Publication Abstracts
Chasnov et al. 1989
Chasnov, J.,
, and R.S. Rogallo, 1989: Turbulence spectrum of strongly conductive temperature field in a rapidly stirred fluid. Phys. Fluids A, 1, 1698-1700, doi:10.1063/1.857535.In an earlier paper [Phys. Fluids 31, 2065 (1988)], a numerical simulation of a passive scalar field convected by a frozen velocity field, i.e., a velocity field with an infinite correlation time, was performed. In this paper, a simulation of a passive scalar field convected by a velocity field which is rapidly stirred at all scales of motion, i.e., a velocity field with near zero correlation time, is performed. For an energy spectrum of the form E(k) $propto$ k(-5/3), the temperature spectrum G(k) is found to obey G(k) $propto$ k(-11/3) when conductive effects are dominant. A theoretical model is proposed which obtains the above result by representing the transfer of scalar variance by an eddy conductivity, whose correlation time is limited by the correlation time of the velocity field.
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BibTeX Citation
@article{ch01000b, author={Chasnov, J. and Canuto, V. M. and Rogallo, R. S.}, title={Turbulence spectrum of strongly conductive temperature field in a rapidly stirred fluid}, year={1989}, journal={Physics of Fluids A}, volume={1}, pages={1698--1700}, doi={10.1063/1.857535}, }
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RIS Citation
TY - JOUR ID - ch01000b AU - Chasnov, J. AU - Canuto, V. M. AU - Rogallo, R. S. PY - 1989 TI - Turbulence spectrum of strongly conductive temperature field in a rapidly stirred fluid JA - Phys. Fluids A JO - Physics of Fluids A VL - 1 SP - 1698 EP - 1700 DO - 10.1063/1.857535 ER -
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