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A fractal transition in the two dimensional shear layerThe dependence of product generation with the Peclet and Reynolds number in a numerically simulated, reacting, two dimensional, temporally growing mixing layer is used to compute the fractal dimension of passive scalar interfaces. A transition from a low dimension of 4/3 to a higher one of 5/3 is identified and shown to be associated to the kinematic distortion on the flow field during the first pairing interaction. It is suggested that the structures responsible for this transition are non-deterministic, non-random, inhomogeneous fractals. Only the large scales are involved. No further transition is found for Reynolds numbers up to 20,000.
Document ID
19920021421
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jimenez, Javier
(Universidad Politecnica de Madrid)
Martel, Carlos
(Universidad Politecnica de Madrid)
Date Acquired
September 6, 2013
Publication Date
December 1, 1990
Publication Information
Publication: Studying Turbulence Using Numerical Simulation Databases. 3: Proceedings of the 1990 Summer Program
Subject Category
Fluid Mechanics And Heat Transfer
Accession Number
92N30665
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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