Investigation of Street Canyon Phenomena in Large-Scale Turbulence

大规模湍流中街道峡谷现象的研究

• 批准号: 22560165
• 负责人: SEKISHITA Nobumasa
• 金额: $ 2.33万
• 依托单位: Toyohashi University of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22560165/
• 关键词: 乱流; せん断流; 渦; 熱・運動量輸送; 風環境; ビル風; 大気拡散; 風洞実験

Wind tunnel experiments of wind structure around buildings located along a heated street and cooling phenomena of the street were conducted by using atmospheric wind tunnels. The experimental parameters were a street width, the height and the arrangement of the buildings, the turbulent intensity of a cross flow. The smoke wire method for flow visualizations and a thermal camera for the thermal measurements of the street surface were employed.(1) Main flows which affect on the cooling of the street were (a) separated flows from the roof of upstream -side buildings, (b) flows between buildings located side by side, (c) circulation flows behind upstream-side buildings or in front of downstream-side buildings, (d) wake behind upstream-side buildings by turbulent motions.(2)By turbulent motions, the temperature distributions of the street were more uniform in the large-scale turbulence than in the grid turbulence.(3)In the case of downstream-side buildings which are taller than upstream-side buildings, the streetsurface around front of the downstream-side buildings was remarkably cooled by stable circular flows in front of down-side buildings.(4) Street temperature was more uniform on the narrow street than on the wide street.(5) The database was built up for urban planning.

利用大气风洞对沿街建筑物周围的风结构和街道的降温现象进行了风洞实验。实验参数包括街道宽度、建筑物的高度和布置、横流的湍流强度。(1)影响街道冷却的主要气流是(A)从上游侧建筑物的屋顶分离出来的流动，(B)在并排的建筑物之间的流动，(C)上游侧建筑物后面或下游建筑物前面的环流，(D)上游建筑物后面的湍流。(2)通过湍流运动，在大尺度湍流中，街道的温度分布比网格湍流中的温度分布更均匀。(3)对于高度高于上游建筑物的下游建筑物，下游建筑物前面的稳定环流对下游建筑物前面的街道表面有显著的降温作用。(4)狭窄街道上的街道温度比宽窄街道上的街道温度更均匀。(5)为城市规划建立了数据库。

项目成果

ストリートキャニオンに関する風洞実験（加熱路面の温度計測およびキャニオン内に拡散する排気ガスの可視化）

街道峡谷风洞实验（加热路面温度测量及峡谷内废气扩散可视化）

• 发表时间: 2013
• 作者: S. Y. Bircan;H. Kamoshita;R. Kanamori;Y Ishida;K. Matsumoto;Y. Hasegawa;K. Kitagawa;関下信正
• 通讯作者: 関下信正

Research on the Characteristics of Heated Steed Canyons in Turbulent Wind Tunnels

湍流风洞热骏峡谷特性研究

• 发表时间: 2011
• 期刊: Proceedings of 13th International Conference on Wind Engineering
• 作者: H.Kikukawa;N.Sekishita;他
• 通讯作者: 他

ストリートキャニオンに関する風洞実験(加熱路面の温度計測およびキャニオン内に拡散する排気ガスの可視化)

街道峡谷风洞实验（加热路面温度测量及峡谷内废气扩散可视化）

• 发表时间: 2012
• 作者: Y.Hasegawa;Y. Takagi;J. Murata;K.Kikuyama;豊橋技術科学大学
• 通讯作者: 豊橋技術科学大学

ストリートキャニオンの路面冷却に関する風洞実験(大規模乱流と格子乱流中の比較)

街道峡谷路面冷却风洞实验（大尺度湍流与网格湍流对比）

• 发表时间: 2011
• 作者: S.Y.Bircan;H.Kamoshita;R.Kanamori;Y.Ishida;K.Matsumoto;Y.Hasegawa;K.Kitagawa;関下信正・早川秀一
• 通讯作者: 関下信正・早川秀一

Characteristics of flow and temperature field along a heated street canyon in the multiple-fan turbulence wind tunnel

多扇湍流风洞中加热街道峡谷流场和温度场特征

• 发表时间: 2012
• 作者: Hironori Kikugawa;Takanobu Goto;Yuki Yonezawa;Nobumasa Sekishita and Kazuhiko Toshimitsu
• 通讯作者: Nobumasa Sekishita and Kazuhiko Toshimitsu