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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) ALL CONTENT : Special sessions : Recent advances in eulerian and lagragian large-scale particle image velocimetry
Recent advances in eulerian and lagragian large-scale particle image velocimetry
Author : A. PATALANO(1) (2), C. M. GARC¨ªA(1)(2) , W. BREVIS(3), T. BLENINGER(4), N. GUILLEN(1) (2), L. MORENO(1) & A. RODRIGUEZ(1) (2)
For decades, image based velocimetry techniques, both in the Eulerian and Lagrangian frame of references, have played
an important role for the understanding of several environmental and hydraulics phenomena. The constant technological
developments have made sensors more accessible to the end user, thus they are nowadays a viable option to perform
measurements in a broad range of problems. There have been a scientific and engineering interest to use image based
velocimetry techniques to describe large-scale phenomena and in particular, in fluvial hydraulics, to improve our
understanding of natural and artificial large-scale open channel flows. This paper presents recent contributions, by the
authors of this work, to the development and application of Large-Scale Particle Image Velocimetry (LSPIV) and Large-
Scale Particle Tracking Velocimetry (LSPTV). The work shows the results of the application of LSPIV to the measurement
of flow discharges in Mountain Rivers of the C¨®rdoba province in Argentina. These rivers are characterized by a high flow
variability, mainly due to the occurrence of flash floodings. Due to the extreme flow condition during these events, the use
of intrusive measurement technologies such as current meters or Acoustic Doppler Current Profiler (ADCP) is difficult due
to the high risk for the integrity of instruments and operators. The LSPIV technique has been implemented using remote
digital cameras mounted on a crane, and on an Unmanned Aerial Vehicle (UAV). The work also present the results of
LSPTV in a large-scale physical model experiment. The development of a software for the application of both techniques
is also described in this paper. In particular the pre and post-processing techniques implemented in the software are
described. These techniques, such as data rectification and unsteady movements compensation, are crucial for the
successful application of LSPIV and LSPTV in large-scale conditions.
File Size : 964,751 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Special sessions
Date Published : 19/08/2015
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