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基于fluent6.3数值模拟软件,系统研究了4种湍流度、4种积分尺度、5个风向角、4种长宽比、8种开洞位置等条件下,洞口设置对于平均风压的影响。分析发现:洞口使迎风面和背风面洞口附近的测点风压有所减小,而远离洞口的左右测点风压却有所增加;较小的湍流度和积分尺度流场中的模型受开洞影响更大;宽长比越大的模型受影响测点越多,且影响幅度略有增加;洞口使建筑物整体静风荷载减小的主要原因是洞口的存在使受风面积减小所致。
Based on fluent6.3 numerical simulation software, the effect of hole setting on average wind pressure was systematically studied under four conditions of turbulence, four integral scales, five wind angles, four kinds of aspect ratio, eight kinds of open positions and so on. It is found that the pressure at the measuring points near the windward and leeward openings decreases while the wind pressure at the measuring points far away from the openings increases. The smaller turbulence and integral scaling models in the flow field The influence of opening is more significant; the bigger the ratio of width to length is, the more affected measuring points are, and the influence amplitude is slightly increased. The main reason that the hole reduces the overall static wind load of the building is that the presence of the hole reduces the wind receiving area Due.