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titleLarge-eddy simulation of transition in wall-bounded flow
Other TitleLarge-eddy simulation of transition in wall-bounded flow
Author(jpn)Schlatter, P.; Stolz, S.; Kleiser, L.
Author(eng)Schlatter, P.; Stolz, S.; Kleiser, L.
Author Affiliation(jpn)KTH Department of Mechanics; Philip Morris Research & Development; Eidgenoessische Technische Hochschule Zurich Institute of Fluid Dynamics
Author Affiliation(eng)Royal Institute of Technology Department of Mechanics; Philip Morris Research & Development; Eidgenoessische Technische Hochschule Zurich Institute of Fluid Dynamics
Issue Date2008-02-29
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication title境界層遷移の解明と制御研究会講演論文集 第40回
Proceedings of the 40th JAXA Workshop on Investigation and Control of Boundary-Layer Transition
Start page13
End page16
Publication date2008-02-29
AbstractLaminar-turbulent transition is a crucial phenomenon appearing in a variety of industrial applications. However the involved physical mechanisms as well as methods for reliable and accurate prediction of transition are still a matter of active research. In the present contribution, we give a brief overview on recent advances in the simulation and prediction of transitional and turbulent wall-bounded shear flows. The focus is on Large-Eddy Simulations (LES), which differ from Direct Numerical Simulations (DNS) by resolving only the large-scale, energy-carrying vortices of the fluid flow, whereas the fine-scale fluid oscillations, assumed to be more homogeneous, are treated by a SubGrid-Scale (SGS) model. The application of LES to flows of technical interest is promising and LES is getting more and more applied to practical problems. The main reason for this is that LES provides an increased accuracy compared to solutions of the (statistical) Reynolds-Averaged Navier-Stokes equations (RANS), while requiring only a fraction of the computational cost of a corresponding fully-resolved DNS. Nevertheless, LES of practical transitional and turbulent flows still require massive computational resources and the use of large-scale computer facilities.
DescriptionJAXA Special Publication
Keywordslarge eddy simulation; laminar-turbulent transition; transition flow; shear flow; boundary layer transition; channel flow; turbulence; Tollmien-Schlichting wave; turbulent flow; hairpin vortice; compressible flow; ラージエディシミュレーション; 層流-乱流遷移; 遷移流; せん断流; 境界層遷移; チャネル流; 乱流場; トルミーン-シュリヒティング波; 乱流; ヘアピン渦; 圧縮性流れ
Document TypeConference Paper
JAXA Category特別資料
Report NoJAXA-SP-07-026E

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