| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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A Numerical Study of Temporal Mixing Layer with Three-Dimensional Mortar Spectral Element Method |
| ZHANG Xu1**, LIU Jin-Hong1, Jonathan W. N.2
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1Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621900
2Mechanical Department, University of Wyoming, Laramie, USA
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| Cite this article: |
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ZHANG Xu, LIU Jin-Hong, Jonathan W. N. 2011 Chin. Phys. Lett. 28 064701 |
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Abstract We investigate a set of well-posed interface conditions of viscous fluxes of Navier–Stokes equations, extend them to three-dimensional Navier–Stokes equations and successfully study a temporally turbulent mixing layer. The evolution of a large vortex structure and the non-dimensional statistical quantities in the mixing layer are numerically analyzed. The span-wise energy spectrum of the mixing layer exhibits wide band features, which means that the simulation generates the desired amount of small scales. These results show that too many small scales are present due to insufficient dissipation and the amount of large scales is low, indicating too much dissipation for large-scale structures.
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| Keywords:
47.11.Kb
47.20.Ma
47.27.Er
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Received: 21 September 2010
Published: 29 May 2011
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| PACS: |
47.11.Kb
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(Spectral methods)
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47.20.Ma
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(Interfacial instabilities (e.g., Rayleigh-Taylor))
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47.27.er
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(Spectral methods)
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[1] Brown G L and Roshko A 1974 J. Fluid Mech. 64 775
[2] Liu J X and Luo J S 2010 Chin. Phys. Lett. 27 084701
[3] Zhang X and Stanescu D 2010 Computers and Fluids 39 251
[4] Zhang X and Jonathan W N 2009 Comput. Fluids 38 340
[5] Zhang X and Jonathan W N 2008 Sensors 4 2707
[6] Zhang X and Tan D W 2009 Chin. Phys. Lett. 26 084703
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