通風時の建物周辺の圧力場及び風速場に関する風洞実験と数値解析

  • 小林 知広
    立命館大学理工学部建築都市デザイン学科 講師・博士(工学)
  • 甲谷 寿史
    大阪大学大学院工学研究科地球総合工学専攻 准教授・博士(工学)
  • 山中 俊夫
    大阪大学大学院工学研究科地球総合工学専攻 教授・博士(工学)
  • 相良 和伸
    大阪大学大学院工学研究科地球総合工学専攻 教授・工博
  • 桃井 良尚
    大阪大学大学院工学研究科地球総合工学専攻 助教・博士(工学)
  • 浅井 香里
    東京大学大学院工学系研究科建築学専攻 修士課程

書誌事項

タイトル別名
  • WIND TUNNEL TEST AND NUMERICAL SIMULATION FOR PRESSURE AND VELOCITY FIELD AROUND CROSS-VENTILATED BUILDING

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抄録

The objective of this work is to analyse dissipation and transportation of energy inside stream tubes passing through/around a crossventilated building, which is not sufficiently known and is required for an establishment of an improved prediction method of flow rate for wind induced cross-ventilation. This paper focuses on velocity and pressure distribution around a building because it is to be analysed to evaluate the energy loss due to divergence and confluence of the stream tubes. Although this can be done by using CFD, they must also be clarified by measurement in advance to verify the accuracy of CFD afterwards. First, velocity distribution is shown by using Particle Image Velocimetry (PIV). To measure spatial static pressure, a five-hole pitot tube is used. This device can provide three flow quantities simultaneously, i.e., static pressure, velocity magnitude, and wind direction. By comparing results between measurement and CFD conducted in the previous work, this paper finally presents both accuracy of CFD around building model and the scope of each experimental technique.

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