Article ID Journal Published Year Pages File Type
6757233 Journal of Wind Engineering and Industrial Aerodynamics 2018 18 Pages PDF
Abstract
With aid of structural health monitoring systems, the field measurements have been proceeded in a ready manner in recent years. This treatment, however, raises a question on the influence of complex terrain associated with engineering structures upon coherence analysis. An independent field measurement is thus still necessary for the analysis of spatial coherence. In the present paper, the field measurement of near-surface strong winds in Southeast China is carried out. For implementing the purpose, an observation array was built up in a typhoon-prone area. The wind characteristics of local site, the spatial coherence of wind field and statistics of decay parameters in exponential formats are investigated. It is revealed that decay parameters of the Davenport and Krenk models have a different relationship to vertical and lateral separations, which are positively and weakly correlated to vertical separation, respectively; while both negatively correlated to lateral separation. The statistics of decay parameters relies significantly upon the time period of velocity readings. Besides, there is a logical relationship between decay parameters and wind velocity, maintaining a consistency with the pioneering measured data in 1960s-1970s.
Related Topics
Physical Sciences and Engineering Energy Renewable Energy, Sustainability and the Environment
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