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Study of flow through rockfill in channel = Etude des écoulements dans une mèche en canal

Soualmia, Amel and Jouini, Manel and Dartus, Denis Study of flow through rockfill in channel = Etude des écoulements dans une mèche en canal. (2013) Physical and Chemical News, 68. 86-91. ISSN 1114-3800

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Abstract

We present the results of an experimental, theoretical, and also numerical study of free surface buried flows that we have undertaken in the laboratory LSTE of INAT. This work was conducted as part of collaboration with the engineering international office MECATER which included the construction of a new channel with large section in INAT, this channel was designed to study the losses in porous media with high porosity for which Darcy's law is no longer applicable. The experiments consisted in determining the evolution of the free surface for different geometrical characteristics of riprap and different flow rates. These tests were used to verify different laws of head loss proposed in the literature, by performing numerical simulations of the evolution of the water surface for each experiment. The analysis of our results shows that the Stephenson’s formula is relevant to calculate the non-linear head loss for flows with high Reynolds number of pore. Furthermore, the simulations have highlighted the important role of porosity. These results should be confirmed by further tests to assess in particular the influence of the slope and to analyze the behavior of the flow at the inlet and outlet of the riprap.

Item Type:Article
Additional Information:Thanks to Best Edition. The original publication is available at http://www.pcnjournal.com
HAL Id:hal-00926423
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Institut National Agronomique de Tunisie - INAT (TUNISIA)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
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Deposited On:05 Dec 2013 15:47

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