Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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An Analysis of the Impact of Building Wind by Field Observation in Haeundae LCT Area, South Korea: Typhoon Omais in 2021

  • Byeonggug, Kang (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Jongyeong, Kim (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Yongju, Kwon (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Joowon, Choi (Department of Civil & Environmental Engineering, Pusan National University) ;
  • Youngsu, Jang (Green Land & Water Management Research Institute) ;
  • Soonchul, Kwon (Department of Civil & Environmental Engineering, Pusan National University)
  • Received : 2022.08.10
  • Accepted : 2022.09.26
  • Published : 2022.12.31
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Abstract

In the Haeundae area of Busan, South Korea, damage has continued to occur recently from building wind from caused by dense skyscrapers. Five wind observation stations were installed near LCT residential towers in Haeundae to analyze the effect of building winds during typhoon Omais. The impact of building wind was analyzed through relative and absolute evaluations. At an intersection located southeast of LCT (L-2), the strongest wind speed was measured during the monitoring. The maximum average wind speed for one minute was observed to be 38.93 m/s, which is about three times stronger than at an ocean observation buoy (12.7 m/s) at the same time. It is expected that 3 to 4 times stronger wind can be induced under certain conditions compared to the surrounding areas due to the building wind effect. In a Beaufort wind scale analysis, the wind speed at an ocean observatory was mostly distributed at Beaufort number 4, and the maximum was 8. At L-2, more than 50% of the wind speed exceeded Beaufort number 4, and numbers up to 12 were observed. However, since actual measurement has a limitation in analyzing the entire range, cross-validation with computational fluid dynamics simulation data is required to understand the characteristics of building winds.

Keywords

Acknowledgement

This research was supported by a grant (20011068) from the Regional Customized Disaster-Safety R&D Program, which is funded by the Ministry of Interior and Safety (MOIS, Korea).

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