深圳市建筑室内外脉动风特性实测研究

利用现场实测的方法对深圳市某办公建筑室内外的自然风脉动特性进行研究,经实测数据的统计分析,得到建筑室内外的平均风速、湍流强度、湍流积分尺度及湍流的谱特性等脉动风特性.分析结果表明：处在建筑群冠层的平均风速、湍流积分尺度、湍流能量要高于城市密集层的值;建筑室内出风口的湍流强度比进风口处的略大,说明出风口处的脉动特征较为明显;建筑室内的进、出风口振幅能量不同,而频率波动的近似一致性,说明风的振动频率随着空间尺度稳定传递.

Analysis of Turbulent Wind Characteristics at the Indoor and Outdoor of Buildings in Shenzhen

Observation is performed of natural wind at indoor and outdoor of an office in Shenzhen. The turbulent characteristics, including average wind speed,turbulence intensity, turbulence integral scale and wind spectrum, are summarized based on the measured data. The analysis showed that： in the canopy of the buildings, he average wind speed, turbulence integral scale and turbulence energy is higher than the value of the urban dense area; turbulence intensity of the indoor air outlet is slightly larger than the inlet, the outlet has more obvious pulse characteristics; both of the inlet and outlet of the indoor have the different amplitude energy, while frequency fluctuations almost keep the approximate consistency, which means that the vibration frequency transfer with the turbulence integral scale steadily.