Passive scalar in a large-scale velocity field |
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| Authors: | I Kolokolov V Lebedev M Stepanov |
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| Institution: | (1) Budker Institute of Nuclear Physics, 630090 Novasibirsk, Russia;(2) Novosibirsk State University, 630090 Novosibirsk, Russia;(3) Landau Institute for Theoretical Physics, Russian Academy of Sciences, 117940 Moscow, Russia;(4) Department of Physics of Complex Systems, Weizmann Institute of Science, 76100 Rehovot, Israel;(5) Institute of Automation and Electrometry, Russian Academy of Sciences, 630090 Novasibirsk, Russia;(6) Novosibirsk State University, 630090 Novosibirsk, Russia |
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| Abstract: | We consider advection of a passive scalar θ(t,r) by an incompressible large-scale turbulent flow. In the framework of the Kraichnan model all PDF’s (probability distribution
functions) for the single-point statistics of θ and for the passive scalar difference θ(r
1)−θ(r
2) (for separations r
1−r
2 lying in the convective interval) are found.
Zh. éksp. Teor. Fiz. 115, 920–939 (March 1999)
Published in English in the original Russian journal. Reproduced here with stylistic changes by the Translation Editor. |
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