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Wind and Structures Volume 24, Number 2, February 2017 , pages 119-144 DOI: https://doi.org/10.12989/was.2017.24.2.119 |
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A comprehensive high Reynolds number effects simulation method for wind pressures on cooling tower models |
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X.X. Cheng, L. Zhao, Y.J. Ge, J. Dong and C. Demartino
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| Abstract | ||
| The traditional method for the simulation of high Reynolds number (Re) effects on wind loads on cooling tower models in wind tunnels focuses only on the mean wind pressure distribution. Based on observed effects of some key factors on static/dynamic flow characteristics around cooling towers, the study reported in this paper describes a comprehensive simulation method using both mean and fluctuating wind pressure distributions at high Re as simulation targets, which is indispensable for obtaining the complete full-scale wind effects in wind tunnels. After being presented in this paper using a case study, the proposed method is examined by comparing the full covariance matrices and the cross-spectral densities of the simulated cases with those of the full-scale case. Besides, the cooling tower\'s dynamic structural responses obtained using the simulated wind pressure fields are compared with those obtained by using the full-scale one. Through these works, the applicability and superiority of the proposed method is validated. | ||
| Key Words | ||
| cooling tower; wind tunnel model test; Reynolds number effect; mean/fluctuating wind pressure distribution; field measurement | ||
| Address | ||
| X.X. Cheng: State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China; College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China L. Zhao and Y.J. Ge: State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China J. Dong and C. Demartino: College of Civil Engineering, Nanjing Tech University, Nanjing 211816, China | ||