城市建筑风环境模拟及风能利用研究

Research on Wind Environment Simulation and Wind Energy Utilization in Urban Construction Environment

摘要: 随着分布式能源和城市化进程的快速发展，城市建筑环境的风能利用逐步引起人们的注意。本文运用Fluent计算流体方法对华北电力大学主楼建筑群处的风环境进行数值模拟，探讨在其中进行风力发电的可能性。首先进行Gambit几何建模；然后分析城市建筑环境下的风能分布特点，针对风能分布密集以及流动复杂区域，设计加密网格划分方案，尤其对建筑环境中风电机组可能的安装位置即夹道、楼顶、拐角等进行了详细分析；最后，为解决城市建筑风能利用的风力强化与集中问题，综合考虑了不同风能利用方式和不同建筑风环境，提出了适应于城市风能利用的风电机组改型设计要求，并首次将“浓缩概念”引入城市建筑风能利用以改善风力强化与集中问题。研究结果将为城市建筑环境中风能的利用、城市分布式发电提供参考。

Abstract: With the rapid development of distributed energy resource and urbanization, it gradually becomes a great concern on utilizing wind energy resources in city buildings. In this study, a model of the main building of North China Electric Power University was built by Gambit and the numerical calculation was performed in the flow field to discuss the wind power generation potential with the computational fluid dynamics method. Then, characteristics of wind energy distribution were analyzed, and some sections with large wind velocity, such as passageway, rooftops and corners, were chosen to conduct further analysis with denser meshes. Finally, considering different types of wind power use patterns and different constructions, the optimization design of wind turbines was proposed to solve the problem of wind power utilization in cities and the concentrated concept was brought in wind power utilization of constructions for the first time. Study results of this paper can provide references for the wind power utilization in buildings and distributed generation in the urban areas.