Multi-scale simulation of near-wall turbulent flows

Ayse Gul Gungor, Suresh Menon

Araştırma sonucu: ???type-name???Konferans katkısıbilirkişi

2 Atıf (Scopus)

Özet

A hybrid two-level large eddy simulation (TLS-LES) is used to study turbulent flow in a converging-diverging channel, which represents a challenging test case due to the appearance of flow separation and subsequent reattachment. While a conventional LES using a localized dynamic subgrid model is employed away from the wall, in the near-wall region a new two-scale approach called the two-level simulation (TLS) approach is employed. A hybrid scale separating operator is used to couple the LES and TLS regimes, and the combined approach that does not contain any ad hoc adjustable parameters is used to simulate high Re wall-bounded flows. The results show that the hybrid TLS-LES approach yields very reasonable predictions of most of the crucial flow features in-spite of using a relatively coarse large-scale grid.

Orijinal dilİngilizce
Ana bilgisayar yayını başlığıDirect and Large-Eddy Simulation VII - Proceedings of the 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008
EditörlerBernard Geurts, Jochen Frohlich, Vincenzo Armenio
YayınlayanSpringer Netherland
Sayfalar161-166
Sayfa sayısı6
ISBN (Basılı)9789048136513
DOI'lar
Yayın durumuYayınlandı - 2010
Harici olarak yayınlandıEvet
Etkinlik7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008 - Trieste, Italy
Süre: 8 Eyl 200810 Eyl 2008

Yayın serisi

AdıERCOFTAC Series
Hacim13
ISSN (Basılı)1382-4309
ISSN (Elektronik)2215-1826

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???event.eventtypes.event.conference???7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008
Ülke/BölgeItaly
ŞehirTrieste
Periyot8/09/0810/09/08

Bibliyografik not

Publisher Copyright:
© Springer Science+Business Media B.V. 2010.

Finansman

The authors are grateful to J.-P. Laval for providing the DNS data. This work is supported by the Office of Naval Research.

FinansörlerFinansör numarası
Office of Naval Research

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