Experimental and numerical study of granular flow and fence interaction
International audience Dense snow avalanches are regarded as dry granular flows. This paper presents experimental and numerical modelling of deposition processes occurring when a gravity-driven granular flow meets a fence. A specific experimental device was set-up and a numerical model based on shal...
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ftccsdartic:oai:HAL:hal-02586329v1 2023-05-15T13:29:07+02:00 Experimental and numerical study of granular flow and fence interaction Etude expérimentale et numérique de l`interaction entre un écoulement granulaire et une barrière Faug, T. Naaim, Mohamed Naaim Bouvet, F. Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) 2004 https://hal.inrae.fr/hal-02586329 en eng HAL CCSD International Glaciological Society hal-02586329 https://hal.inrae.fr/hal-02586329 IRSTEA: PUB00017063 ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02586329 Annals of Glaciology, International Glaciological Society, 2004, 38, pp.135-138 [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2004 ftccsdartic 2021-08-21T22:45:41Z International audience Dense snow avalanches are regarded as dry granular flows. This paper presents experimental and numerical modelling of deposition processes occurring when a gravity-driven granular flow meets a fence. A specific experimental device was set-up and a numerical model based on shallow water theory and including a deposition model was used. Both tools were used to quantify how the retained volume upstream of the fence is influenced by the channel inclination and the obstacle height. We identified two regimes depending on the slope angle. In the slope angle range where a steady flow is possible, the retained volume has two contributions: deposition along the channel due to the roughness of the bed and deposition due to the fence. The retained volume results only from the fence effects for higher slopes. The effects of slope on the retained volume also showed these two regimes. For low slopes, the retained volume decreases weakly with increasing slope. Comparison between the experiments and computed data showed a good agreement concerning the effect of fence height on the retained volume. Etude expérimentale des avalanches de neige dense : profils de vitesse d`un écoulement développé quasi-permanent. Article in Journal/Newspaper Annals of Glaciology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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language |
English |
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[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Faug, T. Naaim, Mohamed Naaim Bouvet, F. Experimental and numerical study of granular flow and fence interaction |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Dense snow avalanches are regarded as dry granular flows. This paper presents experimental and numerical modelling of deposition processes occurring when a gravity-driven granular flow meets a fence. A specific experimental device was set-up and a numerical model based on shallow water theory and including a deposition model was used. Both tools were used to quantify how the retained volume upstream of the fence is influenced by the channel inclination and the obstacle height. We identified two regimes depending on the slope angle. In the slope angle range where a steady flow is possible, the retained volume has two contributions: deposition along the channel due to the roughness of the bed and deposition due to the fence. The retained volume results only from the fence effects for higher slopes. The effects of slope on the retained volume also showed these two regimes. For low slopes, the retained volume decreases weakly with increasing slope. Comparison between the experiments and computed data showed a good agreement concerning the effect of fence height on the retained volume. Etude expérimentale des avalanches de neige dense : profils de vitesse d`un écoulement développé quasi-permanent. |
author2 |
Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) |
format |
Article in Journal/Newspaper |
author |
Faug, T. Naaim, Mohamed Naaim Bouvet, F. |
author_facet |
Faug, T. Naaim, Mohamed Naaim Bouvet, F. |
author_sort |
Faug, T. |
title |
Experimental and numerical study of granular flow and fence interaction |
title_short |
Experimental and numerical study of granular flow and fence interaction |
title_full |
Experimental and numerical study of granular flow and fence interaction |
title_fullStr |
Experimental and numerical study of granular flow and fence interaction |
title_full_unstemmed |
Experimental and numerical study of granular flow and fence interaction |
title_sort |
experimental and numerical study of granular flow and fence interaction |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.inrae.fr/hal-02586329 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02586329 Annals of Glaciology, International Glaciological Society, 2004, 38, pp.135-138 |
op_relation |
hal-02586329 https://hal.inrae.fr/hal-02586329 IRSTEA: PUB00017063 |
_version_ |
1765998550894772224 |