Abstract
A simple approximation is proposed for the problem of the dispersion of marked particles in an incompressible fluid in random motion when the probability distribution of the velocity field is taken as Gaussian, homogeneous, isotropic, stationary and of zero mean. Approximations for the Lagrangian velocity correlation function and the dispersion are given and compared with exact computer calculations of Kraichnan. Agreement is found to be good except for time-independent velocity fields and singular wavenumber spectral functions.
Publisher
Cambridge University Press (CUP)
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Reference9 articles.
1. Phythian, R. 1969 J. Phys. A2,181–192.
2. Bharucha-Reid, A. T. 1964 Proc. Symp. Appl. Math. 16,40–69.
3. Frenkiel, F. N. & Klebanoff, P. S. 1967a Phys. Fluids,10,507–520.
4. Kraichnan, R. H. 1970a Phys. Fluids,13,22–31.
5. Kraichnan, R. H. 1961 J. Math. Phys. 2,124–148.
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