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Leading-Edge Separation Behaviors in SA RANS and SA-Based DDES: Simple Modifications for Improved Prediction
http://hdl.handle.net/10131/00014949
http://hdl.handle.net/10131/00014949a1a91fa1-b555-4988-b0b0-9db195110f69
名前 / ファイル | ライセンス | アクション |
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1-s2.0-S0045793023000397-main.pdf (3.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2023-02-07 | |||||
タイトル | ||||||
タイトル | Leading-Edge Separation Behaviors in SA RANS and SA-Based DDES: Simple Modifications for Improved Prediction | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | DDES, RANS, Spalart-Allmaras, HR-SLAU2, Buffet, Leading-Edge Separation | |||||
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資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
北村, 圭一
× 北村, 圭一× Takagi, Y.× Harada, T.× Yasumura, Y.× Kanamori, M.× Hashimoto, A. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | In this study, delayed detached-eddy simulations (DDESs) based on the Spalart–Allmaras turbulence model are investigated for separation flows. Three simple modifications are considered: the Reynolds-averaged Navier–Stokes (RANS) turbulence model coefficient, Crot, is calibrated to achieve a better leading-edge separation prediction in DDES; the large-eddy simulation (LES) coefficient, CDES, is assessed to obtain better dissipation control in DDES; and dirty-cell treatments in three-dimensional unstructured grids are conducted for a smooth LES/RANS transition. Numerical results confirm the effects of the three aforementioned steps, such as the reproducibility of the measured pressure distribution over the main wing in unsteady turbulence simulations of low-speed buffet around the NASA Common Research Model. Thus, these modifications will potentially serve as good alternatives, without major programming efforts, to the conventional approaches for practitioners. | |||||
書誌情報 |
Computers & Fluids 巻 255, 発行日 2023-02-05 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18790747 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.compfluid.2023.105814 | |||||
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出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
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出版者 | Elsevier | |||||
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識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.compfluid.2023.105814 | |||||
関連名称 | https://doi.org/10.1016/j.compfluid.2023.105814 |