A method to estimate peak pressures on low-rise building models based on quasi-steady theory and partial turbulence analysis

doi:10.1016/j.jweia.2021.104785

淡江大學機構典藏 > 工學院 > 土木工程學系暨研究所 > 期刊論文 > Item 987654321/121956

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题名:	A method to estimate peak pressures on low-rise building models based on quasi-steady theory and partial turbulence analysis
作者:	Guo, Yitian;Wu, Chieh-Hsun;Kopp, Gregory A.
关键词:	Building aerodynamics;Wind loads;Peak pressure coefficients;Partial turbulence simulation;Quasi-steady theory;Low-rise buildings
日期:	2021-11
上传时间:	2022-01-15 12:10:57 (UTC+8)
出版者:	Elsevier
摘要:	A new method for estimating peak area-averaged pressure coefficients on the roof of a low-rise building model is developed. The method relies on the well-known quasi-steady vector model to account for the large-scale, low-frequency fluctuations of the upstream wind. The novel approach is to account for small-scale and body-generated turbulence effects using a stochastic model. Wind tunnel data for a 1/50-scale low-rise building model for six different upstream turbulence conditions are used for the analysis. The fluctuating pressure component induced by the small-scale and body-generated turbulence is obtained by subtracting the quasi-static pressure component from the original pressure signal. It is observed that the small-scale pressure component is highly dependent on turbulence level of the upstream flow, such that normalization by the small-scale components of the upstream turbulence kinetic energy leads to a self-similar distribution. A Monte Carlo simulation was used to combine the small-scale and quasi-steady pressure components. The new model provides good predictions of peak area-averaged pressure coefficients that cannot be captured by the quasi-steady approach.
關聯:	Journal of Wind Engineering and Industrial Aerodynamics 218, 104785
DOI:	10.1016/j.jweia.2021.104785
显示于类别:	[土木工程學系暨研究所] 期刊論文

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