Multi-scale simulation of near-wall turbulent flows

Ayse Gul Gungor; Suresh Menon

doi:10.1007/978-90-481-3652-0_24

Multi-scale simulation of near-wall turbulent flows

Ayse Gul Gungor, Suresh Menon

Georgia Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Citations (Scopus)

Abstract

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.

Original language	English
Title of host publication	Direct and Large-Eddy Simulation VII - Proceedings of the 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008
Editors	Bernard Geurts, Jochen Frohlich, Vincenzo Armenio
Publisher	Springer Netherland
Pages	161-166
Number of pages	6
ISBN (Print)	9789048136513
DOIs	https://doi.org/10.1007/978-90-481-3652-0_24
Publication status	Published - 2010
Externally published	Yes
Event	7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008 - Trieste, Italy Duration: 8 Sept 2008 → 10 Sept 2008

Publication series

Name	ERCOFTAC Series
Volume	13
ISSN (Print)	1382-4309
ISSN (Electronic)	2215-1826

Conference

Conference	7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008
Country/Territory	Italy
City	Trieste
Period	8/09/08 → 10/09/08

Bibliographical note

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

Access to Document

10.1007/978-90-481-3652-0_24

Cite this

Gungor, A. G., & Menon, S. (2010). Multi-scale simulation of near-wall turbulent flows. In B. Geurts, J. Frohlich, & V. Armenio (Eds.), Direct and Large-Eddy Simulation VII - Proceedings of the 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008 (pp. 161-166). (ERCOFTAC Series; Vol. 13). Springer Netherland. https://doi.org/10.1007/978-90-481-3652-0_24

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abstract = "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.",

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Gungor, AG & Menon, S 2010, Multi-scale simulation of near-wall turbulent flows. in B Geurts, J Frohlich & V Armenio (eds), Direct and Large-Eddy Simulation VII - Proceedings of the 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008. ERCOFTAC Series, vol. 13, Springer Netherland, pp. 161-166, 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008, Trieste, Italy, 8/09/08. https://doi.org/10.1007/978-90-481-3652-0_24

Multi-scale simulation of near-wall turbulent flows. / Gungor, Ayse Gul; Menon, Suresh.
Direct and Large-Eddy Simulation VII - Proceedings of the 7th International ERCOFTAC Workshop on Direct and Large-Eddy Simulation, 2008. ed. / Bernard Geurts; Jochen Frohlich; Vincenzo Armenio. Springer Netherland, 2010. p. 161-166 (ERCOFTAC Series; Vol. 13).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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T1 - Multi-scale simulation of near-wall turbulent flows

AU - Gungor, Ayse Gul

AU - Menon, Suresh

N1 - Publisher Copyright: © Springer Science+Business Media B.V. 2010.

PY - 2010

Y1 - 2010

N2 - 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.

AB - 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.

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T3 - ERCOFTAC Series

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Y2 - 8 September 2008 through 10 September 2008

ER -

Multi-scale simulation of near-wall turbulent flows

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