针对我国城市化发展与土地和能源节约之间的矛盾，本项目拟对高密度城市微气候和建筑能耗之间相互作用的机制展开研究。在国内外既有文献基础之上，本研究将1）探索高密度城市微气候与建筑能耗相互作用机制理论，提出耦合模拟模型的性能要求。2）建立一种新型城市微气候与建筑群体能耗快速耦合模拟模型；采用风洞实验、城市街谷缩尺模型外场地实验、计算流体力学模拟等手段对快速耦合模拟模型进行验证。3）开发适用于辅助前期设计的建筑群体能耗快速测算工具雏形，支撑低能耗城市规划和建筑设计理论实践。项目拟根据我国高密度城市实际需求，以香港为例，验证提出的城市建筑群体能耗快速测算工具的可行性，为规划决策中的城市密度、城市形态和建筑节能设计提供理论基础和实用工具，进而为我国高密度低能耗城市发展提供技术支持。

In light of growing challenges from urbanization and energy-saving targets in China, this research aims at simulating interactions between urban microclimate and the energy consumption of building clusters in high-density cities. The scope of research consists of the following aspects: 1) to develop an integrated model for urban microclimate and building energy; 2) to evaluate the new model using wind tunnel test, field experiment on mock-up scale model, and cross-checking using Computational Fluid Dynamics (CFD) methods; 3) to develop a prototype of design software that can rapidly assess energy performance for a cluster of buildings at the early stage of design. Using the city of Hong Kong as a case, the research team will evaluate the feasibility of the design software in supporting urban planning and architectural practice. The outcome will enrich literature of environmental model at the scale of a cluster of buildings; it will also contribute to the methodologies of coupled simulation in urban microclimate and building energy. We will provide a prototype of software tool that allows designers to efficiently assess building energy performances in early stages, which is more effective than leaving the assessment to a technical consultant at end stage after all decisions are made.