変動場の組織的な構造を評価するための複素POD解析に関する研究 Study on Complex POD Analysis for the Estimation of Coherent Structures

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The estimation of the coherent structures existing in a random phenomenon is important for the study of fluctuating fields, such as the flow fields or the pressure fields around a structure. For the estimation of the coherent structures, Proper Orthogonal Decomposition (POD) is available, which is able to obtain the coherent structures as the principal components of the fluctuating fields. However the components calculated by the POD analysis are stationary modes in space, therefore it is impossible to express the advection phenomenon as a single principal component. In such a case, the complex POD analysis is available. In this paper, the procedure of the complex POD analysis is described. And also the interpretation of it by the use of the complex envelope is shown. The calculations of some model cases are carried out by the POD analysis and the complex POD analysis. By comparing the results, the effectiveness of the complex POD analysis is shown.

収録刊行物

  • 日本風工学会論文集  

    日本風工学会論文集 (109), 123-130, 2006-10-31 

    Japan Association for Wind Engineering

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各種コード

  • NII論文ID(NAID)
    10018290869
  • NII書誌ID(NCID)
    AA11491599
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    1349-3507
  • NDL 記事登録ID
    8580880
  • NDL 雑誌分類
    ZN1(科学技術--建設工学・建設業)
  • NDL 請求記号
    Z16-B243
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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