建物周辺気流を対象とした粒子画像流速測定法における解析手法の精度検証

• 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)

• 小林 知広

  大阪市立大学大学院工学研究科都市系専攻　講師・博士(工学)

書誌事項

タイトル別名

• ACCURACY VERIFICATION OF PROCESSING METHODOLOGY IN PARTICLE IMAGE VELOCIMETRY FOR FLOW AROUND BUILDING

抄録

 Particle Image Velocimetry (PIV) is beneficial means to obtain velocity distribution for both fundamental and applied work in architectural-environment research field, because it enables simultaneous measurement without any contact of devices to the flow. There exist a number of factors that can affect result. It is roughly divided into two types, one is image quality, and the other is analysing method. This paper focuses on effect of several processing parameters in PIV on its accuracy, and mainly investigates cross-correlation algorithm, interrogation window size, and the number of iteration in recursive processing. The objective of this work is to understand an impact of each parameter setting for a highly turbulent and shear flow because it has almost never been shown systematically. As analysis target, the flow around a cross-ventilated room model was adopted. By conducting a parametric study combining above-shown parameters, accuracy of analysed velocity and wind direction is finally studied.

収録刊行物

• 日本建築学会環境系論文集

  日本建築学会環境系論文集 80 (715), 741-749, 2015

  日本建築学会

キーワード

• PIV
• 直接相互相関法
• FFT 相互相関法
• 再帰的相関法
• 風洞実験

詳細情報

• CRID: 1390282680178570880
• NII論文ID: 200000407302
• NII論文ID: 130005105027
• NII書誌ID: AA11830377
• DOI: 10.3130/aije.80.741
• ISSN: 1881817X
• ISSN: 13480685
• NDL書誌ID: 026737138
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026737138
• Web Site: https://www.jstage.jst.go.jp/article/aije/80/715/80_741/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可