空气动力学学报Issue(5)：697-705,9.DOI:10.7638/kqdlxxb-2013.0084
超大型冷却塔内表面风荷载风洞试验与数值模拟研究
Wind tunnel test and numerical simulation study on internal wind loading for super large cooling tower
摘要
Abstract
The internal wind loading of a 220 m high super large cooling tower is studied by means of wind tunnel test and CFD numerical simulation,and the influence of parameters such as ventilation rate on internal pressure is taken into account.The results of present study show that the shortcomings of the rigidity model manometric experiment hardly have effect on test result of inner surface pressure.Meanwhile,it is found that internal wind loading is insensitive to wind speed and unaffected by test velocity.When cross baffle is installed at the bottom of tower,in-ternal pressure appreciably decreases and the homogeneity of distribution along hoop and meridio-nal is better.The max absolute value of internal pressure is found when the ventilation ratio of stuffing layers is 0%,and with the increases of ventilation ratio,the absolute value decreases slightly.However,the internal pressure changes slightly as the ventilation ratio greater than 10%.In general,the distributions of internal pressure along hoop and meridional are basically the same,the average pressure coefficient of-0.50 and fluctuating pressure coefficient of 0.045 are found in wind field of terrain category B,while-0.61 and 0.035 are found in uniform flow field respectively.关键词
冷却塔/内表面风荷载/风洞试验/数值模拟Key words
cooling tower/internal wind loading/wind tunnel test/numerical simulation分类
建筑与水利引用本文复制引用
邹云峰,何旭辉,陈政清,牛华伟..超大型冷却塔内表面风荷载风洞试验与数值模拟研究[J].空气动力学学报,2015,(5):697-705,9.基金项目
国家自然科学基金（51178471，51322808）；中国博士后科学基金（2014M562133）；教育部新世纪优秀人才支持计划（NCET-12-0550）；长江学者和创新团队发展计划 （）
