摘要
为研究双冷却塔的干扰效应，采用计算流体动力学（CFD）方法分析了在不同塔间距和风向角情况下冷却塔的风荷载分布规律．计算单座冷却塔的风荷载并与规范数据进行比较，结果验证了CFD方法用于模拟冷却塔风荷载的可靠性．算例分析表明，在固定双塔间距条件下，后塔阻力系数随风向角增大呈递增趋势，并当双塔平行排列时达到最大；当双塔前后排列时，后塔阻力系数随塔间距增大而逐渐增大，并趋向单塔结果；当双塔平行排列时，应尽量避免塔间距为1．1～1．4倍冷却塔底面直径，此时干扰效应极其显著．
Computational fluid dynamics （CFD） method was employed to clarify the interference effect of double cooling towers with different tower distance and wind azimuth. The wind load on single tower was obtained by CFD simulation, and the caparison of the simulation results with the Codes verified the rationality of CFD method. The simulation of double-tower implies that the drag coefficient of rear tower increases with increasing wind azimuth and reaches maximum value at side-to-side arrangement under fixed towers＇ distance. When two towers are arranged in tandem, the drag coefficient of rear tower increases with increasing towers＇ distance, and inclines to the results of single tower. The towers＇ distance of 1.1 -1.4 times of tower base diameter at side-to-side arrangement should be avoided due to the worst interference effect.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2007年第6期1017-1022,共6页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目(50608063)
关键词
冷却塔
风荷载
数值模拟
干扰效应
阻力系数
cooling tower
wind load
numerical simulation
interference effect
drag coefficient
