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Effects of wind fences on the wind environment around Jang Bogo Antarctic Research Station

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Abstract

This study investigated the flow characteristics altered by Jang Bogo Antarctic Research Station using computational fluid dynamics (CFD) modeling. The topography and buildings around Jang Bogo Station were constructed with computer-aided-design data in the CFD model domain. We simulated 16 cases with different inflow directions, and compared the flow characteristics with and without Jang Bogo Station for each inflow direction. The wind data recorded by the site’s automatic weather station (AWS) were used for comparison. Wind rose analysis showed that the wind speed and direction after the construction of Jang Bogo Station were quite different from those before construction. We also investigated how virtual wind fences would modify the flow patterns, changing the distance of the fence from the station as well as the porosity of the fence. For westerly inflows, when the AWS was downwind of Jang Bogo Station, the decrease in wind speed was maximized (−81% for west-northwesterly). The wind speed reduction was also greater as the distance of the fence was closer to Jang Bogo Station. With the same distance, the fence with medium porosity (25%–33%) maximized the wind speed reduction. These results suggest that the location and material of the wind fence should be selected carefully, or AWS data should be interpreted cautiously, for particular prevailing wind directions.

摘要

本研究运用计算流体力学(CFD)模式探讨韩国南极张保皋科考站的建造对周边气流特征的改变.在CFD模式中,我们运用计算机辅助制图(CAD)技术构建张保皋科考站周边的地形和建筑物特征.通过设定16种不同输入气流(盛行风)方向模拟方案,对每一方向的盛行风,对比研究张保皋科考站建造前后的风场特征.张保皋科考站的自动气象站风场数据用于模拟结果的对比分析.风玫瑰图分析揭示了张保皋科考站建造前后的风向和风速均有显著差异.通过改变虚拟的防风栅栏与张保皋科考站之间的距离以及防风栅栏的孔隙度,进一步研究防风栅栏对气流特征的影响.在盛行西风条件下,自动气象站处于张保皋科考站下风区,科考站的建造使得下风区风速达到最大程度的减小(西到西北风降低约81%).防风栅栏与张保皋科考站距离越近,风速的减小越明显.当防风栅栏与张保皋科考站距离固定,中等孔隙度(25%-33%)的防风栅栏对风速减小的作用最显著.该研究表明科考站周边防风栅栏的位置和材料结构需要慎重选择,自动气象站风场数据的分析需谨慎,尤其需要结合盛行风的方向.

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Acknowledgements

The authors would like to thank the anonymous reviewers for their valuable comments and suggestions. This study was funded by a Korea Polar Research Institute project (PE16250). Hateak KWON is financially supported by PE17010 of Korea Polar Research Institute.

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Authors and Affiliations

  1. Department of Environmental Atmospheric Sciences, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea

    Jang-Woon Wang, Jae-Jin Kim, Wonsik Choi, Da-Som Mun & Jung-Eun Kang

  2. Korea Polar Research Institute, 26, Songdomirae-ro, Yeonsu-gu, Incheon, 21990, Republic of Korea

    Hataek Kwon

  3. Department of Spatial Information Engineering, Pukyong National University, 45, Yongso-ro, Nam-gu, Busan, 48513, Republic of Korea

    Jin-Soo Kim & Kyung-Soo Han

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  1. Jang-Woon Wang
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Correspondence to Jae-Jin Kim.

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Wang, JW., Kim, JJ., Choi, W. et al. Effects of wind fences on the wind environment around Jang Bogo Antarctic Research Station. Adv. Atmos. Sci. 34, 1404–1414 (2017). https://doi.org/10.1007/s00376-017-6333-x

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