The use of Large Eddy Simulation (LES) is increasingly investigated. However, the LES simulations are computationally demanding, due to the transient nature of the flow computations and the required mesh resolution. Furthermore, the subgrid scale model used for modeling the unresolved flow motions is normally a-priori selected. In an unstructured mesh where the mesh resolution can vary significantly, subgrid scale models should be applied carefully. The present study is aimed to investigate the use of an advanced approach to reduce mesh size by means of a Dynamic Grid Adaptation (DGA) algorithm and to apply a LES subgrid scale model based on local mesh size and flow structure. In this work the DGA algorithm is coupled with the LES turbulence model and made an integral part of the turbulence model. Furthermore, this work has integrated two different LES subgrid scale models which are locally applied to the element in a dynamic manner, dependent on mesh size and flow structure.
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ASME 2003 Pressure Vessels and Piping Conference
July 20–24, 2003
Cleveland, Ohio, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4151-0
PROCEEDINGS PAPER
The Use of Advanced LES Subgrid Scale Models in Combination With Dynamic Grid Adaptation Available to Purchase
Govert de With,
Govert de With
University of Hertfordshire, Hatfield, UK
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Arne E. Holdo̸,
Arne E. Holdo̸
University of Hertfordshire, Hatfield, UK
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Nick Peller
Nick Peller
Technische Universita¨t Mu¨nchen, Garching, Germany
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Govert de With
University of Hertfordshire, Hatfield, UK
Arne E. Holdo̸
University of Hertfordshire, Hatfield, UK
Nick Peller
Technische Universita¨t Mu¨nchen, Garching, Germany
Paper No:
PVP2003-1954, pp. 107-114; 8 pages
Published Online:
August 13, 2008
Citation
de With, G, Holdo̸, AE, & Peller, N. "The Use of Advanced LES Subgrid Scale Models in Combination With Dynamic Grid Adaptation." Proceedings of the ASME 2003 Pressure Vessels and Piping Conference. Emerging Technology in Fluids, Structures, and Fluid Structure Interactions. Cleveland, Ohio, USA. July 20–24, 2003. pp. 107-114. ASME. https://doi.org/10.1115/PVP2003-1954
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