Journal of Industrial Technology (산업기술연구)
- Volume 24 Issue B
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- Pages.29-36
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- 2004
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- 1229-9588(pISSN)
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- 1598-1371(eISSN)
Proper Orthogonal Decomposition Analysis of Dynamic Wind Pressures Acting on a Tall Tower Model
고층 타워에 작용하는 동적 풍압력의 POD 방법을 이용한 시공간적 특성 해석
Abstract
The wind and wind-induced dynamic wind pressures fluctuate irregularly according to time and space. In this study, the proper orthogonal decomposition(POD) technique is applied to wind pressures acting on a tall tower model, and the following results are found: the along-wind and across-wind forces can be reconstructed by only four dominant POD modes, and the reconstructed errors are 4.71% and 22%, respectively for across-wind and along-wind directions. The physical meanings for dominant modes are also presented in the paper. The POD analysis can compress complex wind pressure data only by a few dominant modes and interpret spatio-temporal characteristics of wind pressure by novel way while existing statistical methods do not have such benefits.
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