Three-dimensional numerical modeling of flows over a natural dune field

Details

Serval ID
serval:BIB_74211169B83C
Type
Inproceedings: an article in a conference proceedings.
Collection
Publications
Title
Three-dimensional numerical modeling of flows over a natural dune field
Title of the conference
River Flow 2006, Vols 1 and 2
Author(s)
Hardy  R. J., Parsons  D. R., Best  J. L., Lane  S. N., Kostaschuk R., Orfeo O.
ISBN
0-415-40815-6
Publication state
Published
Issued date
2006
Editor
Ferreira RML, Alves CTL, Leal GAB, Cardoso AH
Series
Proceedings and Monographs in Engineering, Water and Earth Sciences
Pages
1077-1083
Notes
International Conference on Fluvial Hydraulics, Lisbon, PORTUGAL, SEP
06-08, 2006
Abstract
Our ability to numerically predict the interaction between complex
topography and three dimensional flow at large scales (similar to 1 km)
has yet to be fully developed. This is the result of our inability to
design numerically stable meshes for complex topographies at these
spatial resolutions. This paper deals with the numerical simulation of
flow over a natural dune field located in the Rio Parana, NE Argentina.
The methodology is based upon the development and application of a new
five term porosity algorithm that modifies the mass conservation
equation within a regular Cartesian mesh. Bathymetric measurements were
made in the field using a multibeam echo sounder which provided an
unparalleled topographic dataset to test this new numerical modeling
approach. Measurements of flow were made using an acoustic Doppler
current profiler and are used as inlet boundary conditions and
validation data. The results demonstrate simple flow acceleration due
to topographic forcing over the dune stoss and expansion and
deceleration over the dune lee.
Web of science
Create date
03/02/2011 14:40
Last modification date
20/08/2019 14:31
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