【作者】 梁彬； 朱凤荣； 李长龄； 孟宪忠； 钮珍南； 张伯寅； 魏庆鼎；

【Author】 LIANG Bin ZHU Fengrong LIChangling MENG Xianzhong NIU Zhennan ZHANG Boyin WEI Qingding(State Key Laboratory for Turbulence Research and complex systems, Peking University, Beijing 100871,China)

【机构】 北京大学湍流与复杂系统研究国家重点实验室；

【摘要】 通过对武汉体育中心体育场内场风环境的测量,介绍了模拟实验中所需满足的相似条件及体育场所处地理位置的大气边界层模拟。缩小尺度的体育场模型置于风洞的大气边界层气流中,采用一种新型水平速度传感器,测量当地水平风速,同时用烟线示踪粒子显示的方法同步辨别了传感器所处位置的风向,通过图象处理,获得体育场在不同的风向条件下内场各测点的水平速度矢量,并给出了变化的速度场水平方向瞬时流线。对该体育场在风作用下内场风场的品质作出预报。更多还原

【Abstract】 The wind field inside an athletic museum is always very much concerned both by architects and sporting world since the wind field influences the sports results and the effectiveness of records. Described in the present paper are measurements of the near ground wind field inside an athletic museum model obtained in atmospheric boundary layer wind tunnel experiments. Various aerodynamic means such as hotwire anmenometer-, smoke trace visualization technique and emni-directional sensor, were used to investigate the wind field variations inside the athletic museum under different wind conditions (direction and velocities) outside the museum. Predictions were made of the wind influence for the athletic museum when it is actually utilized. Such experimental study may greatly reduce the potential risk of the intolerable wind effects on the sporting activities and meantime some remedies can also be recommended through such aerodynamic studies.更多还原