1272
BT - River Flow 2012 - Proceedings of the International Conference on Fluvial Hydraulics
T2 - International Conference on Fluvial Hydraulics, River Flow 2012
Y2 - 5 September 2012 through 7 September 2012
ER -