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Arrangement plan of urban cool spots in Sendai using the new urban climatic maps based on urban climate analyses

基于城市气候分析的新城市气候图的仙台城市凉点布置规划

基本信息

批准号：
13450233
负责人：
MOCHIDA Akasi
金额：
$ 9.73万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450233/
关键词：
Heat Island Urban Climatic Map Planted Park River Field Measurement CFD

项目摘要

The effects of natural urban cool spots, i.e. greens, river, etc., on outdoor thermal environment in summer were investigated by field measurements and numerical analyses based on CFD (Computational Fluid Dynamics)1) Field MeasurementField measurements of spatial distribution of air temperature, relative humidity and wind velocity were carried out in Haramachi city of Fukusima Prefecture, in the summers of 2001 and 2002. The results of field measurement are as follows:・ Large effects of sea breeze on outdoor air temperature were observed.・ Although the water temperature of river is higher than air temperature, the air temperature around river was lower than those in residential and urban areas. This is because river played an important role of the passage of the cold air from sea breeze.2) CFD analysesCFD analyses of a mesoscale climate in Tohoku district were carried out. The large effects of sea breeze on outdoor thermal environment in the coastal cites along the Pacific in Tohoku region, such as Sendai and Haramachi, were confirmed and its mechanism was numerically investigated by CFD analyses.3) A prototype of a new type of climate mapA new concept of climate map based on the results of climate analyses was proposed, and the method of rearrangement of numerical data was studied for appropriate management of heat transfer in urban space. A prototype of climate map of Sendai was developed according to the concept proposed in this study.

采用CFD （Computational Fluid Dynamics）方法，通过野外实测和数值分析，研究了城市绿地、河流等天然凉爽点对夏季室外热环境的影响。1)野外实测2001年和2002年夏季在福岛县原町市进行了气温、相对湿度和风速的空间分布实测。现场测量结果如下：·观察到海风对室外气温的较大影响。·虽然河流的水温高于气温，但河流周围的气温低于居民区和城区。这是因为河流对海风带来的冷空气起到了重要的通道作用。CFD分析对东北地区某中尺度气候进行了CFD分析。研究了海风对仙台、原町等东北沿海城市室外热环境的巨大影响，并通过CFD数值分析探讨了海风对室外热环境的影响机制。提出了基于气候分析结果的新气候图概念，并研究了数值数据重排的方法，以实现城市空间热传递的合理管理。根据本文提出的概念，开发了仙台市气候图原型。