Mixed ice accretion on aircraft wings
Ice accretion is a problematic natural phenomenon that an effects a wide range of engineering applications including power cables, radio masts and wind turbines. Accretion on aircraft wings occurs when supercooled water droplets freeze instantaneously on impact to form rime ice or runback as water a...
| Main Authors: | , , , |
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| Format: | Article |
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American Institute of Physics
2018
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| Online Access: | https://eprints.nottingham.ac.uk/48955/ |
| _version_ | 1848797888135561216 |
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| author | Janjua, Zaid A. Turnbull, Barbara Hibberd, Stephen Choi, Kwing-So |
| author_facet | Janjua, Zaid A. Turnbull, Barbara Hibberd, Stephen Choi, Kwing-So |
| author_sort | Janjua, Zaid A. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | Ice accretion is a problematic natural phenomenon that an effects a wide range of engineering applications including power cables, radio masts and wind turbines. Accretion on aircraft wings occurs when supercooled water droplets freeze instantaneously on impact to form rime ice or runback as water along the wing to form glaze ice. Most models to date have ignored the accretion of mixed ice, which is a combination of rime and glaze. A parameter we term the `freezing fraction', is defined as the fraction of a supercooled droplet that freezes on impact with the top surface of the accretion ice to explore the concept of mixed ice accretion. Additionally we consider different `packing densities' of rime ice, mimicking the different bulk rime densities observed in nature. Ice accretion is considered in four stages: rime, primary mixed, secondary mixed and glaze ice. Predictions match with existing models and experimental data in the limiting rime and glaze cases. The mixed ice formulation consequently however provides additional insight into the composition of the overall ice structure, which ultimately influences adhesion and ice thickness; and shows that for similar atmospheric parameter ranges, this simple mixed ice description leads to very different accretion rates. A simple one-dimensional energy balance was solved to show how this freezing fraction parameter increases with decrease in atmospheric temperature, with lower freezing fraction promoting glaze ice accretion. |
| first_indexed | 2025-11-14T20:11:02Z |
| format | Article |
| id | nottingham-48955 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| last_indexed | 2025-11-14T20:11:02Z |
| publishDate | 2018 |
| publisher | American Institute of Physics |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-489552020-05-04T19:33:10Z https://eprints.nottingham.ac.uk/48955/ Mixed ice accretion on aircraft wings Janjua, Zaid A. Turnbull, Barbara Hibberd, Stephen Choi, Kwing-So Ice accretion is a problematic natural phenomenon that an effects a wide range of engineering applications including power cables, radio masts and wind turbines. Accretion on aircraft wings occurs when supercooled water droplets freeze instantaneously on impact to form rime ice or runback as water along the wing to form glaze ice. Most models to date have ignored the accretion of mixed ice, which is a combination of rime and glaze. A parameter we term the `freezing fraction', is defined as the fraction of a supercooled droplet that freezes on impact with the top surface of the accretion ice to explore the concept of mixed ice accretion. Additionally we consider different `packing densities' of rime ice, mimicking the different bulk rime densities observed in nature. Ice accretion is considered in four stages: rime, primary mixed, secondary mixed and glaze ice. Predictions match with existing models and experimental data in the limiting rime and glaze cases. The mixed ice formulation consequently however provides additional insight into the composition of the overall ice structure, which ultimately influences adhesion and ice thickness; and shows that for similar atmospheric parameter ranges, this simple mixed ice description leads to very different accretion rates. A simple one-dimensional energy balance was solved to show how this freezing fraction parameter increases with decrease in atmospheric temperature, with lower freezing fraction promoting glaze ice accretion. American Institute of Physics 2018-02-19 Article PeerReviewed Janjua, Zaid A., Turnbull, Barbara, Hibberd, Stephen and Choi, Kwing-So (2018) Mixed ice accretion on aircraft wings. Physics of Fluids, 30 (2). 027101. ISSN 1070-6631 mixed ice aircraft wings freezing fraction glaze rime http://aip.scitation.org/doi/abs/10.1063/1.5007301 doi:10.1063/1.5007301 doi:10.1063/1.5007301 |
| spellingShingle | mixed ice aircraft wings freezing fraction glaze rime Janjua, Zaid A. Turnbull, Barbara Hibberd, Stephen Choi, Kwing-So Mixed ice accretion on aircraft wings |
| title | Mixed ice accretion on aircraft wings |
| title_full | Mixed ice accretion on aircraft wings |
| title_fullStr | Mixed ice accretion on aircraft wings |
| title_full_unstemmed | Mixed ice accretion on aircraft wings |
| title_short | Mixed ice accretion on aircraft wings |
| title_sort | mixed ice accretion on aircraft wings |
| topic | mixed ice aircraft wings freezing fraction glaze rime |
| url | https://eprints.nottingham.ac.uk/48955/ https://eprints.nottingham.ac.uk/48955/ https://eprints.nottingham.ac.uk/48955/ |