关键词: 风道；数值模拟；旧城更新；风热环境；建筑布局 ,  ,

Abstract: 　Comfort outdoor thermal environment with good ventilation impacts citizen's living quality significantly, especially at the old residential areas. Case study on a typical old city district in Wuhan, China was conducted in the process of urban renewal. Wuhan city is famous for its adverse climate with extreme weather in both summer and winter. Taking this into account, and inspired by the previous theories on how wind passages alleviate the thermal problem, the plan to create a ventilation corridor in old city area was proposed. By constructing a comprehensive mathematical model on fluid flows and heat transfer characteristics, the factors such as ambient crosswind, natural convection and heat transfer mechanism have been considered . Comparative analysis between the original layout and the revised carried out on modeling temperature and wind speed, and measurements have been concluded to achieve favorable thermal and ventilation comfort in old inner city during the process of urban renewal.

Key words: wind passage, mathematical simulation, urban renewal, thermal environment, architectural layout