A quasi-steady model to account for the effects of upstream turbulence characteristics on pressure fluctuations on a low-rise building
學年 107
學期 1
出版（發表）日期 2018-08-01
作品名稱 A quasi-steady model to account for the effects of upstream turbulence characteristics on pressure fluctuations on a low-rise building
作品名稱（其他語言）
著者 Chieh-Hsun Wu; Gregory A. Kopp
單位
出版者
著錄名稱、卷期、頁數 Journal of Wind Engineering and Industrial Aerodynamics 179, P.338-357
摘要 The effects of upstream turbulence on roof pressure fluctuations of a low-rise building are investigated via the quasi-steady (QS) vector model. Atmospheric boundary layer (ABL) turbulence, with intensities ranging from 13% to 27% and integral length scales from 6 to 13 times the building height, is simulated in a boundary layer wind tunnel. The model building surface pressures are measured synchronously with the velocity at a point one building height above the leading edge. The QS model is found to accurately explain the effects of the ABL turbulence with scales larger than about 5 building heights. Furthermore, a QS model established in one terrain can explain the pressure fluctuations in the other terrains based on the fact that the model functions are similar over the range of observed upstream terrain conditions. This finding is important to the Partial Turbulence Simulation approach since there may be a range of turbulence intensity – integral scale combinations which can yield the same aerodynamic behavior, allowing more flexibility for choosing the model length scales. However, further work is required for modelling the effects of small-scale turbulence on the peak pressures and in defining appropriate bounds when the precise turbulence simulation can be relaxed.
關鍵字 Wind-induced pressure fluctuations;Atmospheric turbulence;Quasi-steady theory;Building aerodynamics;Low-rise buildings
語言 en
ISSN 0167-6105
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 否
國別 CAN
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/120044 )