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Ventilation characteristics of the built environment and their effects on the urban microclimate

机译：建筑环境的通风特性及其对城市小环脉的影响

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The thermal conditions within cities, as well as the energy efficiency of buildings, are determined by the urban climate, which is in turn influenced by the thermal-fluid characteristics of the built environment and particularly transfer effects to the atmosphere. A good example of this interaction is the urban heat island phenomenon. In this case heat generated from urban activities has a direct impact on the urban microclimate, resulting in increased night time temperatures and a reduction in the observed temperature range. In order to understand the interaction between the built environment and the urban microclimate, one needs to consider: 1. The energy efficiency of the built environment and mainly the phenomena of heat transfer through radiation. 2. The ventilation capability of the urban environment and the effects of different building geometries. The study presented in this paper is concerned with the ventilation of the built environment and involves Particle Image Velocimetry (PIV) measurements under street canyon flow conditions in a flow channel.
机译：城市内的热条件以及建筑物的能量效率，由城市气候决定，该城市气候又受到内置环境热流体特性的影响，特别是对大气的转移效果。这种互动的一个很好的例子是城市热岛现象。在这种情况下，从城市活动产生的热量对城市小气候产生直接影响，导致夜间温度增加和观察到的温度范围的减少。为了了解建筑环境与城市微气密之间的互动，需要考虑：1。建筑环境的能效，主要通过辐射传热现象。 2.城市环境的通风能力和不同建筑几何形状的影响。本文提出的研究涉及建筑环境的通风，并涉及在流动通道中的街道峡谷流动条件下的粒子图像速度（PIV）测量。

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