论文部分内容阅读
针对滨海城市风环境变量的矛盾性、复杂性以及城市空间形态难以量化研究的问题,灵活运用多变量分析技术探索滨海城市空间形态与中尺度风环境系统相互融合的可行技术途径及耦合机制。梳理滨海城市空间形态的变化对风环境的影响机制,研究基于中尺度风环境模式嵌套城市边界层并结合城市下垫面能量平衡模式,以构建城市空间形态对城市风环境的响应策略,模拟分析不同情景下城市热岛、局地风和污染扩散的响应特征,并结合社会经济的发展需求,确定可行的城市空间形态方案。利用卫星遥感与地面监测相结合收集相关参量,由CFD模拟核算,经多变量分析得出结论后,通过大型风洞实验室模型验证。进一步研发可优化滨海城市风环境的空间形态引导系统软件。此研究将有助于通过空间引导对城市风环境的主动调节,为当前我国滨海城市高速发展引发的大气污染防治、台风防灾减灾、城市节能减排等热点研究问题提供参考,并响应政府建设新型智慧城市的号召。
In view of the contradiction and complexity of coastal urban wind environmental variables and the difficulty of quantitative research on urban spatial forms, the paper makes use of multivariate analysis techniques to explore feasible technical approaches and coupling mechanisms for coastal urban spatial forms and mesoscale wind environmental systems. Combing the impact mechanism of coastal urban spatial form changes on wind environment, researching the nested urban boundary layer based on mesoscale wind environment mode and combining the energy balance mode of urban underlying surface to construct the response strategy of urban spatial form to urban wind environment, simulating Analyze the response characteristics of urban heat islands, local winds and pollution spread under different scenarios, and determine feasible urban spatial configuration plans in light of the needs of social and economic development. Using the combination of satellite remote sensing and ground monitoring, the relevant parameters were collected and calculated by CFD simulation. After multivariate analysis, the results were verified by a large-scale wind tunnel laboratory model. Further research and development of space shape guidance system software that can optimize coastal urban wind environment. This research will help to guide the research on the urban wind environment through space and provide reference for the hot research issues such as air pollution control, typhoon disaster prevention and mitigation, urban energy conservation and emission reduction caused by the rapid development of coastal cities in our country and respond to government construction New smart city call.