Abstract
Random flows in rotating fluid layers are studied in two spatial
dimensions. The
Eulerian and Lagrangian correlation functions for such flows are analysed
by
approximating the actual two-dimensional flow by an autonomous system consisting
of
many overlapping and mutually convecting vortices. Analytical expressions
for the
full space–time-varying Eulerian velocity correlation are derived
solely
in terms of
flow parameters. An extension of the arguments giving these results also
allows the
derivation of analytical expressions for the Lagrangian velocity
correlation function.
The analytical results are supported by a numerical simulation.
Publisher
Cambridge University Press (CUP)
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics
Cited by
11 articles.
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