热力发电Issue(5)：21-25,53,6.DOI:10.3969/j.issn.1002-3364.2014.05.021
SCAL型间接空冷塔内外流场数值模拟
Numerical simulation on internal and external flow field of a SCAL indirect air cooling tower
摘要
Abstract
According to the actual size of cooling tube bundle and the arrangement of cooling trian-gle of a surface condenser aluminum exchangers (SCAL)natural draft cooling tower,the geomet-ric model of heat transfer elements at the tower bottom was established.On the basis of the RNG k-εturbulence model and porous medium model,three-dimensional numerical simulation was car-ried out for the inner and external flow field of the air cooling tower,to investigate the influence of environmental conditions on the tower's operation performance.The results show that,with an increase in ambient wind speed,the inlet air speed at windward side of the tower increases gradu-ally,while that at crosswind side and lee side decreases and tends to be obvious;the tower ventila-tion rate and outlet air speed increases at first and then decreases,and their maximum values ap-pear when the wind speed is 2 m/s.关键词
SCAL型间接空冷系统/数值模拟/通风量/出口速度/多孔介质Key words
SCAL indirect air cooling/numerical simulation/ventilation rate/exit velocity/porous medium分类
能源科技引用本文复制引用
田松峰,柴艳琴,向同琼,周广沙..SCAL型间接空冷塔内外流场数值模拟[J].热力发电,2014,(5):21-25,53,6.基金项目
中央高校基本科研业务费专项资金资助项目(12QN39) （12QN39）
河北省自然科学基金项目(E2012502016) （E2012502016）
