This paper introduces a physically-based model to simulate interactions between a building and its outdoor conditions at the urban microscale. In the model, the building is simulated with EnergyPlus while its outdoor conditions are assessed from OpenFOAM. Furthermore, the model simulates the street pavement and surrounding buildings based on the lumped thermal theory. All components of the model are quasi-dynamically co-simulated. Through simulations of the model, waste heat releases from a cooling system can be observed with a higher resolution than this achieved by most urban microclimate models in the literature. Unlike several methods in the literature, the model evaluates a countermeasure to urban heat islands by considering direct and indirect effects simultaneously. To validate the model, measurements were collected during a field experiment in an university campus. Comparing measurements to estimates, the model seems to properly approximate the outdoor temperature and the air motion. However, a discrepancy is observed between estimates and measurements of the surface temperature. The discrepancy could be minimised if a better consideration of the net-longwave radiation was possible when co-simulating EnergyPlus. After some improvements, the model could become a support tool to mitigate urban heat islands and climate change in different regions of the world.

本文介绍了一种基于物理的模型，以模拟建筑物及其在城市微观尺度上的室外条件之间的相互作用。在模型中，使用EnergyPlus对建筑物进行仿真，同时通过OpenFOAM评估其室外条件。此外，该模型基于集总热学原理模拟了街道的路面和周围的建筑物。该模型的所有组件都是准动态协同仿真的。通过模型的仿真，可以观察到从冷却系统释放的废热，其分辨率高于文献中大多数城市微气候模型所实现的分辨率。与文献中的几种方法不同，该模型通过同时考虑直接和间接影响来评估城市热岛的对策。为了验证模型，测量是在大学校园中进行的野外实验中收集的。将测量值与估计值进行比较，该模型似乎可以正确地估算室外温度和空气运动。然而，在表面温度的估计和测量之间观察到差异。如果在共同仿真EnergyPlus时可以更好地考虑净长波辐射，则可以将差异最小化。经过一些改进后，该模型可以成为缓解世界不同地区的城市热岛和气候变化的支持工具。如果在共同仿真EnergyPlus时可以更好地考虑净长波辐射，则可以将差异最小化。经过一些改进后，该模型可以成为缓解世界不同地区的城市热岛和气候变化的支持工具。如果在共同仿真EnergyPlus时可以更好地考虑净长波辐射，则可以将差异最小化。经过一些改进后，该模型可以成为缓解世界不同地区的城市热岛和气候变化的支持工具。