Effect of Schmidt number on the velocity–scalar cospectrum in isotropic turbulence with a mean scalar gradient
نویسندگان
چکیده
منابع مشابه
Effect of Schmidt number on the velocity–scalar cospectrum in isotropic turbulence with a mean scalar gradient
We consider transport of a passive scalar by an isotropic turbulent velocity field in the presence of a mean scalar gradient. The velocity–scalar cospectrum measures the distribution of the mean scalar flux across scales. An inequality is shown to bound the magnitude of the cospectrum in terms of the shell-summed energy and scalar spectra. At high Schmidt number, this bound limits the possible ...
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ژورنال
عنوان ژورنال: Journal of Fluid Mechanics
سال: 2005
ISSN: 0022-1120,1469-7645
DOI: 10.1017/s0022112005003903