TY - JOUR
T1 - New results on the fractal and multifractal structure of the large Schmidt number passive scalars in fully turbulent flows
AU - Sreenivasan, K. R.
AU - Prasad, Rahul R.
N1 - Funding Information:
many areas including turbulence. This paper is a modest expression ofour intellectual indebtedness to him. it is a pleasure to dedicate it to Benoit on the occasion of his 65th birthday. The work was financially supported by DARPA (URI) and AFOSR.
PY - 1989/9
Y1 - 1989/9
N2 - By measuring concentration fluctuations of a dye with very fine spatial and temporal resolution in typical unconfined turbulent water flows, we obtain the fractal dimension characteristic of the scalar interface in the range between Kolmogorov and Batchelor scales. We use one-dimensional intersection methods and invoke Taylor's hypothesis, but both of them are amply justified. We obtain a theoretical estimate for the fractal dimension by modifying our earlier arguments for finite (though large) Schmidt number effects. Finally, the multifractal characteristics of the scalar dissipation rate in the same scale range are also presented.
AB - By measuring concentration fluctuations of a dye with very fine spatial and temporal resolution in typical unconfined turbulent water flows, we obtain the fractal dimension characteristic of the scalar interface in the range between Kolmogorov and Batchelor scales. We use one-dimensional intersection methods and invoke Taylor's hypothesis, but both of them are amply justified. We obtain a theoretical estimate for the fractal dimension by modifying our earlier arguments for finite (though large) Schmidt number effects. Finally, the multifractal characteristics of the scalar dissipation rate in the same scale range are also presented.
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U2 - 10.1016/0167-2789(89)90214-5
DO - 10.1016/0167-2789(89)90214-5
M3 - Article
AN - SCOPUS:0024733886
SN - 0167-2789
VL - 38
SP - 322
EP - 329
JO - Physica D: Nonlinear Phenomena
JF - Physica D: Nonlinear Phenomena
IS - 1-3
ER -