半球形干煤棚表面风荷载与干扰效应数值风洞研究

CFD STUDY ON WIND LOADS AND INTERFERENCE EFFECTS OF HEMISPHERICAL LARGE-SPAN DRY-COAL-SHEDS

1.
1. Central Southern China Electric Power Design Institute of China Power Engineering Consulting Group,Wuhan 430071,China;
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2. Construction Administration of WEDZ,Wuhan 430056,China;
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3. State Key Laboratory of Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China

摘要: 利用流体动力学软件对单体与成对出现的半球形干煤棚结构表面的风压分布进行模拟,与刚性模型测压风洞试验结果对比发现,数值风洞模拟结果能够较好地模拟结构表面的风压分布。根据数值风洞获得的表面风压值得到了无干扰与有干扰工况下的分区体型系数以及结构整体的阻力、升力系数,同时,讨论分区体型系数、整体阻力、升力系数随风场条件、风向角以及干扰条件的变化规律。
- 半球形干煤棚 /
- 数值风洞模拟 /
- 分区体型系数 /
- 整体力系数
Abstract: The characteristics of wind pressures distribution on the single and double hemispherical dry-coal-sheds with day-lighting ceiling were investigated by using CFD.Compared with the wind pressures gained by wind tunnel tests in reference,the CFD results were credible.Base on the CFD results,the influences of terrain types,wind directions and interference conditions on the block shape coefficients and drag force and lift force coefficients were discussed.Finally,the block shape coefficients and drag force and lift force coefficients of the total structure were given in the non-interference and interference conditions,which were suitable for engineering application.
- dry-coal-sheds hemispherical dome /
- CFD wind tunnel test /
- block shape coefficient /
- force coefficients of the total structure