Modeling power line icing in freezing precipitation

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Abstract

The existing widely used models of power line icing in freezing precipitation are conceptually evaluated. The reasons for the different predictions by the models are pointed out, and it is shown that none of the models is both correct and complete in predicting design glaze ice loads.
Improvements to the modeling are proposed and a new comprehensive numerical model is presented. This model includes detailed simulation of icicle growth. The results of the new model show that earlier models underestimate ice loads under certain conditions.
Furthermore, the new model shows that ice loads formed close to 0°C may be much higher than those formed at lower temperatures, other conditions being the same.
Original languageEnglish
Pages (from-to)131-142
JournalAtmospheric Research
Volume46
Issue number1-2
DOIs
Publication statusPublished - 1998
MoE publication typeA1 Journal article-refereed

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title = "Modeling power line icing in freezing precipitation",
abstract = "The existing widely used models of power line icing in freezing precipitation are conceptually evaluated. The reasons for the different predictions by the models are pointed out, and it is shown that none of the models is both correct and complete in predicting design glaze ice loads. Improvements to the modeling are proposed and a new comprehensive numerical model is presented. This model includes detailed simulation of icicle growth. The results of the new model show that earlier models underestimate ice loads under certain conditions. Furthermore, the new model shows that ice loads formed close to 0°C may be much higher than those formed at lower temperatures, other conditions being the same.",
author = "Lasse Makkonen",
year = "1998",
doi = "10.1016/S0169-8095(97)00056-2",
language = "English",
volume = "46",
pages = "131--142",
journal = "Atmospheric Research",
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publisher = "Elsevier",
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}

Modeling power line icing in freezing precipitation. / Makkonen, Lasse.

In: Atmospheric Research, Vol. 46, No. 1-2, 1998, p. 131-142.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Modeling power line icing in freezing precipitation

AU - Makkonen, Lasse

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N2 - The existing widely used models of power line icing in freezing precipitation are conceptually evaluated. The reasons for the different predictions by the models are pointed out, and it is shown that none of the models is both correct and complete in predicting design glaze ice loads. Improvements to the modeling are proposed and a new comprehensive numerical model is presented. This model includes detailed simulation of icicle growth. The results of the new model show that earlier models underestimate ice loads under certain conditions. Furthermore, the new model shows that ice loads formed close to 0°C may be much higher than those formed at lower temperatures, other conditions being the same.

AB - The existing widely used models of power line icing in freezing precipitation are conceptually evaluated. The reasons for the different predictions by the models are pointed out, and it is shown that none of the models is both correct and complete in predicting design glaze ice loads. Improvements to the modeling are proposed and a new comprehensive numerical model is presented. This model includes detailed simulation of icicle growth. The results of the new model show that earlier models underestimate ice loads under certain conditions. Furthermore, the new model shows that ice loads formed close to 0°C may be much higher than those formed at lower temperatures, other conditions being the same.

U2 - 10.1016/S0169-8095(97)00056-2

DO - 10.1016/S0169-8095(97)00056-2

M3 - Article

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EP - 142

JO - Atmospheric Research

JF - Atmospheric Research

SN - 0169-8095

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