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  1. 防災科研関係論文

風力タービン空気力学のラージ・エディ・シミュレーション

https://nied-repo.bosai.go.jp/records/4892
https://nied-repo.bosai.go.jp/records/4892
f8ec8b1d-5752-4a81-83d4-3b8f8bda363c
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 ja
タイトル 風力タービン空気力学のラージ・エディ・シミュレーション
タイトル
言語 en
タイトル Large Eddy Simulation of Wind Turbine Aerodynamics.
言語
言語 jpn
著者 小垣 哲也

× 小垣 哲也

ja 小垣 哲也

en KOGAKI Tetsuya

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木枝 香織

× 木枝 香織

ja 木枝 香織

en KIEDA Kaori

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松宮 輝

× 松宮 輝

ja 松宮 輝

en MATSUMIYA Hikaru

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抄録
内容記述タイプ Other
内容記述 In order to conduct direct numerical simulation (DNS) or large eddy simulation (LES) of turbulent flows with complicated geometry, accurate finite difference methods in generalized curvilinear coordinate system have to be used. In this report, finite difference schemes (FDSs) in generalized curvilinear coordinate system suitable for simulations of incompressible turbulent flow are applied to two types of flows concerned with wind turbine aerodynamics. Although the flow around a circular cylinder is very fundamental flow configuration in many engineering fields, it relates to interference between vortices shed from a tower and rotor blades. Transition eddies shed in phase from the cylinder and the streamwise vortex structure overlapped in spanwise large vortex structure are successfully simulated by the large eddy simulations. The formation of laminar separation bubbles with reverse flow region on airfoil is also successfully reproduced. The mechanism of separation bubbles can be deduced by visualization of flow fields. It was confirmed that the unsteady simulations of turbulent flow, such as large eddy simulations, could be promising tools for wind turbine aerodynamics.
言語 ja
抄録
内容記述タイプ Other
内容記述 In order to conduct direct numerical simulation (DNS) or large eddy simulation (LES) of turbulent flows with complicated geometry, accurate finite difference methods in generalized curvilinear coordinate system have to be used. In this report, finite difference schemes (FDSs) in generalized curvilinear coordinate system suitable for simulations of incompressible turbulent flow are applied to two types of flows concerned with wind turbine aerodynamics. Although the flow around a circular cylinder is very fundamental flow configuration in many engineering fields, it relates to interference between vortices shed from a tower and rotor blades. Transition eddies shed in phase from the cylinder and the streamwise vortex structure overlapped in spanwise large vortex structure are successfully simulated by the large eddy simulations. The formation of laminar separation bubbles with reverse flow region on airfoil is also successfully reproduced. The mechanism of separation bubbles can be deduced by visualization of flow fields. It was confirmed that the unsteady simulations of turbulent flow, such as large eddy simulations, could be promising tools for wind turbine aerodynamics.
言語 en
書誌情報 ja : 風力エネルギー
en : Journal of Japan Wind Energy Association

巻 26, 号 2, p. 63-70, 発行日 2002
出版者
言語 ja
出版者 Japan Wind Energy Association
出版者
言語 en
出版者 Japan Wind Energy Association
ISSN
収録物識別子タイプ ISSN
収録物識別子 0387-6217
DOI
関連識別子 10.11333/jwea1977.26.2_63
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