Analysis of cooling effect of see breeze on urban areas considering vertical wind profiles

考虑垂直风廓线的微风对城区降温效果分析

• 批准号: 21360283
• 负责人: YOSHIE Ryuichiro
• 金额: $ 10.65万
• 依托单位: Tokyo Polytechnic University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21360283/
• 关键词: CFD; ヒートアイランド; メソスケールモデル; 鉛直プロファイル; 風の道

A method to appropriately classify land-use categories and to give roughness length to the WRF calculation based on GIS data was developed. The vertical profiles of wind velocity calculated by WRF using GIS data agreed very well with those of the observation data. The profiles in summer were classified into some representative patterns by using cluster analysis.Two methods for generating inflow turbulence(both velocity and temperature fluctuations) were examined for Large Eddy Simulation(LES). The applicability of the LES to gas and thermal dispersion in urban street canyons was validated by comparing with wind tunnel experiments.Convective heat transfer coefficients(CHTC) from various urban canopy surfaces to air were investigated by CFD simulations and wind tunnel experiments. The CHTC were generalized with respect to the urban parameters and Reynolds number.

开发了一种对土地利用类别进行适当分类并根据 GIS 数据为 WRF 计算提供粗糙度长度的方法。 WRF利用GIS数据计算出的风速垂直剖面与观测数据非常吻合。通过聚类分析将夏季剖面分为一些有代表性的模式。大涡模拟（LES）研究了两种产生流入湍流（速度和温度波动）的方法。通过与风洞实验的比较，验证了LES对城市街道峡谷气体和热扩散的适用性。通过CFD模拟和风洞实验研究了不同城市冠层表面到空气的对流换热系数（CHTC）。 CHTC 对城市参数和雷诺数进行了概括。

项目成果

Present Situation of Outdoor Wind Environmental Issues in Japan

日本室外风环境问题现状

• 发表时间: 2009
• 期刊: Global Environmental Research
• 作者: Ryuichiro Yoshie;Masaaki Oba
• 通讯作者: Masaaki Oba

EXPERIMENTAL STUDY ON AIR VENTILATION IN A BUILT-UP AREA WITH CLOSELY-PACKED HIGH-RISE BUILDINGS

• DOI: 10.3130/aije.73.661
• 发表时间: 2008
• 期刊: Journal of Environmental Engineering (transactions of Aij)
• 作者: R. Yoshie;Hideyuki Tanaka;T. Shirasawa;Tsuyoshi Kobayashi

建築学会でのCFD研究の状況

日本建筑研究所CFD研究现状

• 发表时间: 2010
• 作者: 宮本文人;仲綾子;鈴木理元;席天宇;義江龍一郎
• 通讯作者: 義江龍一郎

LESによる高密度市街地内の移流・拡散メカニズムと換気・通風性能の解析 3建物高さの非一様性が運動エネルギー収支の鉛直構造に及ぼす影響

利用LES分析高密度城市地区的平流/扩散机制及通风/换气性能 3.建筑高度不均匀性对动能平衡竖向结构的影响

• 发表时间: 2009
• 作者: 白澤多一;遠藤芳信;持田灯;義江龍一郎;田中英之;石田泰之
• 通讯作者: 石田泰之

Effects of building arrangement on ventilation performance in newly-built urban area

新建城区建筑布局对通风性能的影响

• 发表时间: 2011
• 期刊: Proceedings of 13th International Conference on Wind Engineering
• 作者: Tingting Hu;Ryuichiro Yoshie
• 通讯作者: Ryuichiro Yoshie