流入境界面における乱流統計量の違いがLESによる乱流境界層の計算に及ぼす影響について

• 丸山 敬

  京都大学防災研究所

書誌事項

タイトル別名

• Influence of Turbulence Characteristics on Statistical Quantities at an Inlet Boundary for LES of a Turbulent Boundary Layer
• リュウニュウ キョウカイメン ニ オケル ランリュウ トウケイリョウ ノ チガ

抄録

A method of numerical generation of wind fluctuations was reviewed. According to its procedure a series of inflow wind fluctuations were artificially generated as inlet boundary conditions. Using these signals a turbulent boundary layer at high Reynolds number developed over a rough surface was calculated by Large Eddy Simulation. Numerical simulations were carried out using some inflows which had different characteristics on statistical quantities and the influence of turbulence characteristics were examined. In order to reproduce appropriate mean flow field, the generated and the experimental wind fluctuations should be equivalent in statistical property, i.e. the mean value, the variance and the power spectrum density. The realization of spatially correlated fluctuation of three wind components will lead the simulation to more realistic results.

収録刊行物

• 日本風工学会誌

  日本風工学会誌 1998 (74), 35-45, 1998

  一般社団法人 日本風工学会

詳細情報

• CRID: 1390001204641670400
• NII論文ID: 10002172020
• NII論文ID: 130004013637
• NII論文ID: 10003379666
• NII書誌ID: AN10072785
• DOI: 10.5359/jawe.1998.35
• ISSN: 18838413
• ISSN: 09121935
• HANDLE: 2433/244105
• NDL書誌ID: 4392277
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4392277
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• 抄録ライセンスフラグ: 使用不可