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城市室外风热环境,尤其是旧城住区中的风热环境对于提高居民生活品质意义重大。以武汉大智门地区老城区为例,针对武汉夏热冬冷的地域气候特征,结合城市风道改善风热环境的理论,提出在旧城改造中构建通风廊道空间设想。通过综合数学模型描述气流和热传导特征,考虑外界横向侧风(盛行风)、自然对流和热辐射传导机制的影响,得出研究区域内现状情况下以及改善方案中的温度和风速分布。经过分析对比不同改造方案,提出在旧城区内营造连续、贯通风道的优化措施。
Urban outdoor wind and hot environment, especially in the old city residential areas in the hot and humid environment for improving the quality of life of residents of great significance. Taking Dazhimen district of Wuhan as an example, according to the regional climate characteristics of Wuhan hot summer and cold in winter, combined with the theory of urban air duct to improve the wind and thermal environment, this paper proposes the idea of building ventilation corridor space in the reconstruction of old city. Describing the characteristics of airflow and heat transfer through comprehensive mathematical models, taking into account the influence of lateral lateral wind (prevailing wind), natural convection and thermal radiation conduction mechanism, the distribution of temperature and wind speed under current situation and improvement scheme in the study area is obtained. After analysis and comparison of different transformation programs, proposed in the old city to create a continuous, through the air duct optimization measures.