TY - JOUR
T1 - Geometric features of the mixing of passive scalars at high schmidt numbers
AU - Schumacher, Jörg
AU - Sreenivasan, Katepalli R.
PY - 2003
Y1 - 2003
N2 - The mixing of passive scalars of decreasing diffusivity, advected in each case by the same three-dimensional Navier-Stokes turbulence, is studied. The mixing becomes more isotropic with decreasing diffusivity. The local flow in the vicinity of steepest negative and positive scalar gradients is in general different, and its behavior is studied for various values of the scalar diffusivity. Mixing approaches monofractal properties with diminishing diffusivity. We consider these results in the context of possible singularities of scalar dissipation.
AB - The mixing of passive scalars of decreasing diffusivity, advected in each case by the same three-dimensional Navier-Stokes turbulence, is studied. The mixing becomes more isotropic with decreasing diffusivity. The local flow in the vicinity of steepest negative and positive scalar gradients is in general different, and its behavior is studied for various values of the scalar diffusivity. Mixing approaches monofractal properties with diminishing diffusivity. We consider these results in the context of possible singularities of scalar dissipation.
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U2 - 10.1103/PhysRevLett.91.174501
DO - 10.1103/PhysRevLett.91.174501
M3 - Article
C2 - 14611353
AN - SCOPUS:0348163863
SN - 0031-9007
VL - 91
JO - Physical Review Letters
JF - Physical Review Letters
IS - 17
ER -