Passive Scalar: Scaling Exponents and Realizability
نویسندگان
چکیده
منابع مشابه
Relating Lagrangian passive scalar scaling exponents to Eulerian scaling exponents in turbulence
Intermittency is a basic feature of fully developed turbulence, for both velocity and passive scalars. Intermittency is classically characterized by Eulerian scaling exponent of structure functions. The same approach can be used in a Lagrangian framework to characterize the temporal intermittency of the velocity and passive scalar concentration of a an element of fluid advected by a turbulent i...
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We establish anomalous inertial range scaling of structure functions for a model of advection of a passive scalar by a random velocity field. The velocity statistics is taken gaussian with decorrelation in time and velocity differences scaling as |x|κ/2 in space, with 0 ≤ κ < 2. The scalar is driven by a gaussian forcing acting on spatial scale L and decorrelated in time. The structure function...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1997
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.78.4922