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Article
Influence of Sub-Grid Scale Models for Large Eddy Simulations on the Acoustic Noise Production in Jets
| Authors: |
Semlitsch, B., Mihaescu, M, Fuchs, L.F., Gutmark, E. |
| Document Type: |
Conference |
| Pubstate: |
Published |
| Journal: |
Proc. of 14th European Turbulence Conference (ETC 14), Lyon, France |
| Volume: |
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| Year: |
2013 |
AbstractA high subsonic jet is simulated by solving the compressible Navier-Stokes equations using Large Eddy Simulation. The sub-grid scales (SGS) are handled by using three different approaches, e.g. the Smagorinsky-Lilly model, a dynamic SGS model and an implicit approach. Lighthill’s acoustic analogy indicates that the Reynolds-stress term is a significant term to predict accurately acoustic noise. The obtained turbulent production and dissipation terms are analyzed and compared for all three SGS methods. The obtained statistics are linked with the turbulent acoustic noise production.
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