Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 65-70 |
| Number of pages | 6 |
| Journal | Cold Regions Science and Technology |
| Volume | 149 |
| DOIs | |
| Publication status | Published - Feb 2018 |
| MoE publication type | A1 Journal article-refereed |
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Keywords
- ice accretion
- collision efficiency
- water droplet diameter
- size spectrum
- median volume diameter
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A novel water droplet size parameter for calculation of icing on power lines. / Zhang, Jian; He, Qing; Makkonen, Lasse.
In: Cold Regions Science and Technology, Vol. 149, 02.2018, p. 65-70.Research output: Contribution to journal › Article › Scientific › peer-review
TY - JOUR
T1 - A novel water droplet size parameter for calculation of icing on power lines
AU - Zhang, Jian
AU - He, Qing
AU - Makkonen, Lasse
PY - 2018/2
Y1 - 2018/2
N2 - Collision efficiency is an important parameter for an icing prediction model. It mainly depends on wind velocity, conductor diameter and water droplet diameter. However, water droplets have a spectrum of sizes, which makes the task of calculating the overall collision efficiency time consuming. Therefore, some representative droplet sizes have been used, such as the median volume diameter. In this paper, a novel representative droplet diameter is presented for the calculation of the collision efficiency. The results are compared with those using the median volume diameter and the entire droplet size spectrum. The results show that this parameterization provides a more stable approximation than the median volume diameter when the collision efficiency changes, and is more appropriate when the collision efficiency is small. Mathematical explanation for this is given, and the limitation of this method is discussed.
AB - Collision efficiency is an important parameter for an icing prediction model. It mainly depends on wind velocity, conductor diameter and water droplet diameter. However, water droplets have a spectrum of sizes, which makes the task of calculating the overall collision efficiency time consuming. Therefore, some representative droplet sizes have been used, such as the median volume diameter. In this paper, a novel representative droplet diameter is presented for the calculation of the collision efficiency. The results are compared with those using the median volume diameter and the entire droplet size spectrum. The results show that this parameterization provides a more stable approximation than the median volume diameter when the collision efficiency changes, and is more appropriate when the collision efficiency is small. Mathematical explanation for this is given, and the limitation of this method is discussed.
KW - ice accretion
KW - collision efficiency
KW - water droplet diameter
KW - size spectrum
KW - median volume diameter
UR - http://www.scopus.com/inward/record.url?scp=85042619531&partnerID=8YFLogxK
U2 - 10.1016/j.coldregions.2018.01.021
DO - 10.1016/j.coldregions.2018.01.021
M3 - Article
VL - 149
SP - 65
EP - 70
JO - Cold Regions Science and Technology
JF - Cold Regions Science and Technology
SN - 0165-232X
ER -