- Title
- Inertial range similarity for velocity and scalar spectra in a turbulent channel flow
- Creator
- Antonia, R. A.; Abe, H.
- Relation
- 6th International Symposium on Turbulence, Heat and Mass Transfer (THMT '09). Turbulence, Heat and Mass Transfer 6: Proceedings of the Sixth International Symposium on Turbulence, Heat and Mass Transfer (Rome, Italy 14-18 September, 2009) p. 119-122
- Relation
- http://www.thmt-09.org
- Publisher
- Begell House
- Resource Type
- conference paper
- Date
- 2009
- Description
- Velocity and scalar spectra in a turbulent channel flow are examined using DNS databases with passive scalar transport (h⁺=180, 395, 640 and 1020 at Pr=0.71). Particular attention has been given to both kx and kz spectra in the outer region. In contrast to previous findings in the literature, the -5/3 power law does not hold for either velocity or scalar kx spectra over the present h⁺ range. For the kz spectrum, the scaling range slope of the θ spectrum is, however, closer to -5/3 than that of the u spectrum. This behaviour is most likely associated with large-scale spanwise mixing of θ.
- Subject
- velocity spectra; scalar spectra; turbulent channel flow
- Identifier
- uon:8815
- Identifier
- http://hdl.handle.net/1959.13/919265
- Identifier
- ISBN:9781567002621
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