Forces on Structures Impacted and Enveloped by Avalanches
Abstract A computer code is reported that models two-dimensional flow of a snow-avalanche cross-section over a down-slope structure of arbitrary cross-sectional shape. Impact forces and pressure are predicted, and the flow pattern past the structure may be arrayed pictorially. The model is applied t...
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Language: | English |
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Cambridge University Press (CUP)
1979
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Online Access: | http://dx.doi.org/10.1017/s0022143000014507 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014507 |
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crcambridgeupr:10.1017/s0022143000014507 2024-03-03T08:46:03+00:00 Forces on Structures Impacted and Enveloped by Avalanches Pedersen, R. R. Dent, J. D. Lang, T. E. 1979 http://dx.doi.org/10.1017/s0022143000014507 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014507 en eng Cambridge University Press (CUP) Journal of Glaciology volume 22, issue 88, page 529-534 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1979 crcambridgeupr https://doi.org/10.1017/s0022143000014507 2024-02-08T08:37:11Z Abstract A computer code is reported that models two-dimensional flow of a snow-avalanche cross-section over a down-slope structure of arbitrary cross-sectional shape. Impact forces and pressure are predicted, and the flow pattern past the structure may be arrayed pictorially. The model is applied to the prediction of forces on rectangular obstacles which are of fractional height to the nominal avalanche flow depth for avalanche flow speeds up to 20 m/s. The program is applied to modeling an experiment by Salm of impact of snow blocks upon a slope-normal wall in order to demonstrate the accuracy of the code in comparison to impact-force histories measured by Salm. Difference between the experimental results and the computer simulation is less than 21%, and supporting discussion is given on factors that may account for the difference. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 22 88 529 534 |
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Open Polar |
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Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Pedersen, R. R. Dent, J. D. Lang, T. E. Forces on Structures Impacted and Enveloped by Avalanches |
topic_facet |
Earth-Surface Processes |
description |
Abstract A computer code is reported that models two-dimensional flow of a snow-avalanche cross-section over a down-slope structure of arbitrary cross-sectional shape. Impact forces and pressure are predicted, and the flow pattern past the structure may be arrayed pictorially. The model is applied to the prediction of forces on rectangular obstacles which are of fractional height to the nominal avalanche flow depth for avalanche flow speeds up to 20 m/s. The program is applied to modeling an experiment by Salm of impact of snow blocks upon a slope-normal wall in order to demonstrate the accuracy of the code in comparison to impact-force histories measured by Salm. Difference between the experimental results and the computer simulation is less than 21%, and supporting discussion is given on factors that may account for the difference. |
format |
Article in Journal/Newspaper |
author |
Pedersen, R. R. Dent, J. D. Lang, T. E. |
author_facet |
Pedersen, R. R. Dent, J. D. Lang, T. E. |
author_sort |
Pedersen, R. R. |
title |
Forces on Structures Impacted and Enveloped by Avalanches |
title_short |
Forces on Structures Impacted and Enveloped by Avalanches |
title_full |
Forces on Structures Impacted and Enveloped by Avalanches |
title_fullStr |
Forces on Structures Impacted and Enveloped by Avalanches |
title_full_unstemmed |
Forces on Structures Impacted and Enveloped by Avalanches |
title_sort |
forces on structures impacted and enveloped by avalanches |
publisher |
Cambridge University Press (CUP) |
publishDate |
1979 |
url |
http://dx.doi.org/10.1017/s0022143000014507 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000014507 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 22, issue 88, page 529-534 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000014507 |
container_title |
Journal of Glaciology |
container_volume |
22 |
container_issue |
88 |
container_start_page |
529 |
op_container_end_page |
534 |
_version_ |
1792501895335510016 |