FIELD MEASUREMENT AND NUMERICAL STUDY OF EXTERNAL WIND PRESSURE OF RIBBED COOLING TOWER
Keywords:Ribbed cooling tower, Wind pressure coefficient, Field measurement, Code
The hyperbolic thin-shell cooling tower is a typical wind-sensitive structure. The full-size measurement is the most direct and important way to study the distribution of wind pressure on the surface of the cooling tower. Due to the limitations of engineering conditions and meteorological conditions, the field measured data are relatively lacking, and the field test data of ribbed cooling towers are less. In order to analyze the wind pressure distribution on the surface of the cooling tower, we chose a ribbed cooling tower in Toksun County, Xinjiang, China, where there are strong winds all year round, and field measurements were carried out to understand the wind load characteristics of the tower under the perennial dominant wind direction and the maximum wind direction. It was found that the absolute value of the negative pressure on the leeward side was larger than that in the code and the fluctuating wind pressure coefficient fluctuates greatly when the field measured wind speed was greater than 10m/s (15 meters above the ground). For circular section cooling tower, the Reynolds number (Re) has great influence on wind pressure. With the increase of Re, the absolute value of the average negative pressure of the tail wind pressure coefficient increases, which should be paid attention to in design. The regression curves of the average wind pressure coefficients measured on site under several typical working conditions are given by using the least square method, and its form is consistent with the standard (but the coefficients are different). In addition, Fluent software was used to calculate the external wind pressure of the cooling tower, and the field measured results were compared with the Chinese code, German code and numerical calculation, and the results were consistent.
Zhao, Lin, Yaojun Ge, and Ahsan Kareem, 2017. Fluctuating Wind Pressure Distribution Around Full- Scale Cooling Towers. Journal of Wind Engineering and Industrial Aerodynamics 165 : 34–45.
Sun, T.F., Z.F. Gu, L.M. Zhou, P.H. Li, and G.L. Cai, 1992.Full-Scale Measurement and Wind-Tunnel Testing of Wind Loading on Two Neighboring Cooling Towers. Journal of Wind Engineering and Industrial
Aerodynamics 43, no. 1–3: 2213–2224. doi:10.1016/0167-6105(92)90660-3.
KAREEM, A., and C.M. CHENG, 1999.Pressure and Force Fluctuations on Isolated Roughened Circular Cylinders of Finite Height in Boundary Layer Flows. Journal of Fluids and Structures 13, no. 7–8: 907–933.
Cheng, X.X., L. Zhao, Y.J. Ge, J. Dong, and C. Demartino, 2017.A Comprehensive High Reynolds Number Effects Simulation Method for Wind Pressures on Cooling Tower Models. Wind and Structures 24, no. 2:
Orlando, Maurizio, 2001.Wind-Induced Interference Effects on Two Adjacent Cooling Towers. Engineering Structures 23, no. 8: 979–992. doi:10.1016/s0141-0296(00)00110-3.
Noh, Hyuk Chun, 2006.Nonlinear Behavior and Ultimate Load Bearing Capacity of Reinforced Concrete Natural Draught Cooling Tower Shell. Engineering Structures 28, no. 3: 399–410.
Ke, Shitang, and Yaojun Ge, 2015.Extreme Wind Pressures and Non-Gaussian Characteristics for Super-Large Hyperbolic Cooling Towers Considering Aeroelastic Effect. Journal of Engineering Mechanics 141, no. 7: 04015010. doi:10.1061/(asce)em.1943-7889.0000922.
Zahlten, Wolfhard, and Claudio Borri, 1998. Time-domain simulation of the non-linear response of cooling tower shells subjected to stochastic wind loading. Engineering structures 10.20 : 881-889.
Zou, Yun-feng, Xu-hui He, Hai-quan Jing, Shuai Zhou, Hua-wei Niu, and Zheng-qing Chen,2018. Characteristics of Wind-Induced Displacement of Super-Large Cooling Tower Based-on Continuous Medium
Model Wind Tunnel Test. Journal of Wind Engineering and Industrial Aerodynamics 180: 201–212.
Ke, Shitang, Hao Wang, and Yaojun Ge, 2019. Comparison of Stationary and Non-Stationary Wind- Induced Responses of a Super-Large Cooling Tower Based on Field Measurements. Thin-Walled Structures 137:
Wang, H., S.T. Ke, and Y.J. Ge, 2019. Research on Non-Stationary Wind-Induced Effects and the
Working Mechanism of Full Scale Super-Large Cooling Tower Based on Field Measurement. Journal of Wind Engineering and Industrial Aerodynamics 184: 61–76. doi:10.1016/j.jweia.2018.11.015.
Armitt J, 1980.Wind loading on cooling towers. Journal of Structural Division.
Niemann, H.-J., and H. Pröpper, 1975.Some Properties of Fluctuating Wind Pressures on a Full-Scale
Cooling Tower. Journal of Wind Engineering and Industrial Aerodynamics 1: 349–359. doi:10.1016/0167-
Sollenberger N J, Scanlan R H, 1974.Pressure-difference measurements across the shell of a full-scale natural draft cooling tower. Proceedings of the symposium on fullscale measurements of wind effects (Canada: University of Western Ontario).
Sun Tianfeng, 1983. Full-size measurement and wind tunnel research on wind pressure distribution of non-ribbed hyperbolic cooling towers. Acta Aerodynamica Sinica 4.
Wang, Hao, Shitang Ke, Yaojun Ge, and Yukio Tamura, 2018. Extreme and Spectrum Characteristics of Wind Loads on Super-Large Cooling Tower Under Different Four-Tower Combinations. Advances in Structural
Engineering 22, no. 5: 1238–1250. doi:10.1177/1369433218810888.
Cheng, XX, L Zhao, YJ Ge, R Dong, and C Demartino, 2016. Wind Effects on Rough-Walled and
Smooth-Walled Large Cooling Towers. Advances in Structural Engineering 20, no. 6: 843–864.
Cheng, XX, J Dong, Y Peng, L Zhao, and YJ Ge, 2017.Effects of Free-Stream Turbulence on Wind
Loads on a Full-Scale Large Cooling Tower. Advances in Structural Engineering 21, no. 10 : 1437–1453. doi:10.1177/1369433217747404.
Cheng, X.X., S.T. Ke, P.F. Li, Y.J. Ge, and L. Zhao,2019.External Extreme Wind Pressure Distribution for the Structural Design of Cooling Towers. Engineering Structures 181: 336–353. doi:10.1016/j.engstruct.2018.12.038.
Cheng, XX, G Wu, L Zhao, PF Li, and YJ Ge, 2019.Wind-Induced Internal Pressures on Large Cooling Towers. Advances in Structural Engineering 22, no. 15: 3249–3261. doi:10.1177/1369433219861727.
Cheng, X.X., L. Zhao, Y.J. Ge, S.T. Ke, and X.P. Liu, 2015. Wind Pressures on a Large Cooling Tower. Advances in Structural Engineering 18, no. 2: 201–219. doi:10.1260/1369-43184.108.40.206.
Ministry of Construction of PRC.GB/T50102-2014, 2014.Code for Design of Cooling for Industrial Recirculating Water. (Beijing: China Electric Power Press).
Ministry of Construction of PRC.GB50009-2012, 2012. Load Code for the Design of Building Structures.
(Beijing: China Architecture &Building Press).
VGB-R 610Ue, 2005.Structural design of cooling towers.
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