A Stochastic Model of Atmospheric Rime Icing
Abstract The accumulation of rime ice on structures, due to the impact and freezing of small water droplets, has been modelled as a stochastic process. Individual droplets are introduced into the flow field about the structure at a random position. Their trajectories are then calculated to determine...
Published in: | Journal of Glaciology |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1988
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022143000009023 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000009023 |
id |
crcambridgeupr:10.1017/s0022143000009023 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0022143000009023 2024-03-03T08:46:06+00:00 A Stochastic Model of Atmospheric Rime Icing Gates, E.M. Liu, A. Lozowski, E.P. 1988 http://dx.doi.org/10.1017/s0022143000009023 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000009023 en eng Cambridge University Press (CUP) Journal of Glaciology volume 34, issue 116, page 26-30 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1988 crcambridgeupr https://doi.org/10.1017/s0022143000009023 2024-02-08T08:40:37Z Abstract The accumulation of rime ice on structures, due to the impact and freezing of small water droplets, has been modelled as a stochastic process. Individual droplets are introduced into the flow field about the structure at a random position. Their trajectories are then calculated to determine the position of impact on the structure, or on previously impacted droplets. By assuming that the droplets maintain their shape on impact, the modelled accretion is gradually built up, one droplet at a time. In the present paper, attention has been limited to a circular cylinder as the collecting structure, and it has been assumed that the flow field and the ice accumulation are strictly two-dimensional. With these assumptions, the influence of the droplet/cylinder diameter ratio and of the air speed upon the resulting predictions has been investigated. The main feature of interest in the model prediction is the development, near the edges of the accumulation, of discrete structures called “rime feathers”. The mechanism for the growth of these rime feathers is described, and a comparison is made between the characteristics of the predicted structures and of some natural rime feathers grown in an icing wind tunnel. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Rime ENVELOPE(6.483,6.483,62.567,62.567) Journal of Glaciology 34 116 26 30 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Gates, E.M. Liu, A. Lozowski, E.P. A Stochastic Model of Atmospheric Rime Icing |
topic_facet |
Earth-Surface Processes |
description |
Abstract The accumulation of rime ice on structures, due to the impact and freezing of small water droplets, has been modelled as a stochastic process. Individual droplets are introduced into the flow field about the structure at a random position. Their trajectories are then calculated to determine the position of impact on the structure, or on previously impacted droplets. By assuming that the droplets maintain their shape on impact, the modelled accretion is gradually built up, one droplet at a time. In the present paper, attention has been limited to a circular cylinder as the collecting structure, and it has been assumed that the flow field and the ice accumulation are strictly two-dimensional. With these assumptions, the influence of the droplet/cylinder diameter ratio and of the air speed upon the resulting predictions has been investigated. The main feature of interest in the model prediction is the development, near the edges of the accumulation, of discrete structures called “rime feathers”. The mechanism for the growth of these rime feathers is described, and a comparison is made between the characteristics of the predicted structures and of some natural rime feathers grown in an icing wind tunnel. |
format |
Article in Journal/Newspaper |
author |
Gates, E.M. Liu, A. Lozowski, E.P. |
author_facet |
Gates, E.M. Liu, A. Lozowski, E.P. |
author_sort |
Gates, E.M. |
title |
A Stochastic Model of Atmospheric Rime Icing |
title_short |
A Stochastic Model of Atmospheric Rime Icing |
title_full |
A Stochastic Model of Atmospheric Rime Icing |
title_fullStr |
A Stochastic Model of Atmospheric Rime Icing |
title_full_unstemmed |
A Stochastic Model of Atmospheric Rime Icing |
title_sort |
stochastic model of atmospheric rime icing |
publisher |
Cambridge University Press (CUP) |
publishDate |
1988 |
url |
http://dx.doi.org/10.1017/s0022143000009023 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000009023 |
long_lat |
ENVELOPE(6.483,6.483,62.567,62.567) |
geographic |
Rime |
geographic_facet |
Rime |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 34, issue 116, page 26-30 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000009023 |
container_title |
Journal of Glaciology |
container_volume |
34 |
container_issue |
116 |
container_start_page |
26 |
op_container_end_page |
30 |
_version_ |
1792501984059719680 |