Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux
International audience This paper deals with the influence of the vertical and horizontal variation of aeolian snow flux on estimations of snow-storm duration and on snowdrift patterns simulated in wind-tunnel. First of all, we shall review recent developments, including our own simulations, concern...
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ftccsdartic:oai:HAL:hal-02578226v1 2023-05-15T13:29:07+02:00 Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux Modélisation du transport de la neige en soufflerie : variation verticale et horizontale du débit de neige Naaim Bouvet, F. Naaim, M. Érosion torrentielle, neige et avalanches (UR ETGR (ETNA)) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) 1998 https://hal.inrae.fr/hal-02578226 en eng HAL CCSD International Glaciological Society hal-02578226 https://hal.inrae.fr/hal-02578226 IRSTEA: PUB00005752 ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02578226 Annals of Glaciology, International Glaciological Society, 1998, pp.212-216 [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 1998 ftccsdartic 2021-04-17T22:43:21Z International audience This paper deals with the influence of the vertical and horizontal variation of aeolian snow flux on estimations of snow-storm duration and on snowdrift patterns simulated in wind-tunnel. First of all, we shall review recent developments, including our own simulations, concerning the horizontal increase of mass-flux until drifting snow saturation has been reached. Next, after a critical examination of various snowdrift modelling criteria, we present the results of an experiment undertaken in our wind-tunnel: we studied cross-section drift-area changes behind a small-scale snow fence as afunction of time for different fetches but for the same mean wind speed at the beginning of the testing section. For each fetch, we carried out vertical profiles of sand particles using image processing and we studied the geometrical parameters of the drift. We conclude that changes in the cross-section drift area depend on the ablation length and if particle saturation is not reached, the use of storm-duration scale leads to overevaluation of prototype storm duration. Moreover, we point out that drift pattern vary as a function of concentration profiles. Cet article traite de l'influence de la variation verticale et horizontale du transport éolien de la neige sur les estimations de durée de la tempête de neige et les schémas de transport de la neige simulés en soufflerie. Premièrement, nous passerons en revue les récents développements, y compris nos propres simulations concernant l'augmentation horizontale de la masse-transport jusqu'à ce que la saturation de la neige transportée ait été atteinte. Puis, après un examen critique des différentes critères de modélisation du transport de la neige, nous présentons les résultats d'une expérience menée dans notre soufflerie : nous avons étudié les changements de transport de section transversale derrière une petite barrière de neige servant d'échelle temporelle pour différentes distances mais pour la même vitesse du vent au début de la section d'essai. Pour ... 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 |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Naaim Bouvet, F. Naaim, M. Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience This paper deals with the influence of the vertical and horizontal variation of aeolian snow flux on estimations of snow-storm duration and on snowdrift patterns simulated in wind-tunnel. First of all, we shall review recent developments, including our own simulations, concerning the horizontal increase of mass-flux until drifting snow saturation has been reached. Next, after a critical examination of various snowdrift modelling criteria, we present the results of an experiment undertaken in our wind-tunnel: we studied cross-section drift-area changes behind a small-scale snow fence as afunction of time for different fetches but for the same mean wind speed at the beginning of the testing section. For each fetch, we carried out vertical profiles of sand particles using image processing and we studied the geometrical parameters of the drift. We conclude that changes in the cross-section drift area depend on the ablation length and if particle saturation is not reached, the use of storm-duration scale leads to overevaluation of prototype storm duration. Moreover, we point out that drift pattern vary as a function of concentration profiles. Cet article traite de l'influence de la variation verticale et horizontale du transport éolien de la neige sur les estimations de durée de la tempête de neige et les schémas de transport de la neige simulés en soufflerie. Premièrement, nous passerons en revue les récents développements, y compris nos propres simulations concernant l'augmentation horizontale de la masse-transport jusqu'à ce que la saturation de la neige transportée ait été atteinte. Puis, après un examen critique des différentes critères de modélisation du transport de la neige, nous présentons les résultats d'une expérience menée dans notre soufflerie : nous avons étudié les changements de transport de section transversale derrière une petite barrière de neige servant d'échelle temporelle pour différentes distances mais pour la même vitesse du vent au début de la section d'essai. Pour ... |
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 |
Naaim Bouvet, F. Naaim, M. |
author_facet |
Naaim Bouvet, F. Naaim, M. |
author_sort |
Naaim Bouvet, F. |
title |
Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
title_short |
Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
title_full |
Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
title_fullStr |
Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
title_full_unstemmed |
Snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
title_sort |
snowdrift modeling in a wind-tunnel: vertical and horizontal variation of snow flux |
publisher |
HAL CCSD |
publishDate |
1998 |
url |
https://hal.inrae.fr/hal-02578226 |
genre |
Annals of Glaciology |
genre_facet |
Annals of Glaciology |
op_source |
ISSN: 0260-3055 Annals of Glaciology https://hal.inrae.fr/hal-02578226 Annals of Glaciology, International Glaciological Society, 1998, pp.212-216 |
op_relation |
hal-02578226 https://hal.inrae.fr/hal-02578226 IRSTEA: PUB00005752 |
_version_ |
1765998534231851008 |