Study on formation of flow pattern around a high-rise building model due to changes of wind directions under natural wind

自然风作用下高层建筑模型周围风向变化形成流态研究

• 批准号: 06452287
• 负责人: KATSURA Junji
• 金额: $ 4.61万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06452287/
• 关键词: natural wind; prism model; wind pressure measurement; stream path; pattern formation length; wind tunnel experiment; numerical simulation; investigation of damages; 多点同時測定; 風圧測定; 気流測定

Outdoor measurements at Shiono-misaki wind effect laboratory, wind tunnel experiments and numerical simulations in D.P.R.I.of Kyoto University were carried. The formation of flow pattern around a high-rise buliding model were studied under natural wind. The results are summarized as follows.1.Formation of flow pattern around low-rise and high-rise building models by gusts were analyzed under natural wind new ideas, a curvature of stream path and a pattern formation length. The difference between the characteristics of flow fields around obstacles in a wind tunnel and natural wind.2.Form the results multi-simultaneous measurements of wind pressures on a prism model on a field, it was showed that local severe suctions were caused by two conical vortices on the side faces of the prism model.3.Measurements of strong winds were carried out at Shirahama laboratory in Typhoon 9426. The characteristics of wind over an urban area were simulated with k-epsilon model, and numerical simulations of a turbulent boundary layr were carried out using experimental data.4.From the results of investigations of damages to housing developments in Hiroshima city, the authors presumed strong winds, which flew downward from mountains.

在盐野岬风效应实验室进行了室外测量，在京都大学D.P.R.I.进行了风洞实验和数值模拟。研究了自然风作用下高层建筑模型绕流流态的形成。主要研究结果如下：1.在自然风新概念、流路曲率和流型形成长度的条件下，分析了阵风对低层和高层建筑模型绕流流型形成的影响。风洞中障碍物绕流场特性与自然风的差异; 2.对一个棱柱体模型在一个场地上进行的多点同时风压测量结果表明，棱柱体模型侧面的两个锥形涡引起了局部严重的吸力; 3.对9426号台风在白滨实验室进行了强风测量。用k-S模式模拟了城市上空的风场特征，并利用实验资料对湍流边界层进行了数值模拟。4.根据对广岛市住宅区破坏情况的调查结果，作者推测了从山上向下吹来的强风。

项目成果

清田誠良・桂 順治: "台風9119号によって生じた住宅団地の被害状況について" 第13回風工学シンポジウム論文集. 101-106 (1994)

Seiyoshi Kiyota 和 Junji Katsura：“第 9119 号台风对住宅区造成的损害”第 13 届风工程研讨会论文集 101-106（1994 年）。

丸山敬: "市街地上空における気流性状の数値計算 その1.実際に市街地をケーススタディとした計算手法の検証" 日本建築学会構造系論文集. 474. 49-58 (1996)

Kei Maruyama：“城市地区上方气流特性的数值计算，第 1 部分。使用实际城市地区作为案例研究的计算方法验证”日本建筑学会结构工程学报 474. 49-58 (1996)。

Yasuo Okuda: "Local severe suctions on the side of a prism model on a field" 91CWE,New Delhi,India,. 421-432 (1995)

Yasuo Okuda：“现场棱镜模型侧面的局部严重吸力”91CWE，新德里，印度。

奥田泰雄: "自然風中に置かれた3次元角柱に加わる風圧力(側面上に発生する局所的な負圧)" 第13回風工学シンポジウム論文集. 155-160 (1994)

Yasuo Okuda：“施加在自然风中的三维棱镜上的风压（侧面产生的局部负压）”第13届风工程学会论文集155-160（1994）。

林 泰一: "台風9426号の強風観測-田辺中島高潮観測塔での測定" 京都大学防災研究所年報. 38 (B-1). 79-84 (1995)

Yasuichi Hayashi：“第 9426 号台风的观测 - 田边中岛风暴潮观测塔的测量”京都大学防灾研究所年度报告 38 (B-1) (1995)。