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工程力学  2013 

基于CFD技术的螺旋桨风机气流速度场数值模拟研究

DOI: 1000-4750(2013)06-0346-07, PP. 346-352

Keywords: 帐篷结构,吹风试验,CFD模拟,螺旋桨风机,气流速度场

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Abstract:

为了检测帐篷结构的抗风能力,需建立相应的吹风试验系统。采用标准湍流模型对拟建立吹风试验系统中螺旋桨风机的气流速度场进行了三维实尺度数值模拟。分析了单风机和不同轴心间距时双风机的气流速度分布规律。结果表明单风机气流速度峰值位于风机轴心线上,风速沿流向逐渐减小。双风机气流速度关于通过风机轴心连线中点的垂面呈对称分布,气流速度叠加范围沿流向逐渐增大,距风机出口越远,风速分布越均匀。在通过风机轴心的垂面之间,风速沿流向逐渐增大,至距风机出口13~15m远处开始下降。双风机形成的气流速度在距风机12.2m远处的4m×7m矩形区域上分布均匀,风速值均大于20m/s。风机轴心间距为4m时,4m×7m矩形区域角点处均风速值较大。

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