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Supersonic Turbulent Boundary Layer: DNS and RANS |
| XU Jing-Lei1;MA Hui-Yang1 |
| Department of Physics, Graduate School of the Chinese Academy of Sciences, PO Box 3908, Beijing 100049 |
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| Cite this article: |
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XU Jing-Lei, MA Hui-Yang 2007 Chin. Phys. Lett. 24 763-766 |
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Abstract We assess the performance of a few turbulence models for Reynolds averaged Navier--Stokes (RANS) simulation of supersonic boundary layers,
compared to the direct numerical simulations (DNS) of supersonic flat-plate turbulent boundary layers, carried out by Gao et al. [Chin. Phys. Lett. 22(2005)1709] and Huang et al. [Sci. Chin.48(2005)614], as well as some available experimental data. The assessment is made for two test cases, with incoming Mach numbers and Reynolds numbers M = 2.25, Re = 365,000/in, and M = 4.5, Re =1.7×107/m, respectively. It is found that in the first case the prediction of RANS models agrees well with the DNS and the experimental data, while for the second case the agreement of the DNS models with
experiment is less satisfactory. The compressibility effect on the RANS models is discussed.
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| Keywords:
47.27.Eq
47.27.Nz
47.40.Ki
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Received: 10 October 2006
Published: 08 February 2007
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