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Tests of subgrid models in the near-wall region using represented velocity fields

Published online by Cambridge University Press:  20 April 2006

Y. Kaneda  and
D. C. Leslie
Y. Kaneda
Affiliation:
Department of Nuclear Engineering, Queen Mary College, Mile End Road, London E1 4NS Permanent address: Department of Applied Physics, Nagoya University, Nagoya, Japan.
D. C. Leslie
Affiliation:
Department of Nuclear Engineering, Queen Mary College, Mile End Road, London E1 4NS
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Abstract

The 2.5-dimensional model of the turbulent field near a wall, proposed by Hatziavramidis & Hanratty (1979) and modified by Chapman & Kuhn (1981), has been used to test the subgrid models of Schumann (1973, 1975) and Moin & Kim (1982). The results are disquieting, both trends and orders of magnitude sometimes being seriously in error. It also appears that the contribution of the subgrid energy to the pseudopressure calculated in large-eddy simulations can be large, although this contribution is usually neglected. On the positive side, Leonard's model for the Leonard stress is extremely good, and Schumann's synthetic boundary condition is also found to be reliable.

These results must be taken with a grain of salt, since the tests reported in §5 show that the 2.5-dimensional model cannot reproduce important characteristics of the turbulence in the neighbourhood of y+ = 40.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 132 , July 1983 , pp. 349 - 373
Copyright
© 1983 Cambridge University Press

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