On modal time correlations of turbulent velocity and scalar fields
نویسندگان
چکیده
منابع مشابه
On modal time correlations of turbulent velocity and scalar fields
We consider Eulerian two-point, two-time correlations of a turbulent velocity field and those of a passive scalar mixed by a turbulent velocity field. Integral expressions are derived for the modal time-correlation functions of the velocity and scalar fields using the stretched-spiral vortex model. These expressions are evaluated using asymptotic methods for high wavenumber and, alternatively, ...
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Passive scalar equation is considered in a turbulent homogeneous incompressible Gaussian velocity field. The turbulent nature of the field results in non-smooth coefficients in the equation. A strong, in the stochastic sense, solution of the equation is constructed using the Wiener Chaos, and the properties of the solution are studied. The results apply to both viscous and conservative motions....
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ژورنال
عنوان ژورنال: Journal of Turbulence
سال: 2004
ISSN: 1468-5248
DOI: 10.1088/1468-5248/5/1/035