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采用Fluent RNG k-ε模型,以坡角为变量,研究低矮建筑对罩棚结构上下表面局部测点风压影响规律.结果表明,坡角变化对低矮建筑自身屋面风压影响明显,坡角为18.4°时,屋脊区域呈较大负压;当来流垂直于低矮建筑时,坡角变化对罩棚上表面迎风前沿风压影响不明显,但对靠低矮建筑与罩棚结合处影响明显,该区测点平均风压随屋面坡角增大而增大;由于气流受阻,罩棚下表面主要受到正压作用,在靠近低矮建筑和罩棚结合区域正压较大.
Using Fluent RNG k-ε model and slope angle as a variable, the influence of low-rise building on the wind pressure at local measuring points on the upper and lower surface of the canopy structure was studied. The results show that the change of slope angle has obvious effect on the wind pressure of low- At 18.4 °, the ridge area is under a greater negative pressure. When the incoming flow is perpendicular to the low-rise building, the change of slope angle has no obvious effect on the front windward wind pressure on the upper surface of the canopy, but obviously affects the combination of the low-rise building and the canopy. , The average wind pressure at the measuring point of this area increased with the increase of the slope angle of the roof; the lower surface of the canopy was mainly affected by the positive pressure due to the blockage of the airflow, and the positive pressure was large near the combination area of the low-rise building and the canopy.