| 主动来流条件类平板断面气动力荷载效应分析 |
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| 引用本文： | 潘韬,赵林,曹曙阳,葛耀君,S．Ozono.主动来流条件类平板断面气动力荷载效应分析[J].气动实验与测量控制,2010(6):32-37,56. |
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| 作者姓名： | 潘韬 赵林 曹曙阳 葛耀君 S．Ozono |
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| 作者单位： | [1]同济大学土木工程防灾国家重点实验室,上海200092 [2]Department of Physics, Miyazaki University,Miyazaki 889 2155 Japan |
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| 基金项目： | 国家自然科学基金（90715039、50978203）; 科技部重点实验室基础研究项目（SLDRCE08-C-02）联合资助 |
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| 摘 要： | 利用日本宫崎大学11×9多风扇主动控制来流风洞和高精度动态天平测力设备,测量了类平板断面在正弦风波来流条件三分量气动力荷载,比较了不同来流平均风速、波动幅值、脉动频率和积分尺度等参数条件下类平板断面荷载效应。报导并证实了大气边界层物理风洞固定壁面边界反射效应所产生的倍频放大效应;在获得并验证正弦风波加载离散频率荷载效应可线性迭加的有效频段区间内,初步比较了来流积分尺度和风速湍流度效应对于气动荷载效应的影响,阐明典型节段模型风洞试验结果与传统随机抖振气动力理论的差异。
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| 关 键 词： | 多风扇主动风洞 正弦来流 类平板断面 气动力荷载 |
Analysis of aerodynamic load effects on thin plat section under active control flow condition |
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| Institution: | PAN Tao,ZHAO Lin,CAO Shu-yang,GE Yao-jun,S.Ozono(1.State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China;2.Department of Physics,Miyazaki University,Miyazaki 889-2155,Japan) |
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| Abstract: | Utilizing 11×9 multiple fan active control wind tunnel in Miyazaki University and high-precision dynamic balance equipment,three-component aerodynamic forces on thin plat section in sinusoidal fluctuating wind field were measured.The load effects on the model under different conditions,such as mean wind velocity,fluctuation amplitude,frequency and integral length,were compared.Frequency doubling amplification effect caused by the fixed wall boundary reflection effect in atmospheric boundary physical wind tunnel was reported and confirmed.In the validated effective frequency range where discrete frequency load effect caused by sinusoidal fluctuating wind can be linearly superposed,the impacts on aerodynamic load effect induced by turbulence integral length and turbulence intensity were analyzed preliminarily.The differences between the conventional buffeting force theory and the wind tunnel test results of typical section model were clarified. |
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| Keywords: | multiple fan active wind tunnel sinusoidal fluctuating wind thin plate section aerodynamic load |
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