Wind-tunnel study of snowdrift around avalanche defence structures
International audience Avalanche defense structures such as retarding dams and breaking mounds are widely used to protect residential areas and other kinds of infrastructure. The effect of the defense structures depends largely on their effective height relative to the velocity, volume and flow dept...
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ftccsdartic:oai:HAL:hal-02584145v1 2023-05-15T13:29:07+02:00 Wind-tunnel study of snowdrift around avalanche defence structures Etude en soufflerie de la formation de congères autour de structures paravalanches Jaedicke, C. Naaim Bouvet, F. Granig, M. NGI OSLO NOR Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) 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-02584145 en eng HAL CCSD International Glaciological Society hal-02584145 https://hal.inrae.fr/hal-02584145 IRSTEA: PUB00016517 ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02584145 Annals of Glaciology, International Glaciological Society, 2004, 38, pp.325-330 SOUFFLERIE MODELE REDUIT [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2004 ftccsdartic 2021-04-17T22:43:10Z International audience Avalanche defense structures such as retarding dams and breaking mounds are widely used to protect residential areas and other kinds of infrastructure. The effect of the defense structures depends largely on their effective height relative to the velocity, volume and flow depth of the avalanche. Snow depositions from earlier avalanches as well as from drifting snow can significantly alter the effective height of defence structures. Different designs of avalanche breaking mounds and retarding dams were tested in the Cemagref (Grenoble, France) wind tunnel for their effect on drifting snow. Examples included dams and mounds of different sizes and heights. The models were tested in a wind tunnel with sand particles subjected to different wind directions. The resulting depositions were scanned with a laser system to obtain a three dimensional picture of the accumulation pattern. The resulting depositions were scanned with a laser system to obtain a three-dimensional picture of the accumulation pattern. The results show that the accumulated snow varies widely with the design of the structure for a given wind direction. Most snow is accumulated around narrow mounds, with least accumulation observed around mounds covering a smaller relative area of the avalanche path. The data obtained can be used to study the effect of the depositions on the retarding effect of the avalanche defence structures. However, because the similarity criteria for studying the interaction between structures and saltating particles in a wind tunnel cannot be met, the transfer of the results to reality must be performed with caution. Article in Journal/Newspaper Annals of Glaciology Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
SOUFFLERIE MODELE REDUIT [SDE]Environmental Sciences |
spellingShingle |
SOUFFLERIE MODELE REDUIT [SDE]Environmental Sciences Jaedicke, C. Naaim Bouvet, F. Granig, M. Wind-tunnel study of snowdrift around avalanche defence structures |
topic_facet |
SOUFFLERIE MODELE REDUIT [SDE]Environmental Sciences |
description |
International audience Avalanche defense structures such as retarding dams and breaking mounds are widely used to protect residential areas and other kinds of infrastructure. The effect of the defense structures depends largely on their effective height relative to the velocity, volume and flow depth of the avalanche. Snow depositions from earlier avalanches as well as from drifting snow can significantly alter the effective height of defence structures. Different designs of avalanche breaking mounds and retarding dams were tested in the Cemagref (Grenoble, France) wind tunnel for their effect on drifting snow. Examples included dams and mounds of different sizes and heights. The models were tested in a wind tunnel with sand particles subjected to different wind directions. The resulting depositions were scanned with a laser system to obtain a three dimensional picture of the accumulation pattern. The resulting depositions were scanned with a laser system to obtain a three-dimensional picture of the accumulation pattern. The results show that the accumulated snow varies widely with the design of the structure for a given wind direction. Most snow is accumulated around narrow mounds, with least accumulation observed around mounds covering a smaller relative area of the avalanche path. The data obtained can be used to study the effect of the depositions on the retarding effect of the avalanche defence structures. However, because the similarity criteria for studying the interaction between structures and saltating particles in a wind tunnel cannot be met, the transfer of the results to reality must be performed with caution. |
author2 |
NGI OSLO NOR Partenaires IRSTEA Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) 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 |
Jaedicke, C. Naaim Bouvet, F. Granig, M. |
author_facet |
Jaedicke, C. Naaim Bouvet, F. Granig, M. |
author_sort |
Jaedicke, C. |
title |
Wind-tunnel study of snowdrift around avalanche defence structures |
title_short |
Wind-tunnel study of snowdrift around avalanche defence structures |
title_full |
Wind-tunnel study of snowdrift around avalanche defence structures |
title_fullStr |
Wind-tunnel study of snowdrift around avalanche defence structures |
title_full_unstemmed |
Wind-tunnel study of snowdrift around avalanche defence structures |
title_sort |
wind-tunnel study of snowdrift around avalanche defence structures |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.inrae.fr/hal-02584145 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02584145 Annals of Glaciology, International Glaciological Society, 2004, 38, pp.325-330 |
op_relation |
hal-02584145 https://hal.inrae.fr/hal-02584145 IRSTEA: PUB00016517 |
_version_ |
1765998554981072896 |