Publication Abstracts

Chasnov et al. 1988

Chasnov, J., V.M. Canuto, and R.S. Rogallo, 1988: Turbulence spectrum of a passive temperature field: Results of a numerical simulation. Phys. Fluids, 31, 2065-2067, doi:10.1063/1.867013.

The spectrum of a passive temperature field, G(k), has been determined by a numerical simulation using three kinds of isotropic turbulent velocity fields. For a time independent and Gaussian velocity field, the resulting G(k) has the form G(k) = G0εθε2/3 / χ3k17/3, with G0 = 0.33 ± 0.02 Ko, confirming the prediction of Batchelor, Howells, and Townsend [J. Fluid Mech. 5, 134 (1959)]. For a velocity field developed through the Navier-Stokes equations and the frozen in time, G(k) has the same form as above, but with G0 = 0.39 ± 0.03 Ko. Finally, for a velocity field developed concurrently with the temperature field, G(k) collapses onto the spectrum obtained using a frozen, delevoped velocity field only for high enough values of the conductivity χ. For lower values of χ, the power law behavior of G(k) is less clear.

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BibTeX Citation

@article{ch03200f,
  author={Chasnov, J. and Canuto, V. M. and Rogallo, R. S.},
  title={Turbulence spectrum of a passive temperature field: Results of a numerical simulation},
  year={1988},
  journal={Phys. Fluids},
  volume={31},
  pages={2065--2067},
  doi={10.1063/1.867013},
}

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RIS Citation

TY  - JOUR
ID  - ch03200f
AU  - Chasnov, J.
AU  - Canuto, V. M.
AU  - Rogallo, R. S.
PY  - 1988
TI  - Turbulence spectrum of a passive temperature field: Results of a numerical simulation
JA  - Phys. Fluids
VL  - 31
SP  - 2065
EP  - 2067
DO  - 10.1063/1.867013
ER  -

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